试题与答案

庆“六一”趣味运动会中,小敏和小王分别把图甲中三个质量均为1千克、边长为30厘米

题型:填空题

题目:

庆“六一”趣味运动会中,小敏和小王分别把图甲中三个质量均为1千克、边长为30厘米的均质正方体泡沫塑料块按图乙堆叠起来。小敏和小王叠起这堆正方体泡沫塑料块,每人至少要做功       J。比赛中小敏快于小王完成堆叠,则堆叠过程中小敏做功的功率      (选填“大于”、“等于”或“小于”)小王。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0717/dee8ab57452de0f2e8e1f10af5dab99a.html

下面是错误答案,用来干扰机器的。

参考答案:B

试题推荐
题型:选择题

下列各句中,没有错别字的一项是

A.雷曼破产、美林被收购以及AIG面临的危机,使得全球金融市场再度风声鹤唳,一时间,世界金融体系再度陷入了资金枯竭的局面。

B.“同一个世界,同一个梦想”,此次北京奥运会主弦律集中体现了奥林匹克精神的实质和普遍的价值观——团结、友谊、进步、和谐、参与和梦想。

C.面对陈水扁家族海外存钱事件,民进党一片切割之声,落井下石者有之,坐壁上观者有之,陈水扁已经没有能力扮演当局的主导角色。

D.近日,国务院安委会通报杭州地铁工地塌陷事故,要求深化建筑安全隐患排查治理工作,把建筑施工中防坍塌、堕落、爆炸等作为排查治理的重点。

查看答案
题型:阅读理解

What causes traffic jams? Too many cars, right? No! Some Brits are now saying that traffic lights are to blame for much of the congestion(交通拥挤). They suggest that traffic lights be removed at busy roads. They believe people are a better judge of when it’s safe to go, not a traffic light programmed by an absent regulator.

A report from the Institute of Economic Affairs, a UK think tank(智囊团), argues that abolishing traffic signals would decrease congestion, reduce exhaust emissions(废气排放)and improve safety.

The report said that removing lights should also prevent other bad behavior caused by signals, such as speeding up to catch a green light. It would also avoid the wasted time when drivers have to sit at a red light even if no one is using the green.

The idea may sound strange, but it’s not new. Seven cities and regions in Europe are experimenting with no-lights roads.

Drachten in the Netherlands has got rid of 16 of its traffic light crossings and changed the other two to roundabouts under a “shared space” scheme. At crossings, cyclists dutifully raise their arm when they want to make a turn, and drivers follow a first-arrived, first-through approach and communicate by hand signs, nods and waving.

The result? Typical journey time has been cut in half, and accidents and congestion have mostly disappeared.

There have been small collisions but no problem, said Hans Monderman, creator of the scheme. “We want small accidents, in order to prevent serious ones. It works well because it’s dangerous. The driver has to be responsible for his or her own risk.

“The many rules take away the ability to be considerate,” Monderman added. “We’re losing our responsibility for socially responsible behavior.”

So far, Drachten’s locals have called the experiment a success. “I am used to it now,” said Helena Spaanstra, 24. “You drive more slowly and carefully, but somehow you seem to get around town quicker.”

Tony Ooostward, 70, was equally enthusiastic. “I am a walker and now you are the boss at the crossroads, everyone waits for you. But at the same time walkers wait until there are a number of people wanting to cross at the same time.”

Owen Paterson, UK’s Shadow Transport Minister, visited Drachten. He said Britain should learn from the model. “The idea is to create space where there is mild anxiety among everyone so they all behave cautiously. No one drives fast along a busy street thinking that they have right of way.”

60.Which of the following is the best title for the passage?

A. Don’t Count On Traffic Lights              B. New Traffic Systems Needed

C. Turn Those Traffic Lights Off         D. Let People Have More Say In Traffic

61.According to the report from the Institute of Economic Affairs, abolishing traffic lights would NOT lead to ____.

A. more time being saved                   B. reduction of traffic jams

C. improvement of the environment    D. right of way being taken for granted

62.The underlined word “collision” in Paragraph 7 means closest to ____.

A. jam     B. accident     C. trouble     D. congestion

63.From the passage we can see that the experiment in Drachten worked well because ____.

A. walkers have become the boss of the crossroads

B. cyclists, walkers and drivers each have specially designed routes

C. everyone finds that they have to do their share in regulating traffic

D. drivers are more careful and wait for eyclists or walkers to pass first

查看答案
微信公众账号搜索答案