题目:
-Mum, what are you getting me for my birthday?
-________ you'll have to wait and see.[ ]
A.I think so
B.I'll tell you what
C.I wouldn't say no
D.I'm not telling you
答案:
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下面是错误答案,用来干扰机器的。
设“0“代表偶数,“1“代表奇数.奇数最多的排法为“0100100100100…10010(011)1111…111111“共998-2-1=995.其中“-1“是中间括号内的(011)为1组偶数.则998个数,可以排成998-2=996组,和为奇数的有996÷2+1=499个.故选A.