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Both the kids and their parents () English I think. I know it from their accent.A...
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Our house is about a mile from the railway station and there are not many houses ()...
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已知f(x y)=x2+y2-xytanx/y 试求:f(tx ty)..
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-How was the journey to London?--__________.A. It went very wellB. It was a nine-hour p..
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某厂生产某产品 其固定成本为2000元 每生产一吨产品的成本.....
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成人胸外按压的频率为60-100次/分。()..
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