The main idea of this passage is . A.when the Internet came into being B.how Tim Berber——青夏教育精英家教网—

摘要：The main idea of this passage is . A.when the Internet came into being B.how Tim Berbers-Lee formed W3C C.why computers develop so rapidly D.how the World Wide Web started E Reducing the use of cars during rush traffic hours will make the environment more livable.Unfortunately,our present living and working environments encourage the use of cars.But,the car is taking us down the road in lower-quality air.The exhaust from cars: -damaging the earth’s protective ozone layer and helping to cause the global warming; -causes as much as 50% of the smog-producing compounds and chemical rain in our atmosphere; -causes 60% of the carbon monoxide in our atmosphere. When you consider that the average person breathes in 9 000 quarts of air a day,you realize how important clean air is to human being. The government has spent billions of dollars to control car pollution.Yet,some big cities are still in violation of public health standards that protect people from breathing poisonous air.The health care costs related to unclean air are huge. The traditional way of cleaning up what comes out of tailpipes has not done the job of getting rid of automobile emissions.Yet today’s cars produces far less pollution than models from the 1960’s.But there are now almost 51 million more cars on the road than there were in 1960,and drivers are traveling many more miles.As a result,cars are still the single largest source of city pollution today. If we are going to achieve clean air,we need to discourage car use by individuals,especially during rush driving hours. At the same time we reduce car use,we must also improve our public transportation system.If going to and from work by public transportation was convenient and cheap,people would use the system instead of using cars to drive to work. Yes,it will cost money to improve our public transportation system.But we now spend billions each year in controlling car emissions without much success.Giving some of that money to public transportation would be a small price to pay for cleanest air. Unless we do something to reduce car use and get people to use public transportation,our love affair with the car will be the death of our environment.

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阅读理解

阅读下列短文，从每题所给的四个选项(A、B、C、D)中选出最佳选项。

　　Tim Berners - Lee is the man who wrote the software programme that led to the foundation of the world Wide Web. Britain played an important in developing the first generation of computers. The parents of Tim Berners - Lee both worked on one of the earliest commercial computers and talked about their work at home. As a child he would build models of computers from packaging materials. After graduating from Oxford University he went on to the real thing. In the 1980s scientists were already communicating using a primitive version (原始版本) of e - mail.

　　While working at a laboratory in Switzerland, Tim Berbers - Lee wrote a programme which let him store those messages. This gave him another idea: wrote a programme that will let academics from across the world share information on a single place. In 1990 he wrote the HTTTP and HTML programmes which formed the basis of the World Wide Web.

　　The next year his programmes were placed on to the Internet. Everyone was welcome to use them and improve them if they could. Programmers used his codes to work with different operating systems. New things like Web browsers and search engines were developed. Between 1991 and the 1994 the number of web pages rose from 10 to 100,000.

　　In 1994 Tim Berners - Lee formed the newly formed World Wide Web Consortium or W3C. More than 200 leading companies and laboratories are respected by W3C. Together they make sure that everyone can share equally on the web. “The web can help people to understand the way that others live and love. It helps us understand the humanity of people.” He says.

1．The main idea of the passage is ________.

[　　]

A．when the Internet came into being

B．how Tim Berners - Lee formed W3C

C．why computers develop so rapidly

D．how the World Wide Web started

2．Scientists began to communicate using e - mail ________.

[　　]

3．He made up his mind to write a programme that would let people from across the world share information on a single place when ________.

[　　]

A．he was a child

B．He studied in Oxford University

C．he formed W3C

D．he worked at a lab in Switzerland

4．Which of the following is NOT true?

[　　]

A．The number of web pages rose very rapidly in the 1990s.

B．Tim's programmes were placed on to the Internet in 1990.

C．The World Wide Web will have an effect on the social development.

D．Tim Berners - Lee made a great contribution to the computer science.

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阅读理解

　　Tim Berners-Lee is the man who wrote the software program that led to the foundation of the World Wide Web. Britain played an important part in developing the first generation of computers. The parents of Tim Berners-Lee both worked on one of the earliest commercial(商业)computers and talked about their work at home. As a child he would build models of computers from packaging material. After graduating from Oxford University he went on to the real thing. In the 1980's scientists were already communicating using a primitive version of e-mail. While working at a lab in Switzerland Tim Berners-Lee wrote a program, which let him store these messages. This gave him another idea that he was going to write a program that would let academics(学术界人士)from across the world share information on a single site. In 1990 he wrote the HTTP and HTML programs, which formed the basis of the World Wide Web.

　　The next year his programs were placed on to the Internet. Everyone was welcome to use them and improve them if they could. Programs used his codas to work with different operating systems. New things like web browsers and search engines were developed. Between 1991 and 1994 the number of web pages rose from 10 to 100,000.

　　In 1994 Tim Berners-Lee formed the newly World Wide Web consortium(协会), or W3C. More than 200 leading companies and labs are represented by W3C. Together they make sure that everyone can participate equally on the Web.“The Web can help people to understand the way that others live and work. It helps us understand the humanity of people”he says.

(1)From the passage we can infer that Tim Berners-Lee is most probably ________.

[　　]

A．British　　　　B．American

C．Swiss　　　　D．French

(2)The main idea of the passage is ________.

[　　]

A．when the internet came into being

B．how Tim Burners-Lee formed W3C

C．why computers develop so rapidly

D．how the World Wide Web started

(3)Scientists began to communicate using e-mail ________.

[　　]

A．in 1980　　　　 B．after the 1980's

C．before 1990　　　　D．in the 1960's

(4)He made up his mind to write a program that would let people from across the world share information on a single site when ________.

[　　]

A．he was a child

B．he studied on Oxford University

C．he formed W3C

D．he worked at a lab in Switzerland

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