大学英语四级

考试类别

大学英语四级大学英语六级大学英语三级专四专八成人英语三级商务英语雅思 GRE

Conversation TwoQuestions 12 to 15 are based on the conversation you have just heard. 答案解析
Conversation TwoQuestions 12 to 15 are based on the conversation you have just heard. 答案解析
Passage TwoQuestions 51 to 55 are based on the following passage.　　You may have heard some of the fashion industry horror stories: models casting tissues or cotton balls to hold off hunger, and models collapsing from hunger-induced heart attacks just seconds after they step off runway.　　Excessively skinny models have been a point of controversy for decades, and two researchers say a model’s body mass should be a workplace health and safety issue. In an editorial released Monday in theAmerican Journal of Public Health, Katherine Record and Bryn Austin made their case for government regulation of the fashion industry.　　The average international runway model has a body mass index (BMI) under 16—low enough to indicate starvation by the World Health Organization’s standard. And Record and Austin are worried not just about the models themselves, but about the vast number of girls and women their images influence.　　“Especially girls and teens,” says Record. “Seventy percent of girls aged 10 to 18 report that they define perfect body image based on what they see in magazines.” That’s especially worrying, she says, given thatanorexia(厌食症) results in more deaths than does any other mental illness, according to the National institute of Mental Health.　　It’s commonly known that certain diseases are linked with occupations like lung disease in coal miners. Professional fashion models are particularly vulnerable to eating disorders resulting from occupational demands to maintain extreme thinness.　　Record’s suggestion is to prohibit agents from hiring models with a BMI below 18.　　In April, France passed a law setting lower limits for a model’s weight. Agents and fashion houses who hire models with a BMI under 18 could pay $82,000 in fines and spend up to 6 months in jail. Regulating the fashion industry in the United States won’t be easy, Record says. But with the new rules in France, U.S. support could make a difference. “A designer can’t survive without participating in Paris Fashion Week”, she says, adding, “Our argument is that the same would be true of New York Fashion Week.” 答案解析
Section CDirections:There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter onAnswer Sheet 2with a single line through the centre.Passage OneQuestions 46 to 50 are based on the following passage.　　“Sugar, alcohol and tobacco,” economist Adam Smith once wrote, “are commodities which are nowhere necessaries of life, which have become objects of almost universal consumption, and which are, therefore, extremely popular subjects of taxation.”　　Two and a half centuries on, most countries impose some sort of tax on alcohol and tobacco. With surging obesity levels putting increasing strain on public health systems, governments around the world have begun to toy with the idea of taxing sugar as well.　　Whether such taxes work is a matter of debate. A preliminary review of Mexico’s taxation found a fall in purchases of taxed drinks as well as a rise in sales of untaxed and healthier drinks. By contrast, a Danish tax on foods high in fats was abandoned a year after its introduction, amid claims that consumers were avoiding it by crossing the border to Germany to satisfy their desire for cheaper, fattier fare.　　The food industry has, in general, been firmly opposed to such direct government action. Nonetheless, the renewed focus on waistlines means that industry groups are under pressure to demonstrate their products are healthy as well as tasty.　　Over the past three decades, the industry has made some efforts to improve the quality of its offerings. For example, some drink manufacturers have cut the amount of sugar in their beverages.　　Many of the reductions over the past 30 years have been achieved either by reducing the amount of sugar, salt or fat in a product, or by finding an alternative ingredient. More recently, however, some companies have been investing money in a more ambitious undertaking: learning how to adjust the fundamental make-up of the food they sell. For example, having salt on the outside, but none on the inside, reduces the salt content without changing the taste.　　While reformulatingrecipes(配方) is one way to improve public health, it should be part of a multi-sided approach. The key is to remember that there is not just one solution. To deal with obesity, a mixture of approaches—including reformulation, taxation and adjusting portion sizes—will be needed. There is no silver bullet. 答案解析
三、Part Ⅲ　Reading Comprehension　(40 minutes)Section ADirections:In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item onAnswer Sheet 2with a single line through the centre. You may not use any of the words in the bank more than once.　　The ocean is heating up. That’s the conclusion of a new study that finds that Earth’s oceans now　26　heat at twice the rate they did 18 years ago. Around half of ocean heat intake since 1865 has taken place since 1997, researchers report online inNature Climate Change.　　Warming waters are known to　27　tocoral bleaching(珊瑚白化) and they take up more space than cooler waters, raising sea　28　. While the top of the ocean is well studied, its depths are more difficult to　29　. The researchers gathered 150 years of ocean temperature data in order to get a better　30　of heat absorption from surface to seabed. They gathered together temperature readings collected by everything from a 19th century　31　of British naval ships to modern automated ocean probes. The extensive data sources,　32　withcomputer simulations(计算机模拟), created a timeline of ocean temperature changes, including cooling from volcanic outbreaks and warming from fossil fuel　33　.　　About 35 percent of the heat taken in by the oceans during the industrial era now resides at a　34　of more than 700 meters, the researchers found. They say they’re　35　whether the deep-sea warming canceled out warming at the sea’s surface.A) absorbB) combinedC) contributeD) depthE) emissionsF) excursionG) exploreH) floorI) heightsJ) indifferentK) levelsL) mixedM) pictureN) unsure0) voyage 答案解析
