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问题 单项选择题

二重感染是( )

A．多种致病微生物引起的感染
B．多种细菌引起的感染
C．厌氧菌引起的感染
D．结核继发化脓菌引起的感染
E．使用抗生素后，不敏感或耐药菌株引起的感染

答案

参考答案：E

解析： 二重感染指机体在使用抗生素后，敏感菌被抑制，不敏感菌或耐药菌株引起的感染。

选择题

由解放军某研究所研制的小分子团水是航天员专用水。一次饮用125 mL小分子团水可维持6小时正常需水量，如果是普通水，一昼夜正常需水量为2~3 L。下列说法正确的是 [ ]

A．小分子团水的物理性质和普通水不同

B．小分子团水中的水分子停止了运动

C．小分子团水的组成元素和普通水不同

D．小分子团水中的水分子间没有空隙

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完形填空
根据对话内容。选择恰当的句子补全下列对话。(每小题1分．共5分）
A. We've known each other since we were kids.
B. Where is she from?
C. You mean the girl reading a book?
D. What does she look like?
E. Could you introduce me to her?
F. She is always ready to help others.
G. Then let's talk to her when she stops reading.
 
W: Do you know the girl in red under the tree?
M:   小题1:
W: Right. Do you know her?
M : Of course. She's Lily.  小题2:
W: Is she easy to get along with?
M: Yes. She is kind.   小题3:
So she is very popular with the people around her.
W: I want to make friends with her.  小题4:
M: Certainly. But I don't want to disturb her now. She seems to lose herself in the book.
W: OK.  小题5:
M: All right.
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