搜题请搜索小程序“爱下问搜题”
问题 选择题

如图所示，是一质点作直线运动的v-t图象，下列说法中不正确的是（　　）

A．整个过程中，CD段和DE段的加速度数值最大

B．整个过程中，BC段的加速度数值最大

C．整个过程中，D点所表示的状态离出发点最远

D．BC段所表示的运动通过的路程是34m

答案

A、B整个过程中，CD段和DE段倾斜角最大，故其加速度数值最大，故A正确；B错误．

C、从静止到D点的图象与坐标轴围成的面积在时间轴的上方，位移为正，D点以后位移为负，说明此时已经反方向运动了，故D点所表示的状态离出发点最远，故C正确；

D、BC段与时间轴围成的梯形面积为S=

1
2
×（5+12）×4m=34m，故D正确．

本题选错误的，故选B．

阅读理解

High school students need “cool” jobs in summer holidays. Working at popular retail chains(零售连锁店) and ice-cream shops are good choices. The U.S. Department of Labor(美国劳工部) says that about two-thirds of the teenager workers are in fast food business. 1/5 of cooks and food workers are between 16 and 19 years old and 2/5 of food workers are part-time workers.

If you think taking a part-time job is easier, you are wrong. For young people, whatever you do, do your jobs well. Because a good work record will be useful for higher-paid jobs in the future. Let’s share my story.

Unless with my family members, I would go to eat fast food. That doesn’t mean I don’t like working in a fast food restaurant. My first part-time job, at age 16, was at the McDonald’s in Bloomington, Indiana. It was very hard work. Especially on Indiana University football weekends, we had no time to rest, but we still had a lot of fun. Finally I got a higher-paid job.

A future manager believes that difficult work encourages success. The growing U.S. population will bring more restaurants. While many people can’t deal with the pressure(压力) to fill orders quickly, the people who really do a great job will get plenty of rewards in the workplace.

小题1:According to the U.S. Department of Labor, ______.

A．more than half of teenager workers are in fast food business

B．teenagers in America like to work in a fast food restaurant

C．teenagers like to take a part-time job in summer holidays

D．almost all teenagers are interested in fast food小题2:The author uses his own story mainly to tell us that ______.

A．he never liked fast food and would never eat it

B．he didn’t like working in a fast food restaurant at all

C．he did a great job, which enabled him to find a better one

D．he never went to the fast food restaurant with his family小题3:The underlined phrase “A future manager” in Paragraph 4 means the person who ______.

A．will become a manager in the future

B．wants to be a manager in the future

C．doesn’t like his job at present

D．worries about his future小题4:From the last paragraph, we can learn that ______.

A．a manager will do less work and get more money

B．not all the people are suitable for the job in fast food business

C．a hardworking waiter has few chances to be a manager

D．the growing U.S. population can bring higher-paid jobs
查看答案
阅读理解

What image does the word “Britain” conjure up（令人想到）in your mind? Big Ben，the frequently changing weather, fish and chips… But have you ever wondered what British people think means “Britain”?

English playwright William Shakespeare and pop group The Beatles are the icons which inspire a sense of national pride in British people, according to a recent survey.

More than 2,000 people were asked what aspect of Britain made them feel most proud. Shakespeare topped the list, followed by the National Trust, a charity which protects places of historical or environmental interest. These beat the British currency, the pound, and the BBC.

Surprisingly, the royal family only made it to seventh on the list. “The royal family, while popular, does not inspire widespread pride,” said a spokesman for Demos, the think tank(智囊团) which carried out the research. “However, it is certainly the case that — through their unique capacity to hold and lead national events — the royal family has a central role to play in developing pride.”

Terence Blacker, a reporter for The Independent, believes the study shows the nature of new patriotism（爱国主义）． “It turns out that modern British patriotism is not really about nationhood at all,” he wrote.

According to the poll, the most impressive symbols of national pride concerned private conduct and character. Volunteering topped the list, followed by politeness and patience.

小题1: According to the passage, the following statements are British most outstanding symbols except   .

A．patriotism.

B．the Beatles.

C．politeness.

D．Shakespeare.小题2:Which of the following is close to the right order of the top symbols of Britain?

A．a ,b, c, d

B．a, d, c, b

C．c, a, b, d

D．a, c, b, d小题3:The royal family does not top the list because   .

A．the royal family has a central role to play in developing pride

B．the royal family owns a lot of wealth.

C．the royal family does not attract the public attention.

D．the royal family does not influence the public as much as it used to.小题4:It can be inferred that     can make Chinese feel most proud.

A．volunteering.

B．education.

C．Luxun.

D．Population.
查看答案