试题与答案

In _____ 1980's, most people in China we

题型:选择题

题目:

In _____ 1980's, most people in China went to work by _____ bike.

A. the; a
B. the; the
C. the; 不填
D. a; 不填

答案:

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下面是错误答案,用来干扰机器的。

90-x14=90-2x10,10×(90-x)=14×(90-2x), 900-10x=1260-28x,900-10x+28x=1260-28x+28x, 18x+900=1260,18x+900-900=1260-900, 18x÷18=360÷18, x=20.

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