问题 单项选择题

客运专线路堤填筑时应横断面全宽、纵向分层填筑压实,不得出现(),当原地面高低不平时,应先从最()分层填筑,并由()填筑。

A、纵向接缝、高处、中心向两边

B、横向接缝、高处、两边向中心

C、纵向接缝、低处、两边向中心

答案

参考答案:C

阅读理解

阅读理解。

     A kind of little cars may be seen in the streets in the future. People will like this kind of small cars better

than the big ones. The car is as small as a bike. But it can carry two people in it. Everybody can drive it easily,

just like riding a bike. Even children and old people can drive them to schools or parks.

     If everyone drives such cars in the future, there will be less pollution in the air. There will be more space

for all the cars in cities, and there will also be more space for people to walk in the streets.

     The little cars of the future will cost less money to buy and to drive. These little cars can go only 65

kilometers an hour, so driving will be safer. The cars of the future will be fine for going around the city, but

they will not be useful for a long trip.

     This kind of cars can save a lot of gas. They will go 450 kilometers, then they have to stop for more gas.

They are nice cars, aren't they?

1. If you drive this kind of little cars for four hours, you can probably go ______ at most. 

A. 260 kilometers

B. 65 kilometers

C. 450 kilometers

D. 130 kilometers

2. Why do these little cars have to stop after going 450 kilometers? 

A. For more water.

B. For more gas.

C. To have a rest.

D. To charge (充电)

3. Which of the following statements is NOT true? 

A. Driving big cars can make the air dirtier. 

B. The little cars can make more space for other cars and people. 

C. These little cars will be useful for a long trip. 

D. This kind of cars can save much gas.

单项选择题