问题 单项选择题

骨与关节摄影条件的组合,正确的是

A.焦点——≤0.1mm
B.摄影距离——100~120cm
C.屏/片组合——度400
D.曝光时间——>1.0s
E.管电压——120kV

答案

参考答案:B

解析:6mm;屏/片组合——度200;曝光时间——<200ms;管电压 55~65kV;所以只有B正确。

阅读理解

阅读理解。

    Mrs. Young was eighty. Her husband died when she was fifty-three and he left her an old car he had had

for six years. She learned to drive and loved it very much. She liked driving very fast, and was proud of the

fact that she had never been caught for a driving offense.

    Then one day she nearly lost her record. A police car followed her and the policeman in it saw her pass a

red light without stopping and she was taken before a judge. The man looked at her and said that she was too

old to drive a car, and the reason why she hadn't stopped at the red light was most probably that her eyes had

become weak because of her old age, so that she had simply not seen it.

    When the judge had finished what he was saying, Mrs. Young opened her handbag she was carrying and

took out her sewing. Without saying a word, she chose a needle (针) with a very small eye, and threaded (穿

线) it at her first try.

    When she had finished it, she took the thread out of the needle and handed both the needle and the thread

to the judge, saying, "Now it's your turn. I suppose you drive a car, and that your eyesight is good."

    The judge took the needle and he tried to thread it. After trying six times, he had still not done it. At last he

had to set the old woman free and her record remained unbroken.

1. Mrs. Young's car was _____ years old. [ ]

A.16

B. 33

C. 40

D. 53

2. As _____, she was taken before a judge. [ ]

A. Mrs. Young's car was too old.

B. Mrs. Young hadn't made way for the police car

C. Mrs. Young was rude to the policeman.

D. Mrs. Young hadn't stopped at the red light

3. Mrs. Young threaded before the judge in order to _____. [ ]

A. prove that her eyesight was still good

B. get the man into trouble

C. do some sewing

D. wait for the man's judgment

4. The judge set Mrs. Young free because _____. [ ]

A. she was very old

B. she could thread

C. he thought her sight good

D. he admired her

填空题