当前位置: 首页 > 外语类 > 大学英语四级 > 问题详情
问题 - 多项选择题

导致经常项目出现逆差的表现有()。

A:经济增长率高

B:国民收入增加

C:国内需求水平提高

D:进口增加

查看参考答案
可能感兴趣的试题

    As high school students flock to social networking sites, campus police are scanningtheir Facebook and MySpace pages for tips to help break up fights, monitor gangs andprevent crime.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Some students object to police looking over their shoulders. But officers responsiblefor school safety say routine checks of the online forums often add to the knowledge theyobtain from hallways or schoolyards.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    In recent years, school administrators have blamed some campus fights on Internetconflicts and urged parents to keep watch on their children's computer activity. But studentswho use the Web to let their 500 closest friends know what they are doing at all times aresometimes surprised that police are watching, too.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Police don't have special privileges on Facebook or MySpace. Students who want to gounobserved can change privacy settings so that their profiles are displayed only to a list ofapproved people. But the default (默认) settings leave those profiles open to many Internetusers (in the case of Facebook) or all of them (in the case of MySpace).
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Employers and college admissions counselors have examined online profiles of studentapplicants for some time. Police across the country have been doing the same for the pasttwo or three years, said Kevin Quinn, a spokesman for the Minnesota-based National
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/Association of School Resource Officers.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    "If you're already familiar with the technology, it doesn't take you but a couple ofminutes to hook into the student population and keep an eye on things," Quinn said.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    An expedition into a thicket (丛林) of MySpace profiles found high school studentsdiscussing drugs, sex and fights. It was all publicly available (although in language thatcaused a reporter to blush).
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Late last month, Fairfax County police announced the arrests of seven Chantilly areateenagers for trying to recruit Franklin Middle School students to a gang. That investigationwas aided when a student showed the school resource officer gang symbols littering one ofthe suspect's Myspace profiles.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Fairfax police say they pride themselves on addressing issues in schools before theydevelop into major problems. Keeping an eye on Facebook and MySpace has become anextra tool in that effort, they said.

1.[单选题]Police officers scan social networking sites like Facebook or MySpace because ___________.

A.they have some special privileges to do so

B.they may detect gang-fighting through the Net

C.it is easier to solve students' conflicts online

D.it is their duty to protect students' privacy

2.[单选题]How did Fairfax County police identify the teenagers as gang members?

A.By investigating the students recruited.

B.By sending a policeman to spy on the gang.

C.By watching the spot they meet regularly.

D.By checking their self-descriptions online.

3.[单选题]What does "looking over their shoulders" (Line 1, Para.2) means in the passage?

A.Limit their time spending online.

B.Blame them for the conflicts.

C.Monitor what they said online.

D.Make schoolyard checking a routine.

4.[单选题]What does the author mainly discuss in the passage?

A.Students' neglect of protecting their privacy online.

B.Internet helping police maintain school and public order.

C.Social networking sites having bad influence on teenagers.

D.Police's unwelcome interference in students' online activities.

5.[单选题]Police can have access to many students' online profiles due to ___________.

A.students' casual attitude to private information

B.the technical support offered by the websites

C.the approval given by the students themselves

D.the special right granted by the governrnent

查看参考答案

1.[单选题]What is the author’s main concern?

A.How to render automobiles pollution-free.

B.How to make smaller and safer automobiles.

C.How to solve the problem of traffic jams.

D.How to develop an automated subway system.

2.[单选题]What is the author’s attitude toward the future of autos?

A.Enthusiastic.

B.Pessimistic.

C.Optimistic.

D.Cautious.

3.[单选题]In an automated highway system, all the driver needs to do is ________.

A.keep in the right lane

B.wait to arrive at his destination

C.keep in constant touch with the computer center

D.inform the system of his destination by phone

4.[单选题]One significant improvement in the future car will probably be ________.

A.its power source

B.its driving system

C.its monitoring system

D.its seating capacity

5.[单选题]What provides autos with electric power in an automated highway system?

A.A rail.

B.An engine.

C. A retractable arm.

D.A computer controller.

