完形填空。 Someday little cars may take the place of today's cars. If everyone 1 such a little car in the future, and less pollution in the air, there will be more parking space in cities,and the streets will be 2 crowded.The space now for one car of' the usual size can hold 3 one such little car. The little cars will 4 much less to own and to drive. Driving will be 5 too, because these little cars can go only 50 kilometres an hour. The cars of the future will be fine for going 6 the city, but they will not be useful for going far away.The little car needs  only  two  batteries (电池) —one  battery for the motor, and 7 for the horn and the lights.If we still 8 the big cars along with the small ones,we will need to 9 two kinds of roads. Some roads will be used 10 the big fast cars, and others will be  needed for the  small , slower ones. (     )1. A. drives (     )2. A. more (     )3. A. at most (     )4. A. pay (     )5. A. faster (     )6. A. over (     )7. A. another (     )8. A. think (     )9. A. build (     )10.A．to B. sits B. less B. no more B. spend B. harder  、 B. around B. one B. use B. put B. as C. makes C. much C. less than C. cost C. safer C. from C. the other C. park C. found C．for D. sells D. fewer D. more than D. have D. more dangerous D. past D. others D. drove D. open D．in