The real solution to the gas shortage problem is ________.
A.) to make less cars
B.) to develop a public transportation system
C.) to make gas-saving cars
D.) to develop train service
正确答案是C
The real solution to the gas shortage problem is ________.
A.) to make less cars
B.) to develop a public transportation system
C.) to make gas-saving cars
D.) to develop train service
正确答案是C