问题 选择题
下列计算正确的是(  )
A.22•20=23=8B.(232=25=32
C.(-2)(-2)2=-23=-8D.23÷23=2
答案

答案:C

阅读理解

阅读短文,选择正确答案。

    The internet is becoming important in our life. How much do you know about it? What is the internet?

    The internet is a large, worldwide collection of computer networks, A network is a small group of computers

put together. The Internet is many different networks from all over the world. These networks are called the

Internet. Once you have learned to use the Internet, you can have a lot of interest on the World Wide Web.

    What is the World Wide Web?

    The World Wide Wed has been the most popular development of the internet: The Web is like a big electronic

book with millions of pages. These pages are called homepages.

    You can find information about almost anything in the world on these pages. For example, you can use the

Internet instead of a library to find information for your homework. You can also find information about your

favorite sport or film star, talk to your friends or even do some shopping on the pages. Most pages have words,

pictures and even sound or music.

    What is e-mail?

    Electronic mail (E-mail) is a way of sending messages to other people. It's much quicker and cheaper than

sending a letter.

    If you want to use e-mail, you must have an e-mail address. This address must have letters and dots and an

"@" (meaning "at"). This is what an address looks like: e-mail@star.net. Write a message, type in the person's

e-mail address, then send the message across the Internet. People don't need to use stamps, envelopes or go to

the post office since the invention of the internet. Quick, easy and interesting, that's the Internet!

1. The Internet is ________. [ ]

A. a big computer

B. a small group of computers

C. lots of computer networks

D. the world Wide Web

2. The World Wide Web is like _______. [ ]

A. an electronic book

B. homepages

C. an electronic page

D. air interesting picture

3. What does "talk to your friends on the pages" mean? It means ________. [ ]

A. you can talk to your friends face to face

B. you can type your words in the computer and then end them to your friends across the internet.

C. you talk to our friends through the same computer.

D. you go to your friends houses to talk to them

4. People like to use e-mail to send messages to their friends and family because _______. [ ]

A. they don't have to pay any money

B. it's faster and cheaper

C. they don't need to have stamps, envelopes or addresses

D. sending a mail is interesting

5. The "e" in e-mail means ________. [ ]

A. easy

B. electrical

C. electronic

D. enjoyable

单项选择题 案例分析题