Section BDirections:In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter onAnswer Sheet 2.The Secret to Raising Smart Kids [A] I first began to investigate the basis of human motivation—and how people persevere after setbacks—as a psychology graduate student at Yale University in the 1960s. Animal experiments by psychologists at the University of Pennsylvania had shown that after repeated failures, most animals conclude that a situation is hopeless and beyond their control. After such an experience an animal often remains passive even when it can effect change—a state they called learned helplessness.　　[B] People can learn to be helpless, too. Why do some students give up when they encounter difficulty, whereas others who are no more skilled continue to strive and learn? One answer, I soon discovered, lay in people’s beliefs about why they had failed.　　[C] In particular, attributing poor performance to a lack of ability depresses motivation more than does the belief that lack of effort is to blame. When I told a group of school children who displayed helpless behavior that a lack of effort led to their mistakes in math, they learned to keep trying when the problems got tough. Another group of helpless children who were simply rewarded for their success on easier problems did not improve their ability to solve hard math problems. These experiments indicated that a focus on effort can help resolve helplessness and generate success.　　[D] Later, I developed a broader theory of what separates the two general classes of learners—helpless versus mastery-oriented. I realized these different types of students not only explain their failures differently, but they also hold different “theories” of intelligence. The helpless ones believe intelligence is a fixed characteristic: you have only a certain amount, and that’s that. I call this a “fixedmind-set(思维模式).” Mistakes crack their self-confidence because they attribute errors to a lack of ability, which they feel powerless to change. They avoid challenges because challenges make mistakes more likely. The mastery-oriented children, on the other hand, think intelligence is not fixed and can be developed through education and hard work. Such children believe challenges are energizing rather thanintimidating(令人生畏); they offer opportunities to learn. Students with such a growth mind-set weredestined(注定) for greater academic success and were quite likely to outperform their counterparts.　　[E] We validated these expectations in a study in which two other psychologists and I monitored 373 students for two years during the transition to junior high school, when the work gets more difficult and the grading more strict, to determine how their mind-sets might affect their math grades. At the beginning of seventh grade, we assessed the students’ mind-sets by asking them to agree or disagree with statements such as “Your intelligence is something very basic about you that you can’t really change.” We then assessed their beliefs about other aspects of learning and looked to see what happened to their grades.　　[F] As predicted, the students with a growth mind-set felt that learning was a more important goal than getting good grades. In addition, they held hard work in high regard. They understood that even geniuses have to work hard. Confronted by a setback such as a disappointing test grade, students with a growth mind-set said they would study harder or try a different strategy. The students who held a fixed mind-set, however, were concerned about looking smart with less regard for learning. They had negative views of effort, believing that having to work hard was a sign of low ability. They thought that a person with talent or intelligence did not need to work hard to do well. Attributing a bad grade to their own lack of ability, those with a fixed mind-set said that they would study less in the future, try never to take that subject again and consider cheating on future tests.　　[G] Such different outlooks had a dramatic impact on performance. At the start of junior high, the math achievement test scores of the students with a growth mind-set were comparable to those of students who displayed a fixed mind-set. But as the work became more difficult, the students with a growth mind-set showed greater persistence. As a result, their math grades overtook those of the other students by the end of the first semester—and the gap between the two groups continued to widen during the two years we followed them.　　[H] A fixed mind-set can also hinder communication and progress in the workplace and discourage or ignore constructive criticism and advice. Research shows that managers who have a fixed mind-set are less likely to seek or welcome feedback from their employees than are managers with a growth mind-set.　　[I] How do we transmit a growth mind-set to our children? One way is by telling stories about achievements that result from hard work. For instance, talking about mathematical geniuses who were more or less born that way puts students in a fixed mind-set, but descriptions of growth mathematicians who fell in love with math and developed amazing skills produce a growth mind-set.　　[J] In addition, parents and teachers can help children by providing explicit instruction regarding the mind as a learning machine. I designed an eight-session workshop for 91 students whose math grades were declining in their first year of junior high. Forty-eight of the students received instruction in study skills only, whereas the others attended a combination of study skills sessions and classes in which they learned about the growth mind-set and how to apply it to schoolwork. In the growth mind-set classes, students read and discussed an article entitled “You Can Grow Your Brain.” They were taught that the brain is like a muscle that gets stronger with use and that learning prompts the brain to grow new connections. From such instruction, many students began to see themselves as agents of their own brain development. Despite being unaware that there were two types of instruction, teachers reported significant motivational changes in 27% of the children in the growth mind-set workshop as compared with only 9% of students in the control group.　　[K] Research isconverging(汇聚) on the conclusion that great accomplishment and even genius is typically the result of years of passion and dedication and not something that flows naturally from a gift. 答案解析
