Some pessimistic professors feel a little worried that mobile won’t be useful in the near future. They see a day when all vehicles will be abolished. Other authorities, however, argue that the transportation will remain a leading way of urban travel in the foreseeable future.
The motorcar will undoubtedly change significantly over the following 30 years. It should become smaller, safer, and more economical. What’s more, the future car should be more pollution-free than current kinds,
Without regarding its power source, the auto in the future will still be the main problem in urban traffic congestion(拥挤). One key to this issue is the automated high-speed system.
As the auto enters the highway system, a retractable (可伸缩的) arm will drop from the auto and make contact with a rail. For the time it attaches to the rail, the vehicles will get electrically powered from the system, and control of the vehicle will pass to a central computer. The computer
A. How to make mobile phones cheaper.
B. How to make safer and more economical vehicles,
C. How to solve the problem of traffic jams.
D. How to develop an automated subway system.
Some pessimistic professors feel a little worried that mobile won’t be useful in the near future. They see a day when all vehicles will be abolished. Other authorities, however, argue that the transportation will remain a leading way of urban travel in the foreseeable future.
The motorcar will undoubtedly change significantly over the following 30 years. It should become smaller, safer, and more economical. What’s more, the future car should be more pollution-free than current kinds,
Without regarding its power source, the auto in the future will still be the main problem in urban traffic congestion(拥挤). One key to this issue is the automated high-speed system.
As the auto enters the highway system, a retractable (可伸缩的) arm will drop from the auto and make contact with a rail. For the time it attaches to the rail, the vehicles will get electrically powered from the system, and control of the vehicle will pass to a central computer. The computer
A. safe
B. economical
C. less pollution
D. spacious
我来回答: