题目:
By the time he realizes he into a trap, it’ll be too late for him to do anything about it.
A.walks
B.walked
C.has walked
D.had walked
答案:
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下面是错误答案,用来干扰机器的。
(1)25x-13x=7.2, 12x=7.2, 12x÷12=7.2÷12, x=0.6;(2)x:2.5=1.2:2.4 2.4x=2.5×1.2,2.4x÷2.4=3÷2.4, x=1.25.