违法和不良信息举报
联系客服
网站首页
医卫类
计算机类
公务员
技能鉴定
财会类
学历类
职业资格
外语类
当前位置:
首页
>
外语类
>
大学英语四级
> 问题列表
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
波浪理论其创始人是美国人查尔斯·亨利()。
答案解析
20世纪最著名的投资专家之一,有威廉·江恩(WillianD.Gann)在股票和商品期货市场的投资业绩骄人,平均成功率曾经高达()
答案解析
10月20日,某投资者以97.300的价格买入10手12月份到期的欧洲美元期货合约,当期货价格变为97.800时全部平仓。该投资者的交易盈亏为( )。(不计手续费等交易费用)
答案解析
Drections:Questions5to7arebasedonthenewsreportyouhavejustheard.
答案解析
Drections:Questions5to7arebasedonthenewsreportyouhavejustheard.
答案解析
Drections:Questions22to25arebasedonthepassageyouhavejustheard.
答案解析
Drections:Questions22to25arebasedonthepassageyouhavejustheard.
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. Declining mental function is often seen as a problem of old age, but certain aspects of brain function actually begin their decline in young adulthood, a new study suggests. The study, which followed more than 2,000 healthy adults between the ages of 18 and 60, found that certain mental functions—including measures of abstract reasoning, mental speed and puzzle-solving—started to dull as early as age 27. Dips in memory, meanwhile, generally became apparent around age 37. On the other hand, indicators of a person’s accumulated knowledge—like performance on tests of vocabulary and general knowledge—kept improving with age, according to findings published in the journalNeurobiology of Aging. The results do not mean that young adults need to start worrying about their memories. Most people’s minds function at a high level even in their later years, according to researcher Timothy Salthouse. “These patterns suggest that some types of mental flexibility decrease relatively early in adulthood, but that the amount of knowledge one has, and the effectiveness of integrating it with one’s abilities, may increase throughout all of adulthood if there are no diseases,” Salthouse said in a news release. The study included healthy, educated adults who took standard tests of memory, reasoning and perception at the outset and at some point over the next seven years. The tests are designed to detectsubtle(细微的)changes in mental function, and involve solving puzzles, recalling words and details from stories, and identifying patterns in collections of letters and symbols. In general, Salthouse and his colleagues found, certain aspects of cognition (认知能力)generally started to decline in the late 20s to 30s. The findings shed light on normal age-related changes in mental function, which could aid in understanding the process ofdementia(痴呆), according to the researchers. “By following individuals over time,” Salthouse said, “we gain insight in cognition changes, and may possibly discover ways to slow the rate of decline.” The researchers are currently analyzing the study participants’ health and lifestyle to see which factors might influence age-related cognitive changes
答案解析
Questions 5 to 7 are based on the news report you have just heard.
答案解析
Questions 5 to 7 are based on the news report you have just heard.
答案解析
Passage TwoQuestions 51 to 55 are based on the following passage. The most important thing in the news last week was the rising discussion in Nashville about the educational needs of children. Theshorthand(简写)educators use for this is “pre-K”—meaning instruction before kindergarten—and the big idea is to prepare 4-year-olds and even younger kids to be ready to succeed on their K-12 journey. But it gets complicated. The concept has multiple forms, and scholars and policymakers argue about the shape, scope and cost of the ideal program. The federal Head Start program, launched 50 years ago, has served more than 30 million children. It was based on concepts developed at Vanderbilt University’s Peabody College by Susan Gray, the legendary pioneer in early childhood education research. A new Peabody study of the Tennessee Voluntary Pre-K program reports that pre-K works, but the gains are not sustained through the third grade. It seems to me this highlights quality issues in elementary schools more than pre-K, and indicates longer-term success must connect pre-K with all the other issues, related to educating a child. Pre-K is controversial. Some critics say it is a luxury and shouldn’t be free to families able to pay. Pre-K advocates insist it is proven and will succeed if integrated with the rest of the child’s schooling. I lean toward the latter view. This is, in any case, the right conversation to be having now as Mayor Megan Barry takes office. She was the first candidate to speak out for strong pre-K programming. The important thing is for all of us to keep in mind the real goal and the longer, bigger picture. The weight of the evidence is on the side of pre-K that earlyintervention(干预) works. What government has not yet found is the political will to put that understanding into full practice with a sequence of smart schooling that provides the early foundation. For this purpose, our schools need both the talent and the organization to educate each child who arrives at the schoolhouse door. Some show up ready, but many do not at this critical time when young brains are developing rapidly.