Section BDirections:In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter onAnswer Sheet 2.The Secret to Raising Smart Kids [A] I first began to investigate the basis of human motivation—and how people persevere after setbacks—as a psychology graduate student at Yale University in the 1960s. Animal experiments by psychologists at the University of Pennsylvania had shown that after repeated failures, most animals conclude that a situation is hopeless and beyond their control. After such an experience an animal often remains passive even when it can effect change—a state they called learned helplessness.　　[B] People can learn to be helpless, too. Why do some students give up when they encounter difficulty, whereas others who are no more skilled continue to strive and learn? One answer, I soon discovered, lay in people’s beliefs about why they had failed.　　[C] In particular, attributing poor performance to a lack of ability depresses motivation more than does the belief that lack of effort is to blame. When I told a group of school children who displayed helpless behavior that a lack of effort led to their mistakes in math, they learned to keep trying when the problems got tough. Another group of helpless children who were simply rewarded for their success on easier problems did not improve their ability to solve hard math problems. These experiments indicated that a focus on effort can help resolve helplessness and generate success.　　[D] Later, I developed a broader theory of what separates the two general classes of learners—helpless versus mastery-oriented. I realized these different types of students not only explain their failures differently, but they also hold different “theories” of intelligence. The helpless ones believe intelligence is a fixed characteristic: you have only a certain amount, and that’s that. I call this a “fixedmind-set(思维模式).” Mistakes crack their self-confidence because they attribute errors to a lack of ability, which they feel powerless to change. They avoid challenges because challenges make mistakes more likely. The mastery-oriented children, on the other hand, think intelligence is not fixed and can be developed through education and hard work. Such children believe challenges are energizing rather thanintimidating(令人生畏); they offer opportunities to learn. Students with such a growth mind-set weredestined(注定) for greater academic success and were quite likely to outperform their counterparts.　　[E] We validated these expectations in a study in which two other psychologists and I monitored 373 students for two years during the transition to junior high school, when the work gets more difficult and the grading more strict, to determine how their mind-sets might affect their math grades. At the beginning of seventh grade, we assessed the students’ mind-sets by asking them to agree or disagree with statements such as “Your intelligence is something very basic about you that you can’t really change.” We then assessed their beliefs about other aspects of learning and looked to see what happened to their grades.　　[F] As predicted, the students with a growth mind-set felt that learning was a more important goal than getting good grades. In addition, they held hard work in high regard. They understood that even geniuses have to work hard. Confronted by a setback such as a disappointing test grade, students with a growth mind-set said they would study harder or try a different strategy. The students who held a fixed mind-set, however, were concerned about looking smart with less regard for learning. They had negative views of effort, believing that having to work hard was a sign of low ability. They thought that a person with talent or intelligence did not need to work hard to do well. Attributing a bad grade to their own lack of ability, those with a fixed mind-set said that they would study less in the future, try never to take that subject again and consider cheating on future tests.　　[G] Such different outlooks had a dramatic impact on performance. At the start of junior high, the math achievement test scores of the students with a growth mind-set were comparable to those of students who displayed a fixed mind-set. But as the work became more difficult, the students with a growth mind-set showed greater persistence. As a result, their math grades overtook those of the other students by the end of the first semester—and the gap between the two groups continued to widen during the two years we followed them.　　[H] A fixed mind-set can also hinder communication and progress in the workplace and discourage or ignore constructive criticism and advice. Research shows that managers who have a fixed mind-set are less likely to seek or welcome feedback from their employees than are managers with a growth mind-set.　　[I] How do we transmit a growth mind-set to our children? One way is by telling stories about achievements that result from hard work. For instance, talking about mathematical geniuses who were more or less born that way puts students in a fixed mind-set, but descriptions of growth mathematicians who fell in love with math and developed amazing skills produce a growth mind-set.　　[J] In addition, parents and teachers can help children by providing explicit instruction regarding the mind as a learning machine. I designed an eight-session workshop for 91 students whose math grades were declining in their first year of junior high. Forty-eight of the students received instruction in study skills only, whereas the others attended a combination of study skills sessions and classes in which they learned about the growth mind-set and how to apply it to schoolwork. In the growth mind-set classes, students read and discussed an article entitled “You Can Grow Your Brain.” They were taught that the brain is like a muscle that gets stronger with use and that learning prompts the brain to grow new connections. From such instruction, many students began to see themselves as agents of their own brain development. Despite being unaware that there were two types of instruction, teachers reported significant motivational changes in 27% of the children in the growth mind-set workshop as compared with only 9% of students in the control group.　　[K] Research isconverging(汇聚) on the conclusion that great accomplishment and even genius is typically the result of years of passion and dedication and not something that flows naturally from a gift. 答案解析
