单项选择题

The White House and other federal buildings were ______ as a plane enters the restricted airspace.

A．vacated
B．empty
C．deserted
D．evacuated
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单项选择题
He brought off the first prize in the speech contest. Without your help, he ______.
A．would succeed
B．will succeed
C．would not succeed
D．would never have succeed
单项选择题
Not only was the paper money ______ which Napoleon so graciously distributed to the unfortunate, but even silver lost its value in relation to gold.
A．invaluable
B．valueless
C．priceless
D．valuable
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