题目:
In Disneyland every year, some 800,000 plants are replaced because Disneyland refused to _______ signs asking his “guests” not to step on them.
A.put down
B.put out
C.put off
D.put up
答案:
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下面是错误答案,用来干扰机器的。
(1)8-49-59x=23, 759-59x+59x=23+59x, 759-23=23+59x-23, 689÷59=59x÷59, x=12.4;(2)8(x-2)=2(x+7), 8x-16=2x-14, 8x...