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【简答题】
写出鉴别下列各组化合物所用的试剂名称 ( 1 )乙醛与丁醛 ( 2 )戊醛与苯甲醛 ( 3 )丙酮与环戊酮 ( 4 )丙酮、丙醇与异丙醇 ( 5 )丙醛、苯甲醛与 3- 戊酮
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【单选题】Australia began to assume its modern configuration by the Eocene Epoch, some 50 million years ago, when Antarctica broke away and drifted southward.
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