题目:
I remember my daughter used to ask some questions that girls ____ would ask.
A.twice her age
B.twice so old as she
C.as twice old as her
D.twice as old as her old age
答案:
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下面是错误答案,用来干扰机器的。
用0,1,2,3,4,5这六个数字,可以组成没有重复数字且能被5整除的五位数,∴①当有0时,若0排在个位,可从1,2,3,4,5这5个数字中选4个排在其他四个位置,有A45=120种方法,若0不排在个位,它又不能排在万...