问题 选择题

下列语句中,正确的个数有(  )

①同位角相等,两直线平行;②两直线平行,同旁内角互补;③直四棱柱是四面体;④直棱柱的侧棱长度都相等.

A.4个

B.3个

C.2个

D.1个

答案

①同位角相等,两直线平行是平行线的判定定理,故正确;

②两直线平行,同旁内角互补是平行线的性质定理,故正确;

③直四棱柱是六面体,故错误;

④直棱柱的侧棱长相等,故正确,

故选B.

阅读理解

阅读理解。

     Today people can use the phone to talk with others almost anywhere on earth. But when you use the

phone, you don't see the person you are talking with. This may change in the near future.

     Today some people are using a kind of telephone called the picture phone or vision phone. With it, two

people who are talking can see each other.

     Picture phones can be useful when you have something to show to the person you're calling. They may

have other uses in the future. One day you may be able to ring up a library and ask to see a book. Then you'll

be able to read the book right over your picture phone. Or you may be able to go shopping through your

picture phone. If you see something in the newspaper that you think you want to buy, you'll go to your phone

and call the shop. People at the shop will show you the thing you're interested in right over the phone. You'll be

able to shop all over town and never even leave your room!

1. Today people can use the phone to talk with others _____.

A. in all the towns

B. in some places in the world

C. only in big cities

D. almost anywhere on earth

2. The underlined word "it" in the passage means _____.

A. the picture phone

B. any phone

C. the use

D. the change

3. We can _____ through the picture phone according to (根据) the text.

A. write a book

B. do shopping

C. play games

D. have classes

4. Picture phones can be used for _____.

A. ringing up a library to see a book

B. going shopping without leaving our homes

C. showing the person we're talking with something

D. All of the above

5. The title of the article can be "_____".

A. The telephones

B. Picture phones

C. Shopping on the phone

D. Talking on the phone

问答题