问题 选择题

下列命题正确的是(  )

A.有两个面平行,其余各面都是四边形的几何体叫棱柱

B.有两个面平行,其余各面都是平行四边形的几何体叫棱柱

C.有两个面平行,其余各面都是四边形,并且每相邻两个四边形的公共边都互相平行的几何体叫棱柱

D.用一个平面去截棱锥,截面与底面之间的部分组成的几何体叫棱台

答案

对于A,它的每相邻两个四边形的公共边不一定互相平行,故错;

对于B,也是它的每相邻两个四边形的公共边不一定互相平行,故错;

对于C,它符合棱柱的定义,故对;

对于D,它的截面与底面不一定互相平行,故错;

故选C.

阅读理解

阅读理解(共5小题,每小题2分)

Tom saw an advertisement(广告)in a newspaper for a beautiful bicycle. It cost 55 pounds so he went to the shop and asked to see one of the wonderful bicycles. The owner of the shop was happy to show one to Tom. Tom examined it carefully and then turned to the owner and said, ‘There isn’t a lamp(灯)on this bicycle, but there was one on the bicycle in your advertisement.” “Yes, sir” answered the man, “but the lamp isn’t included(包括)in the price of the bicycle.” “Not included in the price of the bicycle?” Tom said angrily, “But that’s not honest. If the lamp is in the advertisement, it should be included in the price.” “Well, sir” answered the shop owner coldly. “There is also a girl on the bicycle in the advertisement, but we can not give you a girl with the bicycle, either.”

小题1:In the advertisement, there was a     and a  on the bicycle.

A. lamp, girl         B. newspaper, shop owner        C. lamp, man

小题2:After he read the advertisement. Tom decided to    .

A.see and buy the lamp    B. ask the owner   C. see and buy the bike 

小题3:Tom  after he looked at the bike carefully

A. returned the bike to the shop owner

B. didn’t find a lamp on the bicycle

C. showed the bike to the shop owner

小题4:Tom thought it was  for the shop owner to sell the bike without a lamp while there was one in the advertisement.

A. wrong    B. honest    C. necessary

小题5:The text gives us a lesson that   .

A. we must read a newspaper carefully

B. bicycle must be examined carefully before they are bought

C. sometimes we can’t completely(完全地)believe an  advertisement

选择题