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  3. The prevailing wind is the wind direction most often observed during a given time period. Wind speed is the rate at which the ai

The prevailing wind is the wind direction most often observed during a given time period. Wind speed is the rate at which the ai

admin2011-05-29  48
问题 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.
选项 A、motionless
B、massive
C、flexible
D、noticeable
答案A
解析 本题中，stationary的意思是“固定的”。A项“motionless不动的”符合题意，如：The cat sat motionless．(这只猫蹲着不动。)其他三项“massive厚重的；flexible灵活的；noticeable显而易见的”都不正确。
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