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问题 单项选择题

患者男性，16岁，因持续高热1周来诊，临床怀疑伤寒沙门菌感染。治疗首选下列哪种药物（）

A.氯霉素

B.环丙沙星

C.头孢曲松

D.多西环素

E.头孢呋辛

答案

参考答案：C

单项选择题

A young man was going to join the army (军队) and had to (41) a medical examination. The doctor was sitting at a desk when he came in. He said to the man, "Take your coat and shirt off and (42) on that chair.
The young man did so. The doctor looked at him for a moment without (43) up from his chair and then said, "All right. Put your clothes on again.
"But you haven’t examined me at ail!" the young man said in (44) .
"There is no need to do so," the doctor said with a (45) .
"When I (46) you to take your coat and shirt off, you heard me all right, so there is nothing wrong with your (47) . You saw the chair, so your eyes are (48) . You could take your clothes off and sit on the chair, so you must be in good health. And you understand what I told you to do and did it without a (49) , so you (50) healthy enough for the army.\

[A] told[B] tell[C] will tell
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选择题

将一个五边形改成与它相似的五边形，如果面积扩大为原来的9倍，那么周长扩大为原来的（　　）

A．9倍

B．3倍

C．81倍

D．18倍
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