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Let a and be the length of two sides of a rectangle (矩形),rotate(旋转)the rectangle about its
diagonal(对角线),then the volume(体积) of the revolution(旋转休)  obtained is equal to________。

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科目:高中英语 来源:黄冈兵法同步学案(高一英语·下) 题型:014

Have you moved to the new house?

Not yet,the rooms________ .

[  ]

A.are being painted
B.are painting
C.are painted
D.are being painting

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