Here are little cars that may some day take the place of today’s cars. If everyone drives such a car in the future, there will be less pollution in the air. There will also be more parking spaces in cities, and the streets will be less crowded. Three such Cars fit in the space now needed for one Car of the usual size. The little cars will cost much less to own and to drive. Driving will be safer, too, as these little cars can go only 55 miles per hour. The Cars of the future will be fine for getting around a city, but they will not be useful for long trips.

What’s the first advantage of little cars
There will be less（）

下列各种计划免疫制剂及其类别，哪组排列是正确的类毒素灭活菌（疫）苗减毒活菌（疫）苗（）

A.白喉破伤风麻疹

B.百日咳麻疹流行性脑脊髓膜炎

C.白喉百日咳介苗

D.破伤风流行性脑脊髓膜炎乙型脑炎

E.破伤风麻疹脊髓灰质炎