A. it's too far away B. it can't fly without air
C. there is no water on the moon D. it is too small
( )4. Rockets with men in them have reached .
A. the earth B. the sun C. the moon D. the planet
( )5. One day rockets may be able to go to any place .
A. in the world B. in the air
C. in the sun D. in space
(B)
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 network are called the Internet. Once you have learned to use the Internet, you can do a lot of interesting things on the World Wide Web.
What is the World Wide Web?
The World Wide Web has been the most popular development of the Internet. The Web is like a big electronic (电子的)book with millions of pages. These pages are called homepages(主页).
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 of film star, talk to your friends or even do some shopping on the pages. Most pages have words, pictures and even sound or music.
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