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【单选题】
个体发展潜伏期的快乐中心在A.
生殖器
B.
口部
C.
外界环境
D.
肛门
E.
直肠
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反馈参考答案：
举一反三
【单选题】______ has already been pointed out, only by correcting mistakes, can you make progress.
A.
It
B.
As
C.
That
D.
What
【单选题】-Johnson, your father has gone out without this umbrella. Well ,take it easy. he comes back for it
A.
It is long before that
B.
It won,t be long since
C.
It will be long before
D.
It won,t be long before
【单选题】The air has leaked out of this football. Could you get it________up? [ ]
A.
blow
B.
blowing
C.
blown
D.
to blow
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