问题 多项选择题

以下有关膨胀土的叙述中,正确的有()。

A.强膨胀土稳定性差,不应作为路填料

B.弱膨胀土可以不经过加工、改良处理就作为填料

C.弱膨胀土可根据当地气候、水文情况及道路等级加以利用

D.对于直接使用中、弱膨胀土填筑路堤时,应及时对边坡及顶部进行防护

E.可用接近最佳含水量的中等膨胀土填筑路堤,但两边边坡部分要用非膨胀土作为封层

答案

参考答案:A, C, D, E

解析:本题考核的是膨胀土。膨胀土须经过加工、改良处理作为填料使用。

阅读理解

About twenty of us had been fortunate enough to receive invitations to a film-studio(影棚)to take part in a crowd-scene. Although our "act" would last only for a short time, we could see quite a number of interesting things.

We all stood at the far end of the studio as workmen prepared the scene, setting up trees at the edge of a winding path. Very soon, bright lights were turned on and the big movie-camera was wheeled into position. The director shouted something to the camera operator and then went to speak to the two famous actors nearby. Since it was hot in the studio, it came as a surprise to us to see one of the actors put on a heavy overcoat and start walking along the path. A big fan began blowing tiny white feathers down on him, and soon the trees were covered in "snow". Two more fans were turned on, and a "strong wind" blew through the trees. The picture looked so real that it made us feel cold.

The next scene was a complete contrast (对比). The way it was filmed was quite unusual. Pictures in front taken on an island in the Pacific were shown on a glass screen (幕). An actor and actress stood of the scene so that they looked as if they were at the water’s edge on an island. By a simple trick like this, palm trees, sandy beaches, and blue, clear skies had been brought into the studio!

Since it was our turn next, we were left wondering what scene would be prepared for us. For a full three minutes in our lives we would be experiencing the excitement of being film "stars"!

小题1:Who is the author?

A.A cameraman.

B.A film director.

C.A crowd-scene actor.

D.A workman for scene setting.小题2:What made the author feel cold?

A.The heavy snowfall.

B.The man-made scene.

C.The low temperature.

D.The film being shown.小题3:What would happen in the "three minutes" mentioned in the last paragraph?

A.A new scene would be filmed.

B.More stars would act in the film.

C.The author would leave the studio.

D.The next scene would be prepared.

单项选择题