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王老师:19139051760(拨打)
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第1题

. 由曲线 -χcosχ-sinχ+c及直线 -χcosχ+sinχ+C所围成图形面积等于（ ）(本题1.0分) A、∫1nχdχ= B、 χ1nχ-χ+C C、χ1nχ+χ+C D、-χ1nχ-χ+C
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第2题

It goes without saying that a real sportsman will never dream ______ cheating in a game A. to B. for C. with D.
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第3题

Space travel is dangerous and the astronauts in space have to ______ many discomforts (不适) in their rockets. A. distur
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第4题

Please remember that it is rude to ______ people when they are speaking A. interfere B. involve C. investigate D
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