《能静居日记》的作者是（）。 A.赵烈文 B.覃梓珊 C.刘坤一 D.刘义坤

—What is the main cause of the accident?

—Driving _____.[ ]

A. careful        

B. carefully        

C. careless        

D. carelessly

D

In China, some radio broadcasting stations use hotlines to encourage listeners to take part in the talk shows.

That is a good idea. Yes, the fact is that some people do nothing but break the whole programme.

Some people know little about the topic under discussion. Sometimes they do not even know what the host is talking about. So the host has to tell the caller what the show is about. Usually the caller will ask a few questions which express his hope and show his ignorance(无知). Then the host has to answer and explain ---how silly it is! It wastes a lot of time.

It seems that some people phone the hotlines for fun. They just want to let the listeners hear them. They do not care what the topic is, whether they themselves are interested in the topic or how silly they appear to be.

It is necessary for radio stations to improve the hotline programmes. In my opinion, if a caller does not know what is going on, the operator should not let the caller take part in it.

47. The underlined sentence “some people do nothing but break the whole programme” may tell us that _____

A. radio stations use hotlines in a wrong way

B. there are problems to solve in the use of hotlines by some radio broadcasting stations

C. the use of hotlines by some radio broadcasting stations is a good idea

D. some people have unclear thoughts

48. The underlined word“operator” in the last paragraph refers to_____

A. 话务员        B. 听众        C. 医生         D. 主持人

金属与石材幕墙面板安装说法，符合规范要求的是( )。

A．石材幕墙的面板采用钢销式连接，单块石板面积不宜大于1.0m²

B．石材幕墙的石板，厚度不应小于250mm

C．金属与石材幕墙板面嵌缝应采用中性硅酮结构密封胶

D．不锈钢挂件的厚度不宜小于3.0m，铝合金挂件的厚度不宜小于4.0mm

E．石板与不锈钢或铝合金挂件间应用环氧胶粘剂粘结

多元智能理论是由（）提出来的。

A、戈尔丁·梅多

B、乔姆斯基

C、霍华德·加德纳

D、思拉夫

1636.5-1644.0MHz是海事卫星通信（）使用的频率

A、星对船

B、船对星

C、岸对星

D、星对岸