Section BDirections:In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter onAnswer Sheet 2. Can Burglars Jam Your Wireless Security System?　　[A] Any product that promises to protect your home deserves careful examination. So it isn’t surprising that you’ll find plenty of strong opinions about the potential vulnerabilities of popular home-security systems.　　[B] The most likely type of burglary (入室盗窃) by far is the unsophisticated crime of opportunity, usually involving a broken window or some forced entry. According to the FBI, crimes like these accounted for roughly two-thirds of all household burglaries in the US in 2013.The wide majority of the rest were illegal, unforced entries that resulted from something like a window being left open. The odds of a criminal using technical means to bypass a security system are so small that the FBI doesn’t even track those statistics.　　[C] One of the main theoretical home-security concerns is whether or not a given system is vulnerable to being blocked from working altogether. With wired setups, the fear is that a burglar (入室盗贼) might be able to shut your system down simply by cutting the right cable. With a wireless setup, you stick battery-powered sensors up around your home that keep an eye on windows, doors, motion, and more. If they detect something wrong while the system is armed, they’ll transmit a wireless alert signal to a base station that will then raise the alarm. That approach will eliminate most cord-cutting concerns—but what about their wireless equivalent, jamming? With the right device tuned to the right frequency, what’s to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?　　[D] Jamming concerns are nothing new, and they’re not unique to security systems. Any device that’s built to receive a wireless signal at a specific frequency can be overwhelmed by a stronger signal coming in on the same frequency. For comparison, let’s say you wanted to “jam” a conversation between two people—all you’d need to do is yell in the listener’s ear.　　[E] Security devices are required to list the frequencies they broadcast on—that means that a potential thief can find what they need to know with minimal Googling. They will, however, need to know what system they’re looking for. If you have a sign in your yard declaring what setup you use, that’d point them in the right direction, though at that point, we’re talking about a highly targeted, semi-sophisticated attack, and not the sort of forced-entry attack that makes up the majority of burglaries. It’s easier to find and acquire jamming equipment for some frequencies than it is for others.　　[F] Wireless security providers will often take steps to help combat the threat of jamming attacks. SimpliSafe, winner of our Editor’s Choice distinction, utilizes a special system that’s capable of separating incidental RF interference from targeted jamming attacks. When the system thinks it’s being jammed, it’ll notify you via push alert (推送警报).From there, it’s up to you to sound the alarm manually.　　[G] SimpliSafe was singled out in one recent article on jamming, complete with a video showing the entire system being effectively bypassed with handheld jamming equipment. After taking appropriate measures to contain the RF interference to our test lab, we tested the attack out for ourselves, and were able to verify that it’s possible with the right equipment. However, we also verified that SimpliSafe’s anti-jamming system works. It caught us in the act, sent an alert to my smartphone, and also listed our RF interference on the system’s event log. The team behind the article and video in question make no mention of the system, or whether or not it detected them.　　[H] We like the unique nature of that software. It means that a thief likely wouldn’t be able to Google how the system works, then figure out a way around it. Even if they could, SimpliSafe claims that its system is always evolving, and that it varies slightly from system to system, which means there wouldn’t be a universal magic formula for cracking it. Other systems also seem confident on the subject of jamming. The team at Frontpoint addresses the issue in a blog on its site, citing their own jam protection software and claiming that there aren’t any documented cases of successful jam attack since the company began offering wireless security sensors in the 1980s.　　[I] Jamming attacks are absolutely possible. As said before, with the right equipment and the right know-how, it’s possible to jam any wireless transmission. But how probable is it that someone will successfully jam their way into your home and steal your stuff?　　[J] Let’s imagine that you live in a small home with a wireless security setup that offers a functional anti-jamming system. First, a thief is going to need to target your home, specifically. Then, he’s going to need to know the technical details of your system and acquire the specific equipment necessary for jamming your specific setup. Presumably, you keep your doors locked at night and while you’re away, so the thief will still need to break in. That means defeating the lock somehow, or breaking a window. He’ll need to be jamming you at this point, as a broken window or opened door would normally release the alarm. So, too, would the motion detectors in your home, so the thief will need to continue jamming once he’s inside and searching for things to steal. However, he’ll need to do so without tripping the anti-jamming system, the details of which he almost certainly does not have access to.　　[K] At the end of the day, these kinds of systems are primarily designed to protect against the sort of opportunistic smash-and-grab attack that makes up the majority of burglaries. They’re also only a single layer in what should ideally be a many-sided approach to securing your home, one that includes common sense things like sound locks and proper exterior lighting at night. No system is impenetrable, and none can promise to eliminate the worst case completely. Every one of them has vulnerabilities that a knowledgeable thief could theoretically exploit. A good system is one that keeps that worst-case setting as improbable as possible while also offering strong protection in the event of a less-extraordinary attack. 答案解析
