There are little cars that may some day take the place of today’s automobiles(汽车). If everyone drives such a little car in the future, there will be less pollution in the air, there will be more parking space in cities, and the streets will be less crowded. The space now for one car of the usual size can hold at least three such little cars.
The little cars will cost much less to own and to drive. Driving will be safer, too, as these little cars can go only 65 kilometers an hour.
The cars of the future will be fine for going around the city, but they will not be useful for going far away. If the car is powered by electricity, it will have two batteries—one battery for the motor and the other for the horn (喇叭), signals (信号灯), etc. Little cars which are powered by gas will go 45 kilometers before needing to stop for more gas.
If big cars are still used along with the small ones, two sets of roads will be needed to set up in the future. Some roads will be used for the big, fast cars, and other roads will be needed for the small, slower ones.
1. What’s the advantage (优势) of the small cars?
A. There won’t be so much pollution and the small cars won’t be so expensive as the big ones.
B. It will be safer to drive these small cars.
C. There will be more space for cars to park.
D. All of the above.
2. Two sets of roads are necessary in the future in order to      .
A. prevent car accidents
B. make the city more beautiful
C. let small cars run fast
D. limit the speed of the cars
3. Which of the following is true according to the passage?
A. A car of the usual size now is three times as big as the small car.
B. The small car with a speed of 65 kilometers an hour is much more useless than a car of the usual size.
C. the little car will be safer but cost more.
D. The little car will need more gas.
4. The best title for this passage should be      .
A. Big Cars and Small Cars
B. How to Drive Small Cars
C. Cars for Tomorrow
D. Cars for Everyone