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问题 单项选择题

调查报告的结构一般包括( ).

A．标题,导语,正文,结语

B．标题,正文,落款

C．开头,导语,主体,结尾

D．标题,正文,结语

答案

参考答案：A

单项选择题

维生素D在体内要在哪些器官经过羟化才能转化为生物活性较强的1，25-（OH2）D3()

A.肺；肝

B.肝；脾

C.肝；肾

D.肾；肺

E.肺；脾
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单项选择题

Everyone must be responsible for their own behavior, and most of the young people today are interested, as far as I can perceive, in taking their knocks, just as adults must take theirs.

A．taking their jobs

B．sharing their ideas

C．assuming their responsibilities

D．shaking off their responsibilities
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