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【单选题】
卡介苗的性质属于A.
死菌苗
B.
类毒素
C.
抗毒素
D.
减毒活疫苗
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【简答题】Passage 2 Music which is original is individual and personal. That is to say, it can be identified as belonging to a particular composer. It has particular qualities, or a style, which are not copied ...
【单选题】In a telephone conversation, what would you do if you don't undersand certain point?
A.
Pretend you have understood when you haven't.
B.
Feel embarrassed and do not say anything.
C.
Just ignore it.
D.
Ask if you don't understand.
【单选题】Be certain of the number you’re dialing, so as to avoid disturb ing someone unnecessarily. If you do reach a wrong number, it is necessary to say“I’m sorry. I dialed the wrong number.”before hanging u...
A.
annoy
B.
please
C.
know
【简答题】线路平面由（）组成。
【简答题】线路平面由（）（）（）组成。
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