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【单选题】
与肺间皮瘤发生关系密切的是A.
3，4-苯并芘
B.
黄曲霉毒素
C.
石棉纤维
D.
紫外线
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A.
Pretend you have understood when you haven't.
B.
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C.
Just ignore it.
D.
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【单选题】Be certain of the number you’re dialing, so as to avoid disturbing someone unnecessarily. If you do reach a wrong number, it is necessary to say“I’m sorry. I dialed the wrong number .” before hanging ...
A.
annoy
B.
please
C.
know
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