答案解析
5月15日,某交易所8月份黄金期货合约的价格为399.5美元/盎司,10月份黄金期货合约的价格为401美元/盎司。某交易者此时入市,买入一份8月份黄金期货合约,同时卖出一份10月份黄金期货合约。在不考虑其他因素影响的情况下,下列选择中该交易者亏损的是( )。
答案解析
某金矿公司预计3个月后将出售黄金,故先卖出黄金期货,价格为298美元,出售黄金时的市价为308美元,同时以311美元回补黄金期货,其有效黄金售价为( )。
答案解析
Passage TwoQuestions 51 to 55 are based on the following passage. Inagrarian(农业的) , pre-industrial Europe, “you’d want to wake up early, start working with the sunrise, have a break to have the largest meal, and then you’d go back to work,” says Ken Albala, a professor of history at the University of the Pacific. “Later, at 5 or 6, you’d have a smaller supper.” This comfortable cycle, in which the rhythms of the day helped shape the rhythms of the meals, gave rise to the custom of the large midday meal, eaten with the extended family. “Meals are the foundation of the family,” says Carole Counihan, a professor at Millersville University in Pennsylvania, “so there was a very important interconnection between eating together” and strength-eating family ties. Since industrialization, maintaining such a slow cultural metabolism has been much harder, with the long midday meal shrinking to whatever could be stuffed into a lunch bucket or bought at a food stand. Certainly, there were benefits. Modern techniques for producing and shipping food led to greater variety and quantity, including a tremendous increase in the amount of animal protein and dairy products available, making us more vigorous than our ancestors. Yet plenty has been lost too, even in cultures that still live to eat. Take Italy. It’s no secret that the Mediterranean diet is healthy, but it was also a joy to prepare and eat. Italians, says Counihan, traditionally began the day with a small meal. The big meal came at around 1 p.m. In between the midday meal and a late, smaller dinner came a small snack. Today, when time zones have less and less meaning, there is little tolerance for offices’ closing for lunch, and worsening traffic in cities means workers can’t make it home and back fast enough anyway. So the formerly small supper after sundown becomes the big meal of the day, the only one at which the family has a chance to get together. “The evening meal carries the full burden that used to be spread over two meals,” says Counihan.
答案解析
某铝型材厂决定利用铝期货进行买入套期保值。3月5日该厂在7月份到期的铝期货合约上建仓,成交价格为20600元/吨。此时铝锭的现货价格为20400元/吨。至6月5日,期货价格涨至21500元/吨,现货价格也上涨至21200元/吨。该厂按此现货价格购进铝锭,同时将期货合约对冲平仓。通过套期保值操作,该厂实际采购铝锭的成本是( )元/吨。
答案解析
Questions 12 to 15 are based on the conversation you have just heard.
