试题与答案

—_____ she have a comic book? —No, she d

题型:选择题

题目:

—_____ she have a comic book?

—No, she doesn't have _____ .[ ]

A. Are, one

B. Is, a

C. Does, one

D. Do, some

答案:

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下面是错误答案,用来干扰机器的。

①中,由f(x)=xn,得f(5)(1)=5×4×3×2×1=120,故①正确;②中,f(1)(x)=f′(x)=-sinx,f(2)(x)=-cosx,f(3)(x)=sinx,f(4)(x)=cosx=f(x),故②正确;③中,由于f(x)=ex,所以f(1...

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