Section BDirections:In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter onAnswer Sheet 2. Can Burglars Jam Your Wireless Security System?　　[A] Any product that promises to protect your home deserves careful examination. So it isn’t surprising that you’ll find plenty of strong opinions about the potential vulnerabilities of popular home-security systems.　　[B] The most likely type of burglary (入室盗窃) by far is the unsophisticated crime of opportunity, usually involving a broken window or some forced entry. According to the FBI, crimes like these accounted for roughly two-thirds of all household burglaries in the US in 2013.The wide majority of the rest were illegal, unforced entries that resulted from something like a window being left open. The odds of a criminal using technical means to bypass a security system are so small that the FBI doesn’t even track those statistics.　　[C] One of the main theoretical home-security concerns is whether or not a given system is vulnerable to being blocked from working altogether. With wired setups, the fear is that a burglar (入室盗贼) might be able to shut your system down simply by cutting the right cable. With a wireless setup, you stick battery-powered sensors up around your home that keep an eye on windows, doors, motion, and more. If they detect something wrong while the system is armed, they’ll transmit a wireless alert signal to a base station that will then raise the alarm. That approach will eliminate most cord-cutting concerns—but what about their wireless equivalent, jamming? With the right device tuned to the right frequency, what’s to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?　　[D] Jamming concerns are nothing new, and they’re not unique to security systems. Any device that’s built to receive a wireless signal at a specific frequency can be overwhelmed by a stronger signal coming in on the same frequency. For comparison, let’s say you wanted to “jam” a conversation between two people—all you’d need to do is yell in the listener’s ear.　　[E] Security devices are required to list the frequencies they broadcast on—that means that a potential thief can find what they need to know with minimal Googling. They will, however, need to know what system they’re looking for. If you have a sign in your yard declaring what setup you use, that’d point them in the right direction, though at that point, we’re talking about a highly targeted, semi-sophisticated attack, and not the sort of forced-entry attack that makes up the majority of burglaries. It’s easier to find and acquire jamming equipment for some frequencies than it is for others.　　[F] Wireless security providers will often take steps to help combat the threat of jamming attacks. SimpliSafe, winner of our Editor’s Choice distinction, utilizes a special system that’s capable of separating incidental RF interference from targeted jamming attacks. When the system thinks it’s being jammed, it’ll notify you via push alert (推送警报).From there, it’s up to you to sound the alarm manually.　　[G] SimpliSafe was singled out in one recent article on jamming, complete with a video showing the entire system being effectively bypassed with handheld jamming equipment. After taking appropriate measures to contain the RF interference to our test lab, we tested the attack out for ourselves, and were able to verify that it’s possible with the right equipment. However, we also verified that SimpliSafe’s anti-jamming system works. It caught us in the act, sent an alert to my smartphone, and also listed our RF interference on the system’s event log. The team behind the article and video in question make no mention of the system, or whether or not it detected them.　　[H] We like the unique nature of that software. It means that a thief likely wouldn’t be able to Google how the system works, then figure out a way around it. Even if they could, SimpliSafe claims that its system is always evolving, and that it varies slightly from system to system, which means there wouldn’t be a universal magic formula for cracking it. Other systems also seem confident on the subject of jamming. The team at Frontpoint addresses the issue in a blog on its site, citing their own jam protection software and claiming that there aren’t any documented cases of successful jam attack since the company began offering wireless security sensors in the 1980s.　　[I] Jamming attacks are absolutely possible. As said before, with the right equipment and the right know-how, it’s possible to jam any wireless transmission. But how probable is it that someone will successfully jam their way into your home and steal your stuff?　　[J] Let’s imagine that you live in a small home with a wireless security setup that offers a functional anti-jamming system. First, a thief is going to need to target your home, specifically. Then, he’s going to need to know the technical details of your system and acquire the specific equipment necessary for jamming your specific setup. Presumably, you keep your doors locked at night and while you’re away, so the thief will still need to break in. That means defeating the lock somehow, or breaking a window. He’ll need to be jamming you at this point, as a broken window or opened door would normally release the alarm. So, too, would the motion detectors in your home, so the thief will need to continue jamming once he’s inside and searching for things to steal. However, he’ll need to do so without tripping the anti-jamming system, the details of which he almost certainly does not have access to.　　[K] At the end of the day, these kinds of systems are primarily designed to protect against the sort of opportunistic smash-and-grab attack that makes up the majority of burglaries. They’re also only a single layer in what should ideally be a many-sided approach to securing your home, one that includes common sense things like sound locks and proper exterior lighting at night. No system is impenetrable, and none can promise to eliminate the worst case completely. Every one of them has vulnerabilities that a knowledgeable thief could theoretically exploit. A good system is one that keeps that worst-case setting as improbable as possible while also offering strong protection in the event of a less-extraordinary attack. 答案解析
