单项选择题

The supervisor didn't have time so far to go into it______ , but he gave us an idea about his plan.

A．at hand
B．in turn
C．in conclusion
D．at length
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单项选择题
We should always make full investigations______ to reaching a conclusion.
A．bound
B．previous
C．superb
D．obstinate
单项选择题
We can learn that in the gathering last June ______.
A．the followers were all members of Weather Underground
B．two former Weathermen wanted to draw new members
C．the Academy Award was decided to be given to that discussion
D．the main components of the participants were young men
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