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第1题

3. I hope that they____this challenge. A.stay up B. take up C.weigh up. D.set up
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第2题

2.The government is at a stage_____it is willing to talk to almost anyone. A. where B. which C. that D.when
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第3题

1._____some degree,both sides reach an agreement,from which both sides benefit a lot. A.In B.To C. About D.From
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第4题

1 【计算题】 设随机变量X与Y相互独立，且 则P(X=Y)= ____
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