问题 单项选择题

4个不同的小球放入甲、乙、丙、丁4个盒中,恰有一个空盒的方法有()种。

A.C41×34

B.C43P33

C.C41P44

D.C43C42P33

E.以上结论均不正确

答案

参考答案:D

解析:

捆绑法。先从4个不同的小球中任意拿出2个,即C42,将其捆绑看成一个整体,再与剩下的2个球放入甲、乙、丙、丁4个盒中的任意3个,即P43,共有方法C42P43,应选(D)。

阅读理解

For most people, the word "fashion (时尚)" means "clothes". But people may ask the question, "What clothes are in fashion?" And they use the word "fashionable" in the same way.

"She was wearing a fashionable coat. His shirt was really a fashionable colour. "

But of course there are fashions in many things, not only in clothes. There are fashions in holidays, in restaurants, in films and books. There are even fashions in school subjects, jobs . . . and in languages.

Fashions change as time goes. If you look at pictures of people or things from the past, you will see that fashions have always changed. An English house of 1750 was different from one of 1650. A fashionable man in 1780 looked very different from his grandson in 1860.

Today fashions change very quickly. Some of this is natural. We hear about things much more quickly than in the past. Newspapers, radios, telephones and television send information from one country to another in a few hours.

New fashions mean that people will buy new things, so you see there is money in fashion.

小题1:Most people think that "fashion" means __________.

A.subjects

B.holidays

C.books

D.clothes小题2:By         we can see that fashions change as time goes.

A.finding a job

B.looking at pictures

C.eating in a restaurant

D.wearing a fashionable coat小题3:In the 5th paragraph , the writer mentions           kinds of ways to send information.

A.three

B.four

C.five

D.six小题4:"There is money in fashion" means      .

A.people like fashion and money

B.fashionable things are expensive

C.one can make money through fashion

D.a fashionable man makes much money小题5:The passage is mainly about             .

A.the changes of fashions

B.the kinds of colours

C.the money in fash ion

D.the differences between houses

单项选择题