查看参考答案

组织分析包括组织外部环境和内部机制分析,下列叙述中不属于组织内部机制分析的是( )。

A了解组织结构和管理风格

B评估技术资源和系统的效用

C识别法人权限和使命

D识别和评估组织和服务对象的关系

查看参考答案

    Most of us are neither pilots nor astronauts. We are not trained to steer large hulks of steel and gasoline while manipulating small computers. So there’s something blindingly obvious about the risks of texting while driving. Yet research is beginning to show that driving while simply talking on a cell phone—including using hands-free technology--can prove dangerous,even deadly. 
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    In late July,the Center for Auto Safety released hundreds of pages of a study that identified the cell phone as a serious safety hazard when used on the road. And though it’s impossible to accurately calculate how many car accidents nationwide are cell phone related, David Strayer, a psychology professor at the University of Utah,estimates that only 2%of people are able to safely multitask while driving. 
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Strayer, who for more than a decade has been studying the effects driving and cell-phone use have on the brain,says those 296 are probably the same people who would be really good fighter pilots. Rarities. Some of Strayer's other findings show that most drivers tend to stare straight ahead while using a cell phone and are less influenced by peripheral vision(周边视觉). In other words,“cell phones,”he says,“make you blind to your own bad driving. 
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    And even though the common assumption is that hands—free technology has reduced the more dangerous side effects of cell-phone use,a series of tests conducted by Strayer seems to indicate the opposite. A passenger acted as another set of eyes for the driver in the test and even stopped or started talking depending on the difficulty of conditions outside the car. Meanwhile,half the drivers talking on a hands-free phone failed bypassing(绕过)the rest area the test had called for them to stop at. 
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Part of the problem may be that when people direct their attention to sound,the visual capacity of their brain decreases,says Steven Yantis,a professor of psychological and brain sciences at Johns Hopkins University. It can be as if a driver is seeing the image in her head of the person she is talking to,there by decreasing her ability to see what’s actually in front of her. 

1.[单选题]In Strayer's tests, the drivers were required to __________.

A.stop at a certain rest area

B.by pass a certain rest area

C.be aware of the dangerous side effects of cell-phone use

D.stop talking to the passenger under difficult conditions

2.[单选题]According to David Strayer, a good fighter pilot must be good at __________.

A.driving fast ears safely

B.doing many tasks at the same time

C.steering huge machines

D.identifying risks of the surroundings

3.[单选题] As it is mentioned in the passage,the drivers talking on the cell phone tend to __________.

A.be blind to the things straight ahead

B.be aware of their bad driving habits

C.ignore the items on both sides

D.be influenced by peripheral vision

4.[单选题]The passage is intended for emphasizing the safety issue on __________.

A.working on computers

B.traveling in space

C.using a cell phone

D.driving a ear

5.[单选题]Steven Yantis is most likely to agree that __________.

A.sound can weaken people’s eye sight

B.sound call distract people from vision

C.sound is necessary for the formation of visual image

D.sound is incompatible with visual ability of the brain.

查看参考答案

style=text-align: justify; style=text-align: justify; style=text-align: justify;

1.[单选题]What is the author"s attitude toward the environmental effects of pesticides?

A.Pessimistic

B.Indifferent

C.Defensive

D.Concerned

2.[单选题] People tend to ignore the delayed effects of exposure to chemical because _____.

A.limited exposure to them does little harm to people’s health

B.the present is more important for them than the future

C.the danger does not become apparent immediately

D.humans are capable of withstanding small amounts of poisoning

3.[单选题]Which of the following is closest in meaning to the sentence "Man…is part of nature" (Para. 1, Lines 3-4)?

A.Man appears indifferent to what happens in nature.

B.Man acts as if he does not belong to nature.

C.Man can avoid the effects of environmental pollution.

D.Man can escape his responsibilities for environmental effects of pesticides?

4.[单选题] It can be concluded from Dr. Dubos remarks that _____.

A.people find invisible diseases difficult to deal with

B.attacks by hidden enemies tend to be fatal

C.diseases with obvious signs are easy to cure

D.people tend to overlook hidden dangers caused by pesticides

5.[单选题]In the author"s view, the sudden death caused by exposure to large amounts of pesticides _____.

A.is not the worst of the negative consequences resulting from the use of pesticides

B.now occurs most frequently among all accidental deaths

C.has sharply increased so as to become the center of public attention

D. is unavoidable because people can"t do without pesticides in farming

查看参考答案

当移动平均线从上升转为水平且向下运动,价位从移动平均线一上方向下突破,回升时若无力穿透移动平均线,是最佳买入时机。()

A对

B错

查看参考答案
  • 39.8

    ¥80 每天只需1.3元
    1个月 推荐
  • 49.8

    ¥100
    3个月
  • 99.8

    ¥200
    1年

选择支付方式

  • 微信付款
  • 支付宝付款
郑重提醒:支付后,系统自动为您完成注册

请使用微信扫码支付(元)

订单号:
支付后,系统自动为您完成注册
遇到问题请联系在线客服

常用手机号:
用于找回密码
图片验证码:
看不清?点击更换
短信验证码:
新密码:
 
绑定后可用手机号登录
请不要关闭本页面,支付完成后请点击【支付完成】按钮
遇到问题请联系在线客服