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  3. Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a day in the not-too-distant future whe

Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a day in the not-too-distant future whe

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问题    Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a day in the not-too-distant future when all autos will be abandoned and allowed to rust. Other authorities, however, think the auto is here to stay. They hold that the car will remain a leading means of urban travel in the foreseeable future.
   The motorcar will undoubtedly change significantly over the next 30 years. It would become smaller, safer, and more economical, and would not be powered by the gasoline engine. The car of the future would be far more pollution-free than present types.
   Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion. One proposed solution to this problem is the automated highway system.
   When the auto enters the highway system, a retractable arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically. Once attached to the rail, the car will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car’ s movements.
   The driver will use a phone to dial instructions about his destination into the system. The computer will calculate the best route, and reserve space for the car all the way to the correct exit from the highway. The driver will then be free to relax and wait for the buzzer that will warn him of his coming exit. It is estimated that an automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,500 to 2,000 vehicles that can be carried by a present-day highway.
According to the text, cars in the future______.
选项 A、will be more expensive
B、will be powered by petrol
C、will be larger and more comfortable
D、will be more environmental-friendly
答案D
解析 细节题。根据第二段中“It would become smaller,safer，and more economical，and would not be powered by the gasoline engine．The car of the future would be far more pollution-free than present types.”可知，未来的汽车应该是更小、更安全、更经济，不再使用汽油发动机，更环保。故D项正确。
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