试题与答案

已知地球的半径为R,质量为M,将地球看作均匀球体,若有可能将一质量为m的物体放在

题型:选择题

题目:

已知地球的半径为R,质量为M,将地球看作均匀球体,若有可能将一质量为m的物体放在地球的球心处,则此物体受到地球的万有引力大小为(  )

A.

GMm
R2

B.无穷大

C.零

D.无法确定

答案:

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题型:阅读理解

NO.4 Middle School

Kunming, Yunnan

April 2nd, 2004

Dear editor(编辑)

I live in a beautiful city. Many visitors come to my city. There are so many colorful peacocks(孔雀)here .The peacocks mostly live on the grass land of Dongfeng Square(广场)

They are given food freely by visitors ,They usually throw food to them ,and  don’t think about at all whether the food is right or not. Some of the peacocks became ill, some even died after eating the bad food given by the visitors . I’m sure most of the visitors who throw food to the peacocks really like the birds ,but don’t realize(意识到)that they may be doing them harm (伤害).The visitors should be told that what have done is very harmful to the birds , and this kind of thing must be stopped from happening Perhaps we can build some small shops beside Dongfeng Square to sell peacock food .For us every person, it’s our duty to give more love to these beautiful birds and to look after them carefully.

Yours,

Sun Yan

小题1:Many visitors come to the writer’s city to           

A.do some shopping

B.see beautiful peacocks

C.play on Dongfeng Square

D.eat nice food小题2:Some peacocks became ill and died because some visitors            

A.didn’t give them any food

B.gave them too much food

C.threw them some bad food

D.loved them and played with them小题3:Some shops can be built beside Dongfeng Square so that they may            

A.sell food for visitors

B.sell food for peacocks

C.make the square more beautiful

D.have the beautiful birds小题4:From the passage we know people should            

A.live and play with the birds

B.stop the birds from eating too much

C.give right food to the birds

D.give more food to the birds小题5:We can guess the writer of the letter, Sun Yan ,may be a            

A.visitor

B.shopkeeper

C.square keeper

D.student

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题型:选择题

2013年5月19至22日,李克强同志对印度进行了正式访问,双方就经贸、农业、文化等领域签署了一系列合作文件。据此完成下列各题

小题1:李克强访问时正值印度的(  )

A.干季

B.湿季

C.旱季

D.雨季小题2:印度和中国的相似之处有(  )

①人口众多,粮食需求量大          ②都属于发展中国家

③高新技术产业已居世界前列        ④工业高度发达

A.①②

B.①③

C.③④

D.②④

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