Section ADirections:In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item onAnswer Sheet 2with a single line through the centre. You may not use any of the words in the bank more than once.　　 Many men and women have long bought into the idea that there are “male” and “female” brains, believing that explains just about every difference between the sexes. A new study　26　that belief, questioning whether brains really can be distinguished by gender.　　In the study, Tel Aviv University researchers　27　for sex differences throughout the entire human brain.　　And what did they find? Not much. Rather than offer evidence fo　28　brains as “male” or “female,” research shows that brains fall into a wide range, with most people falling right in the middle.　　Daphna Joel, who led the study, said her research found that while there are some gender-based　29　, many different types of brain can’t always be distinguished by gender.　　While the “average” male and “average” female brains were　30　different, you couldn’t tell it by looking at individual brain scans. Only a small　31　of people had “all-male” or “all-female” characteristics.　　Larry Cahill, an Americanneuroscientist(神经科学家), said the study is an important addition to a growing body of research questioning　32　beliefs about gender and brain function. But he cautioned against concluding from this study that all brains are the same,　33　of gender.　　“There’s a mountain of evidence　34　the importance of sex influences at all levels of brain function,” he toldThe Seattle Times.　　If anything, he said, the study　35　that gender plays a very important role in the brain—“even when we are not clear exactly how.”A) abnormalB) appliedC) brieflyD) categorizingE) challengesF) figureG) percentageH) provingI) regardlessJ) searchedK) similaritie!L) slightlyM) suggestsN) tastes0) traditional 答案解析
下列不属于影响利率期货价格的经济因素的是( )。答案解析
Section CDirections:There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter onAnswer Sheet 2with a single line through the centre.Passage oneQuestions 46 to 50 are based on the following passage.　　 As Artificial Intelligence (AI) becomes increasingly sophisticated, there are growing concerns that robots could become a threat. This danger can be avoided, according to computer science professor Stuart Russell, if we figure out how to turn human values into a programmable code.　　Russell argues that as robots take on more complicated tasks, it’s necessary to translate our morals into AI language.　　For example, if a robot does chores around the house, you wouldn’t want it to put the pet cat in the oven to make dinner for the hungry children. “You would want that robot preloaded with a good set of values,” said Russell.　　Some robots are already programmed with basic human values. For example, mobile robots have been programmed to keep a comfortable distance from humans. Obviously there are cultural differences, but if you were talking to another person and they came up close in your personal space, you wouldn’t think that’s the kind of thing a properly brought-up person would do.　　It will be possible to create more sophisticated moral machines, if only we can find a way to set out human values as clear rules.　　Robots could also learn values from drawing patterns from large sets of data on human behavior. They are dangerous only if programmers are careless.　　The biggest concern with robots going against human values is that human beings fail to do sufficient testing and they’ve produced a system that will break some kind oftaboo(禁忌).　　One simple check would be to program a robot to check the correct course of action with a human when presented with an unusual situation.　　If the robot is unsure whether an animal is suitable for the microwave, it has the opportunity to stop, send outbeeps(嘟嘟声), and ask for directions from a human. If we humans aren’t quite sure about a decision, we go and ask somebody else.　　The most difficult step in programming values will be deciding exactly what we believe in moral, and how to create a set of ethical rules. But if we come up with an answer, robots could be good for humanity. 答案解析
Section BDirections:In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter onAnswer Sheet 2.Finding the Right Home—and Contentment, Too　　 [A] When your elderly relative needs to enter some sort of long-term care facility—a moment few parents or children approach without fear—what you would like is to have everything made clear.　　[B] Does assisted living really mark a great improvement over a nursing home, or has the industry simply hired better interior designers? Are nursing homes as bad as people fear, or is that an out-modedstereotype(固定看法)? Can doing one’s homework really steer families to the best places? It is genuinely hard to know.　　[C] I am about to make things more complicated by suggesting that what kind of facility an older person lives in may matter less than we have assumed. And that the characteristics adult children look for when they begin the search are not necessarily the things that make a difference to the people who are going to move in. I am not talking about the quality of care, let me hastily add. Nobody flourishes in a gloomy environment with irresponsible staff and a poor safety record. But an accumulating body of research indicates that some distinctions between one type of elder care and another have little real bearing on how well residents do.　　