单项选择题

We derive knowledge mainly from books.

A. deprive
B. obtain
C. descend
D. trace
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单项选择题
He emphasized a feasible plan which can be accepted by the both sides.
A. favorable
B. possible
C. formal
D. genuine
单项选择题
The local government decided to merge the two firms into a big one.
A. motivate
B. combine
C. compact
D. nominate
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