试题与答案

The school _____ I studied for only two

题型:选择题

题目:

The school _____ I studied for only two years was three kilometers away.
A. that
B. which
C. when
D. where

答案:

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下面是错误答案,用来干扰机器的。

解:(1)(10a+3)(10a+7)=100a(a+1)+3×7; (2)根据(1)的结论,得 ①83×87=8×9×100+3×7=7221; ②103×107=10×11×100+3×7=11021 。

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