问题 选择题

两辆汽车在平直公路上运动,乙车内的人看到甲车没动,而甲车内的人看到树向西移动,若以地面为参考系,上述观察说明(   )

A.甲车不动,乙车向东运动

B.乙车不动,甲车向东运动

C.甲、乙两车以相同速度向东运动

D.甲车向东,乙车向西运动

答案

答案:C

题目分析:地面和树木是相对静止的,所以甲车是向东运动的,而乙车上的人看到甲车没动,说明两车是相对静止的,都是向东运动,故选C,

点评:本题的突破口是从甲车相对地面的运动着手的,然后再利用甲乙两车相对静止,从而能判断出乙车的运动方向

阅读理解

It is pretty much a one-way street.While it may“be common for university researchers to try their luck in the commercial world,there is very little traffic in the opposite direction.Pay has always been the biggest deterrent,as people with families often feel they cannot afford the drop in salary when moving to a university job.For some industrial scientists,however, the attractions of academia(学术界)outweigh any financial considerations.

Helen Lee took a 70%cut in salary when she moved from a senior post in Abbott Laboratories to a medical department at the University of Cambridge.Her main reason for returning to academia halfway was to take advantage of the greater freedom to choose research questions.Some areas of research have few chances of a commercial return,and Lee’s is one of them.

The powerful effect of a salary cut is probably less severe for a scientist in the early stages of an occupation.Guy Grant,now a research associate at the Unilever Centre for Molecular Informatics at the University of Cambridge,spent two years working for a medicine company before returning to university as a post-doctoral researcher.He took a 30%salary cut but felt it worthwhile for the greater intellectual opportunities.

Higher up the ladder,where a pay cut is usually more significant,the demand for scientists with a wealth of experience in industry is forcing universities to make the transition(转换)to academia more attractive,according to Lee.Industrial scientists tend to receive training that academics do not,such as how to build a multidisciplinary team,manage budgets and negotiate contracts(合同).They are also well placed to bring something extra to the teaching side of an academic role that will help students get a job when they graduate,says Lee,perhaps experience in manufacturing practice or product development.“Only a small number of undergraduates will continue in an academic occupation.So someone leaving university who already has the skills needed to work in an industrial lab has far more potential in the job market than someone who has spent a11 their time on a narrow research project.”

小题1:The underlined word“deterrent”in Paragraph 1 most probably refers to something that

A.helps to move the traffic

B.attracts people’s attention

C.keeps someone from taking action

D.brings someone a financtal burden小题2:What was Helen Lee’s major consideration when she changed her j ob halfway?

A.Flexible work hours.

B.Her research interests.

C.Chances of academic accomplishments

D.Her preference for the lifestyle at university小题3:Why did Guy Grant choose to work as a researcher at Cambridge?

A.To do financially more rewarding work.

B.To raise his status in the academic world.

C.To enjoy better intellectual opportunities.

D.To gain more experience in medical research.小题4:What contribution can industrial scientists make when they come to teach in a university?

A.Suit its research to practical applications.

B.Develop its students’potential in research.

C.Help it obtain financial support from industry.

D.Increase its graduates’competitiveness in the j ob market.

单项选择题