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【多选题】
下面是传染病的共同特征的是( )A.
在一定环境条件下由病原微生物与机体相互作用所引起的
B.
具有传染性和流行性
C.
被感染的机体发生特异性反应,耐过动物能获得特异性免疫。
D.
具有特征性的临床表现
E.
具有明显的流行规律
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反馈参考答案：
举一反三
【单选题】You could be right,but I still feel that work experience is more important.
A.
简单句
B.
并列复杂句
C.
并列句
D.
复杂句
【单选题】You could pay half of the rent right now, while the ______ must be paid by the end of this month.
A.
remainder
B.
remains
C.
remnant
D.
reservation
【单选题】You could be right, but I still feel that work experience is more important.
A.
简单句
B.
并列句
C.
并列复杂句
D.
复杂句
【单选题】—I have to be off right now. —What a pity! I _______ you could stay a little longer with us. [ ]
A.
think
B.
am thinking
C.
thought
【单选题】—Hey ,it’s you, Jackie! I didn’t think you could be here． —A big surprise ,right? I _______ for you all the afternoon．
A.
have waited
B.
was waiting
C.
have been waiting
D.
waited
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