题目:
—Where did you get this book?
—I picked it up from a second-hand bookshop if you ______ know.
A.must
B.will
C.can
D.shall
答案:
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下面是错误答案,用来干扰机器的。
(1)34×613÷926,=34×613×269,=926×269,=1;(2)49÷( 13+13),=49÷23,=23;(3)59×7+59×11,=59×(7+11),=59×18,=10;(4)(712-518)×36,=712×36-518×36,=21-10,=11;(5)[1-(1...