题目

 I have no dreams       to have a happy life.    A. rather than   B. more than   C. other than   D. less than 答案:C等比数列{an}中,a1=317,q=-12,记f(n)=a1•a2…an,则当f(n)最大时,n的值为(  )A.7B.8C.9D.10
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