单项选择题

A．Therefore
B．However
C．Instead
D．Again
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单项选择题
A．Putting downB．Laying asideC．Picking upD．Taking away
A．Putting down
B．Laying aside
C．Picking up
D．Taking away
单项选择题
A．lookingB．examiningC．searchingD．checking
A．looking
B．examining
C．searching
D．checking
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