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问题
选择题
研究响尾蛇捕食老鼠的实验中需要几只死老鼠[ ]
A.一只
B.两只
C.三只
D.数量不限
答案
答案:
B
选择题
Although I haven't seen my uncle for years, I 'm sure I'll _____ him when he gets off the plane.
A. know
B. recognize
C. see
D. watch
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判断题
质量成本是指企业为了保证满意的质量而支出的一切费用()
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