D
Build the highway and watch the town grow.At first a few shops appear and maybe a restaurant.Then a hotel opens. Eventually new house are built. A village is born.
This is also how the virtual world has developed. Think of the Internet as the road carrying information between two computers.Think of the World Wide Web as the village. At first it is just a place on the virtual road where travelers meet. More travelers come bringing new kinds of information. New travelers come bringing new kinds of information.New villages are started.
Every willage has a founder.Tim Berners-Lee is the man who wrote the software programme that led to the foundation of the Word Wide Web.How did he get the idea? He tells us on his own web site. "One of the things computers were not able to do was store in formation from different sources. The dream behind the Web is of a common space in which we communicate by sharing information."
In 1991 his programmmes were placed on to the Internet.Everyone was welcome to use them.
Tim Berners-Lee could have followed the Microsoft route by forming a company to sell the programmes he invented. Or he could have joined another company. But in his view the Web is a language,not a pproduct. Charging a gee for using his programmes would have slowed the growth of the Web.And other companies would make similar products to compete. Instead of one World Wide Web there would be several smaller Webs. Each would use incompatible (不相容的) software. They Web is valuable because it uses a common computer language to reach people and share information. Competing webs would lose this value.Imagine if somebody sent you a bill every time you spoke a world of English.
In 1994 Tim Berners-Lee formed the World Wide Web Consortium,or W3C.More than 200 leading companies and laboratories are represented by W3C. Together they make sure that everyone, no matter what their equipment or solftware,can work 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.
68.The writer's purpose in writing the first two paragraphs is to ______.
A.give us some idea of the Internet
B.give us some idea of the Web
C.tell us how the idea of Web started
D.tell us the idea of the Web is wonderful
69.Tim Berners-Lee invented the World Wide Web in order to _____
A.place his programmers on the Internet
B.stop smaller webs appearing
C.help people to form a web site
D.let people share all kinds of information
70.According to the text,the disadvantage of competing webs is that they would ______.
A.slow the development of the Web
B.destroy the whole web system
C.lose the value of information
D.waste a lot of money
C
The villagers of Yaluma in Southern Mexico are some of the poorest people in the country. But now they have an extra source of income.They are being paid to grow and develop forests by the organization in charge of Formula One racing (一级方程式赛车),which pumps 5,500 tons of carbon dioxide (CO2) into the air every year.The idea is that the forests being planted around Yaluma will absorb this amount. It will also provide people there with money while wiping out motor racing's environmental debt.
Projects like this go under the name of "carbon trading". The basic idea is that governments and companies can buy the right to pump CO2 into the air by investing in green projrvyd. They can buy so-called "carbon credits" from countries which have succeeded in reducing CO2 emissions(排放物).
Supporters of carbon trading say that it brings money and green technology to poorer countries.It also provides a new way of doing busingess and spreading prosperity. They point out that the process of globalization will give people everywhere the most possible choice of products and services. Carbon trading is just another way of bringing that about. It is a "win - win" situation.
Opponents argue that nature comes before lifestyle. CO2 emissions need to be reduced, not bought and sold. And they believe that the rich world should lead the way.People might be willing to change the way they live to help save the world, but not to help the rich countries keep a lifestyle that depends on pollution.
Supporters of carbon trading believe in unlimited growth.Opponents believe that nature sets limits to the choices we make on how to live.It is "don't do " against "can do". It is life against lifestyle.
It is believed that modern lives are about choice.For example,the world can choose to take the danger of global warming seriously.And the sooner we choose to do it, the more choices we have about what to do next and the more time we have to do it in. We can also choose to pay no attention to the danger of global warming to keep our lifestyles. Then one day nature may give us no choice at all,and maybe not much of a life,either.
64.Carbon trading is discussed in the text in order to show the importance of ______ .
A.reducing pollution B.taking care of forests
C.spreading prosperity D.choosing lifestyle or nature
65."Carbon credits" may be used to ______.
A.get the right to pump CO2 into the air
B.get the right to pump CO2 into poor countries
C.learn about the way to reduce CO2 emissions
D.improve the way to reduce CO2 emissions
66.We can infer from the text that in the "win - win" situation _____.
A.rich countries perform their duty to help poor countries
B.poor countries get what they need from rich countries
C.both rich countries and poor countries get what they need
D.rich countries learn from poor countries in reducing pollution
67.In the opinion of people who are against carbon trading,the rich countries should ____.
A.guide poor countries in reducing CO2 emissions
B.show by example how to reduce emissions
C.offer more help to save the world
D.improve their lifestyles to keep the world clean
You______ her in her office last Friday; she's been out of town for two weeks.
|
A．needn't have seen |
B．must have seen |
C．might have seen |
D．can't have seen |
---How did you like the food cooked by Mrs Green?
---You could have had _______.
|
A．better everything |
B．anything best |
C．something good |
D．nothing better |
Before the child went to bed,the fater asked him to ________ all the toys he had taken out.
|
A．put off |
B．put up |
C．put away |
D．put out |
---It's very kind of you to see me off,Mr Johnson.
---______.It's the least we could do.
|
A．That's true |
B．Not at all |
C．I don't think so |
D．Don't say to |
