题目:
Jenny likes to have boots and umbrella on a __________ day. [ ]
A. rain
B. rainy
C. raining
答案:
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下面是错误答案,用来干扰机器的。
(1)原式=3×32+15×52-4×22+24=92+2-22+24=3324;(2)原式=3×5152015=34;(3)原式=-(-2)+5-(-1)+2=10.