Today, people use the Internet to shop, play games, make friends and read the news. Many young people can’t imagine life without it. Most older people, on the other hand, think the Internet is only 10 or 15 years old. In fact, the Internet has been used for a much longer time than most people think.

In 1957, the United States was in the middle of the Cold War. The Soviet Union(苏联) had sent up the first satellite(卫星), named Sputnik, into space. This meant the Soviets were ahead of the U.S. in technology. Americans were afraid. Scientists in the army of America started developing ideas for protecting the country. One of the ideas was a network(网络) that would let people across the country communicate by using computers.

The network took more than ten years to develop. It was first tried out in 1969. For another twenty years, it was used only by scientists who worked with the U.S. government and by some engineers. Then, in 1990, the army of America gave the control of the Internet to the National Science Foundation. The Internet then became available to colleges all over the United States and to scientists across Europe.

The biggest change was that people started to use the Internet in 1992. For the first time, the Internet was opened to the general public, creating what is now known as the World Wide Web. Soon, no one government controls the Internet and it just gets bigger and bigger. It makes our world different.

判断正(A)误(B)
21. In fact, the Internet has been used for a much longer time than most people think.
22. Scientists in the U.S. started using the Internet in 1957.
23. After more than ten years’ development, the network was first tried out in 1969.
24. In 1990, the Internet became available to colleges all over Europe.
25. Today, many governments are in control of the Internet and it gets bigger and bigger.