与cut有关的短语: cut down ① 砍倒,② 削减.压缩 cut in ① 插入.插话 ② 插队.超车 cut off 切断.隔断.断绝: cut out 剪成.戒掉 cu——青夏教育精英家教网—

与cut有关的短语: cut down ① 砍倒,② 削减.压缩 cut in ① 插入.插话 ② 插队.超车 cut off 切断.隔断.断绝: cut out 剪成.戒掉 cut through 凿穿.从中间穿过 cut up 切碎【查看更多】

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　　On Saturday, hundreds of millions of people around the world will celebrate the 30th anniversary of Earth Day．More than 4, 000 organizations are planning events in almost 200 countries．　　1　　to be the largest environmental event in history in 2000．

　　Earth Day is a yearly call for people to work together to save the planet．　　2　　that the first Earth Day took place in the United States．Former Senator Gaylord Nelson started Earth Day because he believed few public officials were concerned about the environment．　　3　　 to educate people about environmental issues．

　　Earth Day led to the passage of important laws in the United States．Those laws included the clean air and clean water acts and the creation of the Environmental Protection Agency．The environment in the United States is better than 　　4　　．There are stronger laws and better technologies．And more people are concerned about the issues．But there are major threats around the world．These include overpopulation, the reduction in animal and plant species and the rising temperature of the Earth．

　　　　5　　that are still the most serious problems in many developing countries．The Earth’s growing population is putting more pressure on land and water supplies．The destruction of tropical forests threatens rare kinds of animals and plants．And that burning fuels, such as oil and coal, is causing a dangerous warming of the Earth．　　6　　 that the global warming could be affecting．

A．It is not only the weather but also the increasing water levels and changing the planet’s structure

B．it was 30 years ago

C．It was on April 22nd, 1970

D．It is expected

E．It is air and water pollution

F．It is his aim

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阅读理解

　　Some experts feel that cars are certain to fall into disuse．They see a day in the not-too-distant future when all cars will be deserted(被遗弃的)and made useless．Other experts, however, think the car is here to stay．They hold that the car will remain a lead-ing means of city travel in the foreseeable future．

　　The car will undoubtedly(无容置疑的)change greatly over the next 30 years．It should become smaller, safer, and more practical, and should not be powered⑨ by the gas engine．The car of the future should be far more pollution-free than present types．

　　Unless changes take place in the power system, the car in the future will still be the main problem in city traffic jams．One suggested solution to this essential⑩ problem is the automated(自动化)system, which seems to hold water．

　　When the car enters the highway system, a small arm will drop from the car and connect with a rail, which is similar to those powering subway trains electrically(用电的，与电有关的)．Once joined to the rail, the car will become electrically powered from the system, and control of the car will pass to a central computer．The computer will then monitor all of the car's movements．

　　The driver will use the telephone to dial instructions about his position and the place he heads for into the system．The computer will find the best way and reserve space for the car all the way to the correct exit from the highway．The driver will be free to relax and wait for the call that will warn him of his coming exit(出入口)．It is believed that an automated highway will be able to deal with 10 000 cars per hour, compared with the 1500 to(2000 cars that can be carried by a present-day highway．

(1)

What is the main concern of the author of the passage?
[　　]
A．	How to make cars pollution free．
B．	How to make cars smaller and safer．
C．	How to solve the problem of traffic jam．
D．	How to develop an automated subway system．

(2)

We can infer from this passage that ________．
[　　]
A．	the car connected to the rail on the highway will be powered by electricity
B．	the lack of oil is forcing people to find new means to power automobiles
C．	the driver under the system will be told where to get out of the highway
D．	the future car will become larger, faster, prettier and less expensive

(3)

What provides cars with electric power in an automated highway system?
[　　]
A．	An engine．
B．	A rail．
C．	A computer controller．
D．	A small arm．

(4)

Which of the following statements is true according to the passage?
[　　]
A．	The driver puts his information in the system by e-mail．
B．	The new system can deal with 10 times as many cars as the present one．
C．	After entering the automated system, the driver needs to do nothing but relax himself．
D．	Some experts are not confident of the future, while the author is in favor of the opposite view．