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【简答题】
设平面图形由曲线y=x 2 、直线y=2-x及x轴所围成，求这个平面图形绕x轴旋转所产生的旋转体的体积V．
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【单选题】—____ my book. —____ your book. [ ]
A.
This is, That's
B.
This's, That's
C.
This is, It's
D.
This's, That is
【简答题】A few years ago it was fashionable to speak of the generation gap in America, adivision between young people and their elders. Parents complained thatchildren did not show them proper respect and obed...
【简答题】B An old farmer lived with his young grandson. Each morning Grandpa was always up early to read. One day the grandson asked, “ Grandpa! What good does reading do ? ” G rand pa quietly turned from putt...
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