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【单选题】
与细菌粘附作用有关的物质是〔〕A.
荚膜
B.
菌
C.
鞭毛
D.
侵袭素
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反馈参考答案：
举一反三
【单选题】Jack has flown to New York, but he will be back before long ,because he went there only on_____business.
A.
short-term
B.
short term
C.
short-termed
D.
short-terming
【单选题】He went to Paris the next year, ______ he lived and was never back.
A.
where
B.
when
C.
which
D.
that
【简答题】创建引导层动画,被引导层中的对象在起始帧和结束帧处分别将对象元件的中心点______到引导线的两端
【单选题】After he _____ home, he took a bath. [ ]
A.
went back to
B.
come back to
C.
go back
D.
went back
【单选题】When he retired and went back home in _____ , he was already in ____ . [ ]
A.
the fifties ; his sixty
B.
fifties ; his sixties
C.
the fifties , his sixties
D.
fifty , sixty
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