问题 单项选择题

关于立杆底座下的垫板长度和厚度尺寸的规定,正确的是()

A.垫板长度不小于3跨,厚度不小于50mm

B.垫板长度不小于2跨,厚度不小于50mm

C.垫板长度不小于2跨,厚度不小于30mm

D.垫板长度不小于3跨,厚度不小于30mm

答案

参考答案: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 aretalking with. That 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 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 are interested in right over the phone. You will be able to shop all over the town and never even leave your home.

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

A. in all the town

B. in some places in the world

C. only in big cities

D. almost anywhere on earth

2. The underlined word "it" in the text means

A. the picture phone

B. any phone

C. the use

D. the change

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

A. Write a book

B. do the shopping

C. play games

D. have c1asses

4. Picture phones are very

A. useful

B. impossible

C. bad

D. badly

5. Which is NOT true according to the passage?

A. Today some people are using a kind of telephone called the picture phone or vision phone.

B. With the picture phone, two people can't see each other.

C. The phone is very useful.

D. Today people can use the phone to talk with others almost anywhere on earth.

单项选择题 A型题