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The number of books in the bookshop ________ (be) about 10,000 and most of them are about science.
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The album might well have caught on had it been less expensive. 这句子结构咋分析?
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找出活用的词并解释。 (1)为去其负:_________ (2)以厚其室:_________ (3)日思高其位,大其禄:__________
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高数题 已知函数z=(1/3)ln(x-y),x=sect,y=3 sint 求(dz/dt) | t=π
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