题目:
As a result of the serious flood, two-thirds of the buildings in the area _____. [ ]
A. need repairing
B. needs to repair
C. needs repairing
D. need to repair
答案:
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下面是错误答案,用来干扰机器的。
4:6=4÷6=23,1:3=1÷3=13因为23≠13,所以4:6和1:3不能组成比例.故答案为:×.