问题 单项选择题

关于切线效果,错误的说法是(  )

A.被照体局部的边缘部分与X线束垂直时形成

B.胸片上锁骨伴随阴影是切线效果

C.胸片上女性 * * 阴影是切线效果 

D.胸片上叶间裂显示的线状阴影是切线效果

E.摄影时要充分注意切线效果的临床意义

答案

参考答案:A

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阅读理解

Different countries and different people have different manners. We must find out their customs, so that they will not think us ill-mannered. Here are some examples of the things that a well-mannered person does or does not do.

If you visit a Chinese family you should knock at the door first. When the door opens, you’ll not move before the host says “Come in, please!”. After you enter the room, you wouldn’t sit down until the host asks you to take a seat. When a cup of tea is put on a tea-table before you or sent to your hand, you’ll say “Thank you” and receive it with your two hands, not one hand, or they’ll think you are ill-mannered.

Before entering a house in Japan, it is good manners to take off your shoes. In European countries, even though shoes sometimes become very dirty, this is not done. In a Malay (马来西亚的) house, a guest never finishes the food on the table. He leaves a little to show that he has had enough. In England, a guest always finishes a drink or the food to show that he has enjoyed it. This will make the host, especially (尤其) the hostess pleased.

小题1:In China, when the host opens the door, ____ before he says “Come in, please!”

A.you won’t leave

B.you won’t walk

C.you won’t stand in front of him

D.you won’t get in小题2: In European countries,____ when you get into a house.

A.you needn’t take off your shoes

B.you must take off your dirty shoes

C.you are not allowed to wear dirty shoes

D.you should put on clean shoes小题3:In a Malay house, a guest leaves a little food to show that ____.

A.he has enjoyed it

B.he is quite full

C.he is not hungry at all

D.he needs some drink