[D] The most recent of these studies, published inThe journal of Applied Gerontology, surveyed 150 Connecticut residents of assisted living, nursing homes and smaller residential care homes (known in some states as board and care homes or adult care homes). Researchers from the University of Connecticut Health Center asked the residents a large number of questions about their quality of life, emotional well-being and social interaction, as well as about the quality of the facilities.　　[E] “We thought we would see differences based on the housing types,” said the lead author of the study, Julie Robison, an associate professor of medicine at the university. A reasonable assumption—don’t families struggle to avoid nursing homes and suffer real guilt if they can’t?　　[F] In the initial results, assisted living residents did paint the most positive picture. They were less likely to report symptoms of depression than those in the other facilities, for instance, and less likely to be bored or lonely. They scored higher on social interaction.　　[G] But when the researchers plugged in a number of other variables, such differences disappeared. It is not the housing type, they found, that creates differences in residents’ responses. “It is the characteristics of the specific environment they are in, combined with their own personal characteristics—how healthy they feel they are, their age and marital status,” Dr. Robison explained. Whether residents felt involved in the decision to move and how long they had lived there also proved significant.　　[H] An elderly person who describes herself as in poor health, therefore, might be no less depressed in assisted living (even if her children preferred it) than in a nursing home. A person who had input into where he would move and has had time to adapt to it might do as well in a nursing home as in a small residential care home, other factors being equal. It is an interaction between the person and the place, not the sort of place in itself, that leads to better or worse experiences. “You can’t just say, ‘Let’s put this person in a residential care home instead of a nursing home—she will be much better off,’” Dr. Robison said. What matters, she added, “is a combination of what people bring in with them, and what they find there.”　　[I] Such findings, which run counter to common sense, have surfaced before. In a multi-state study of assisted living, for instance, University of North Carolina researchers found that a host of variables—the facility’s type, size or age; whether a chain owned it; how attractive the neighborhood was—had no significant relationship to how the residents fared in terms of illness, mental decline, hospitalizations or mortality. What mattered most was the residents’ physical health and mental status. What people were like when they came in had greater consequence than what happened once they were there.　　[J] As I was considering all this, a press release from a respected research firm crossed my desk, announcing that the five-star rating system that Medicare developed in 2008 to help families compare nursing home quality also has little relationship to how satisfied its residents or their family members are. As a matter of fact, consumers expressed higher satisfaction with the one-star facilities; the lowest rated, than with the five-star ones.(More on this study and the star ratings will appear in a subsequent post.)　　[K] Before we collectively tear our hair out—how are we supposed to find our way in a landscape this confusing?—here is a thought from Dr. Philip Sloane, ageriatrician(老年病学专家) at the University of North Carolina: “In a way that could be liberating for families.”　　[L] Of course, sons and daughters want to visit the facilities, talk to the administrators and residents and other families, and do everything possible to fulfill their duties. But perhaps they don’t have to turn themselves into private investigators or Congressional subcommittees. “Families can look a bit more for where the residents are going to be happy,” Dr. Sloane said. And involving the future resident in the process can be very important.　　[M] We all have our own ideas about what would bring our parents happiness. They have their ideas, too. A friend recently took her mother to visit an expensive assisted living/nursing home near my town. I have seen this place—it is elegant, inside and out. But nobody greeted the daughter and mother when they arrived, though the visit had been planned；nobody introduced them to the other residents. When they had lunch in the dining room, they sat alone at a table.　　[N] The daughter feared her mother would be ignored there, and so she decided to move her into a more welcoming facility. Based on what is emerging from some of this research, that might have been as rational a way as any to reach a decision. 答案解析
Section BDirections:In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter onAnswer Sheet 2.Finding the Right Home—and Contentment, Too　　 [A] When your elderly relative needs to enter some sort of long-term care facility—a moment few parents or children approach without fear—what you would like is to have everything made clear.　　[B] Does assisted living really mark a great improvement over a nursing home, or has the industry simply hired better interior designers? Are nursing homes as bad as people fear, or is that an out-modedstereotype(固定看法)? Can doing one’s homework really steer families to the best places? It is genuinely hard to know.　　[C] I am about to make things more complicated by suggesting that what kind of facility an older person lives in may matter less than we have assumed. And that the characteristics adult children look for when they begin the search are not necessarily the things that make a difference to the people who are going to move in. I am not talking about the quality of care, let me hastily add. Nobody flourishes in a gloomy environment with irresponsible staff and a poor safety record. But an accumulating body of research indicates that some distinctions between one type of elder care and another have little real bearing on how well residents do.　　