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问题 选择题

下列元素中，在蛋白质中含有，但是糖类和脂肪中不含有，这种元素是（　　）

A．H

B．C

C．N

D．O

答案

糖类、油脂都是由C、H、O三种元素组成，蛋白质是由C、H、O、N四种元素组成，这种元素是N元素．

故选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] can be [B] must[C] must be
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单项选择题

对业务工作方案的批准应该：

A．不能晚于业务工作的结论。
B．业务客户或指定人员。
C．在某些情况下获取有关方面的口头同意。
D．董事会书面批准。
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