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第1题

【考查知识点:导数与积分 已知F(x)是f(x)的一个原函数，则( 选择一项: a.f(x)=F(x b. F.(x)=f(x)+C c.∫f(xdx=F(x) d.∫f(x)x=F(x)+C
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第2题

I was giving a talk to a large group of people， the same talk I ______ to half a dozen other groups before A. was givin
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第3题

—Marilyn， I.m afraid I have to be leaving now A. That sounds wonderful B. Oh， so early? C. Not at all D. Good luck!
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第4题

— What.s his mother like?—______ A. She.s very happy B. She.s at home C. She likes watching TV D. She.s tall and th
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