答案解析
交易编码由12位数字构成,前()位为会员号,后()位为客户号。
答案解析
三、Part Ⅲ Reading Comprehension (40 minutes)Section A The method for making beer has changed over time. Hops, for example, which give many a modern beer its bitter flavor, are a _____(1)recent addition to the beverage. This was mentioned in reference to brewing in the ninth century. Now, researchers have found a _____(2)ingredient in residue(残留物) from 5000-year-old beer brewing equipment. While excavating two pits at a site in the central plains of China, scientists discovered fragments from pots, funnels, amphorae, and stoves (stove fragment pictured). The different shapes of the containers _____(3)they were used to brew, filter, and store beer.They may be ancient “beer-making toolkits,” and the earliest _____(4)evidence of beer brewing in China, the researchers report online today in the Proceedings of the National Academy of Sciences. To _____(5)that hypothesis, the team examined the yellowish, dried _____(6)inside the vessels. The majority of the grains, about 80%, were from cereal crops like millet and barley(大麦), and about 10% were bits of roots, _____(7)likely, would have made the beer sweeter, the scientists say. Barley was an unexpected find: The crop was domesticated in western Eurasia and didn’t become a _____(8)food in central China until about 2000 years ago, according to the researchers. Based on that timing, they suggest barley may have _____(9)in the region not as food, but as_____(10)material for beer brewing beer. A.Arrived B.consuming C.direct D.exclusively E.including F.infrom G.raw H.reached I.relatively J.remains K.resources L.staple M.surprising N.suggest O.Test
答案解析
三、Part Ⅲ Reading Comprehension (40 minutes)Section A The method for making beer has changed over time. Hops, for example, which give many a modern beer its bitter flavor, are a _____(1)recent addition to the beverage. This was mentioned in reference to brewing in the ninth century. Now, researchers have found a _____(2)ingredient in residue(残留物) from 5000-year-old beer brewing equipment. While excavating two pits at a site in the central plains of China, scientists discovered fragments from pots, funnels, amphorae, and stoves (stove fragment pictured). The different shapes of the containers _____(3)they were used to brew, filter, and store beer.They may be ancient “beer-making toolkits,” and the earliest _____(4)evidence of beer brewing in China, the researchers report online today in the Proceedings of the National Academy of Sciences. To _____(5)that hypothesis, the team examined the yellowish, dried _____(6)inside the vessels. The majority of the grains, about 80%, were from cereal crops like millet and barley(大麦), and about 10% were bits of roots, _____(7)likely, would have made the beer sweeter, the scientists say. Barley was an unexpected find: The crop was domesticated in western Eurasia and didn’t become a _____(8)food in central China until about 2000 years ago, according to the researchers. Based on that timing, they suggest barley may have _____(9)in the region not as food, but as_____(10)material for beer brewing beer. A.Arrived B.consuming C.direct D.exclusively E.including F.infrom G.raw H.reached I.relatively J.remains K.resources L.staple M.surprising N.suggest O.Test
答案解析
Passage TwoQuestions 52 to 56 are based on the following passage. "One of the reason I find this topic very interesting is because my mom was a smoker when I was younger," say Lindson-Hawly, who studies tobacco and health at the University of Oxford. By studying about 700 adult smoker, she found out that her mom quit the right way-by stopping abruptly and completely. In her study, participants were randomly(随机地)assigned to two groups. One had to quit abruptly on a given day, going from about a pack a day to zero. The other cut down gradually over the course of two weeks. People in both groups used nicotine(尼古丁)patches before they quit, in addition to a second form of nicotine replacement, like gum or spray. They also had talk therapy with a nurse before and after quit day. Six months out, more people who had quit abruptly had stuck with it-more than one-fifth of them, compared to about one-seventh in the other group. Although these numbers appear low, it is much higher than if people try without support. And the quit rates were particularly convincing given that before the study started, most of the people had said they'd rather cut down gradually before quitting. "If you're training for a marathon, you wouldn't expect to turn up and just be able to run it. And I think people see that for smoking as well. They think, 'Well, if I gradually reduce, it's like practice.' "says Lindsons-Hawley. But that wasn't the case. Instead of giving people practice, the gradual reduction likely gave them cravings(瘾)and withdrawal symptoms before they even reached quit day, which could be why fewer people in that group actually made it to that point. "Regardless of your stated preference, if you're ready to quit, quitting abruptly is more effective,” says Dr. Gabrieia Ferreira, "When you can quote a specific number like a fifith of the patients were able to quit, that's compelling. It gives them the encouragement, I think, to really go for it,” Ferreira says. People rarely manage to quit the first time they try. But at least, she says, they can maximize the odds of success.
答案解析
17 / 19
首页
上一页
下一页
尾页
相关内容