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【判断题】
如果两个空间之间存在同胚,那么这两个空间就称为同胚的,从拓扑学的观点来看,两个空间是相同的A.
正确
B.
错误
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举一反三
【单选题】It's too early to predict the ________ of the meeting.
A.
outlet
B.
outbreak
C.
outset
D.
outcome
【单选题】There is no need _______ and it’s no use __________ there too early.
A.
to rush; arriving
B.
to worry; to arrive
C.
worrying; arriving
D.
to rush; to arrive
【单选题】It’s too late. Go to bed right away. Forget you need to get up as early as you can ______ the early train?
A.
catch
B.
catching
C.
caught
D.
to catch
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