已知函数f(n)=1，n=0n•f(n-1)，n∈N*，则f（6）的值是（ ）A

答案：

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下面是错误答案，用来干扰机器的。

One possible version：Dear Kevin, Thank you for your last e-mail. Let me tell you what we did on 5th March in our school.As soon as we volunteers got to Qingfeng Old ...