[D] The most recent of these studies, published inThe journal of Applied Gerontology, surveyed 150 Connecticut residents of assisted living, nursing homes and smaller residential care homes (known in some states as board and care homes or adult care homes). Researchers from the University of Connecticut Health Center asked the residents a large number of questions about their quality of life, emotional well-being and social interaction, as well as about the quality of the facilities.　　[E] “We thought we would see differences based on the housing types,” said the lead author of the study, Julie Robison, an associate professor of medicine at the university. A reasonable assumption—don’t families struggle to avoid nursing homes and suffer real guilt if they can’t?　　[F] In the initial results, assisted living residents did paint the most positive picture. They were less likely to report symptoms of depression than those in the other facilities, for instance, and less likely to be bored or lonely. They scored higher on social interaction.　　[G] But when the researchers plugged in a number of other variables, such differences disappeared. It is not the housing type, they found, that creates differences in residents’ responses. “It is the characteristics of the specific environment they are in, combined with their own personal characteristics—how healthy they feel they are, their age and marital status,” Dr. Robison explained. Whether residents felt involved in the decision to move and how long they had lived there also proved significant.　　[H] An elderly person who describes herself as in poor health, therefore, might be no less depressed in assisted living (even if her children preferred it) than in a nursing home. A person who had input into where he would move and has had time to adapt to it might do as well in a nursing home as in a small residential care home, other factors being equal. It is an interaction between the person and the place, not the sort of place in itself, that leads to better or worse experiences. “You can’t just say, ‘Let’s put this person in a residential care home instead of a nursing home—she will be much better off,’” Dr. Robison said. What matters, she added, “is a combination of what people bring in with them, and what they find there.”　　[I] Such findings, which run counter to common sense, have surfaced before. In a multi-state study of assisted living, for instance, University of North Carolina researchers found that a host of variables—the facility’s type, size or age; whether a chain owned it; how attractive the neighborhood was—had no significant relationship to how the residents fared in terms of illness, mental decline, hospitalizations or mortality. What mattered most was the residents’ physical health and mental status. What people were like when they came in had greater consequence than what happened once they were there.　　[J] As I was considering all this, a press release from a respected research firm crossed my desk, announcing that the five-star rating system that Medicare developed in 2008 to help families compare nursing home quality also has little relationship to how satisfied its residents or their family members are. As a matter of fact, consumers expressed higher satisfaction with the one-star facilities; the lowest rated, than with the five-star ones.(More on this study and the star ratings will appear in a subsequent post.)　　[K] Before we collectively tear our hair out—how are we supposed to find our way in a landscape this confusing?—here is a thought from Dr. Philip Sloane, ageriatrician(老年病学专家) at the University of North Carolina: “In a way that could be liberating for families.”　　[L] Of course, sons and daughters want to visit the facilities, talk to the administrators and residents and other families, and do everything possible to fulfill their duties. But perhaps they don’t have to turn themselves into private investigators or Congressional subcommittees. “Families can look a bit more for where the residents are going to be happy,” Dr. Sloane said. And involving the future resident in the process can be very important.　　[M] We all have our own ideas about what would bring our parents happiness. They have their ideas, too. A friend recently took her mother to visit an expensive assisted living/nursing home near my town. I have seen this place—it is elegant, inside and out. But nobody greeted the daughter and mother when they arrived, though the visit had been planned；nobody introduced them to the other residents. When they had lunch in the dining room, they sat alone at a table.　　[N] The daughter feared her mother would be ignored there, and so she decided to move her into a more welcoming facility. Based on what is emerging from some of this research, that might have been as rational a way as any to reach a decision. 答案解析
Section CDirections:In this section, you will hear three passages. At the end of each passage, you will hear three or four questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A),B),C)and D).Then mark the corresponding letter onAnswer Sheet 1with a single line through the centre.Questions 16 to 18 are based on the passage you have just heard. 答案解析
Section CDirections:In this section, you will hear three passages. At the end of each passage, you will hear three or four questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A),B),C)and D).Then mark the corresponding letter onAnswer Sheet 1with a single line through the centre.Questions 16 to 18 are based on the passage you have just heard. 答案解析
Section BDirections:In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter onAnswer Sheet 1with a single line through the centre.Questions 8 to 11 are based on the conversation you have just heard. 答案解析
Section BDirections:In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter onAnswer Sheet 1with a single line through the centre.Questions 8 to 11 are based on the conversation you have just heard. 答案解析
Drections:Questions5to7arebasedonthenewsreportyouhavejustheard. 答案解析
Drections:Questions5to7arebasedonthenewsreportyouhavejustheard. 答案解析