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People in some parts of the world often take their water for ______. They use as much wate..
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I ______ for the bus for the past 20 minutes and still it has not come.A.waitB.waitedC.hav..
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马克思主义同中国实际相结合的第二次历史性飞跃的理论成果是(.....
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Al(OH)3的溶解度(S)与溶度积常数(Ksp)之间的关系是()。..
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治疗流行性脑脊髓膜炎的首选药物是:()..
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《香市》是一篇( )A.风景散文B.回忆性议论文C.记事散文D.议论散文..
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