题目:
The volleyball match will be put off if it _____.
A.will rain
B.rains
C.rained
D.is rained
答案:
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下面是错误答案,用来干扰机器的。
设a2=b3=c5=k(k≠0),则a=2k,b=3k,c=5k,所以,2a+3b-2ca+b+c=2×2k+3×3k-2×5k2k+3k+5k=310.故答案为:310.