The Internet is becoming important in our life. How much do you know about it? The following questions and their answers will help you to know more about the Internet.

What is the Internet?

The Internet is a large, world-wide collection (聚集) of computer networks (网络). A network is a small group of computers put together. The Internet is many different kinds of networks from all over the world. These networks are called the Internet. If you have learned to use the Internet, you can have a lot of interest on the World Wide Web (网) .

What is the World Wide Web?

The World Wide Web has been the most popular development of the Internet. It is like a big electronic (电子) 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 favourite 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 (点) and an @ (means “at”). For example: Lily @ Yahoo.com. Write a message, type a person’s e-mail address, and then send the message across the Internet. People don’t need to use stamps, envelopes or go to the post office because of 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. an interesting picture

3.The sentence “You can talk to your friends on the pages.” means ______.

A. you can talk to your friends face to face

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

C. you can talk to your friends through the same computer

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

4.People like to use e-mail to send messages to their friends 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. it’s interesting

5.The “e” in e-mail means_______.

A. easy B. entrance C. electronic D. enjoyable

C

Indian scientists have designed a new device* that they hope will solve one of the biggest problems with the use of solar energy. They call the device a solar tree. Solar trees have metal “branches*” which are just from a tall pole at different levels. Each branch holds a solar panel*. These panels have large metal boards that collect energy from the sun and turn it into electricity.

Daljit Singh Bedi is the main scientist at the Council of Scientific and Industrial Research in India. Bedi says the shape of the solar trees makes it possible to fit more solar panels in a space than traditional systems do. This means less land would be needed to produce solar energy. “It takes about four square meters of space to produce energy which may need 400 square meters of space,” he says.

Scientists believe the energy a solar tree collects will be enough to power five homes. The solar tree will make it easier to provide solar energy for homes in cities. The trees will also take less space from farmers in rural areas. Bedi says solar trees will collect more energy than normal solar panels on the tops of buildings. “This design makes the solar panels exposed* more towards the sun,” he says. “And that way people are able to use 10 to 15 percent more energy.”

India has promised to reduce its greenhouse gas production. The country’s promise depends heavily on increasing solar energy. The cost of solar panels has gone down in recent years. This has increased the possibility of applying*solar trees in India.

Amit Kumar is the senior director of the Energy and Resources Institute in New Delhi. He says gaining access* to land takes time and increases costs. He adds that it is still not clear how useful these new developments in solar power technology are. “Only when we put those trees on a large scale* will we be able to get that answer,” he says.

1.We may probably read this passage in ___________.

A. Culture Views B. Nature and Science

C. Story Books D. Travelling Guide Book

2.Compared the traditional system, the main advantages of the solar tree is _____________.

A. we can see many “branches” in new solar tree

B. it surely produces more energy than traditional system

C. it’s reducing India’s more greenhouse gas production now

D. fewer and fewer people will use it than traditional ones

3.What does the underlined word "this" in the fourth paragraph refer to (指代)?

A. greenhouse gas production B. the solar panels

C. the new solar tree D. country’s promise

4.In the last paragraph, what do you think of what Amit Kumar said?

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