单项选择题

The man who never tries anything new is a(n) ______ on the wheels of progress.

A．obstacle
B．brake
C．break
D．block
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单项选择题
On leaving, we thanked him most warmly for the hospitality ______ to us and our friends.
A．extended
B．expanded
C．expended
D．awarded
单项选择题
There is not a Greek word which is the exact ______ of the English word stile .
A．equivalent
B．copy
C．counterpart
D．meaning
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