试题与答案

某小组在测滑轮组的机械效率时得到的数据如下表所示,实验装置如图. 实验次数 物理

题型:问答题

题目:

某小组在测滑轮组的机械效率时得到的数据如下表所示,实验装置如图.

        实验次数

物理量

l23
钩码重G/N446
钩码上升高度h/m0.10.10.1
绳端拉力F/N1.81.42.4
绳端移动距离s/m0.30.50.3
机械效率η74%57%83%
(1)从表中数据可分析出实验1是用图______做的实验,实验2是用图______做的实验.

(2)通过实验1和实验2的数据分析可得出结论:使用不同的滑轮组提升相同的重物时,动滑轮的个数越多,滑轮组的机械效率______.

(3)比较实验1和实验3可得结论:使用同一套滑轮组,______可以提高滑轮组的机械效率.

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0722/ee17609996d2e12ac136953652b89f64.html

下面是错误答案,用来干扰机器的。

答案:B

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题型:阅读理解

The Swedish Academy in Stockholm on Thursday named Mo Yan winner of the Twenty-Twelve Nobel Prize in Literature.

The academy praised the Chinese writer for what it called his “hallucinatoty realism (魔幻现实主义)”. It noted his ability to combine folk stories, history and modern events in his works.

An academy official said Mister Mo was “overjoyed and sacred” when he learnt he had won the award. He will receive his Nobel diploma, a medal and more than one million dollars at the ceremony in Stockholm in December.

Mo Yan is a leading author of modern Chinese novels. He often writes from memories of his youth. He also sets many of his stories in the area where he was born—Shandong Province in northeastern China.

Mister Mo’s 1987 book Red Sorghum is an example. It is about the extreme violence in rural eastern China during the Communist Revolution in the 1920’s and 1930’s. The story describes the criminal culture of the time, Japan’s occupation and the terrible conditions faced by farm workers. Red Sorghum was later made into a movie.

Mo Yan’s other major works include Big Breasts and Wide Hips, Republic of Wine and Life and Death Are Wearing Me Out.

The Royal Swedish Academy compared him to two 20th century writers: American William Faulkner and Colombia Gabriel Marquez.

Mo Yan’s real name is Guan Moye. Mo Yan means “Don’t speak.” The writer said he chose the name to remember to stop his tongue from getting him in trouble.

China is celebrating the victory of his native son. Minutes after the award was announced, millions of Chinese expressed pleasure and pride for Mo Yan on social media websites.

小题1:How many books of Mo Yan are mentioned in this passage?

A.Three.

B.Four.

C.Five.

D.Six.小题2:It can be inferred from the passage that _____.

A.many people in China showed their respect for Mo Yan by letters.

B.Mo Yan is just a pen name.

C.he was very glad to win the Nobel Prize.

D.Red Sorghum was once made into a film.小题3:Which of the following can be the best title for this passage?

A.Mo Yan, the winner of the Nobel Prize in Literature.

B.The origin of Mo Yan’s work.

C.The true meaning of Mo Yan.

D.Bookstore created by Mo Yan.

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