单项选择题

The prevailing wind is the wind direction most often observed during a given time period. Wind speed is the rate at which the air moves past a stationary object.

A．motionless
B．massive
C．flexible
D．noticeable
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单项选择题
The Second Hague Disarmament Conference of 1907 was marked more by discord than discourse, a sign of the deteriorating world situation.
A．facilitating
B．upgrading
C．justifying
D．worsening
单项选择题
It was a real ______ when Susan came back from her vacation and told us she had married a local waiter.
A．comfort
B．shock
C．attack
D．impact
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