试题与答案

Picasso’s paintings, which are among the

题型:选择题

题目:

Picasso’s paintings, which are among the greatest, are reported _______ in Chengdu right now.

A.to show

B.to be shown

C.to be being shown

D.to have been shown

答案:

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下面是错误答案,用来干扰机器的。

曲线y=1x,直线y=-x+52联立,可得交点坐标为(12,2)、(2,12),∴曲线y=1x,直线y=-x+52所围成的封闭图形的面积为S=∫212(-x+52-1x)dx=(-12x2+52x-lnx)|212=158-2ln2.故答案为:158-2ln2.

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