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 loss of lusitania and so many of its passengers, including 128 U.S. citizens, aroused a wave of indignation in the United States（）

A. perplexity
B. wrath
C. distress
D. skepticism
单项选择题
Peter was seen crying when he came out of the office. We can deduce that he must have been punished（）

A. confer
B. refer
C. prefer
D. infer
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