(单选题)71: 属于醛糖的是?( )
A: 丙酮
B: 丙酮酸
C: 甘油酸
D: 甘油醛
E: 二羟基丙酮
1.(text)I.VocabularySkills（2points） Completethefollowingstatementsbychoosingth...
1.(完形填空题)1．ListentotheconversationanddecidewhetherthefollowingisT(true)orF...
1.(完形填空题)1．ListentotheconversationanddecidewhetherthefollowingisT(true)orF...
1.(完形填空题)1．ListentotheconversationanddecidewhetherthefollowingisTrue(T)orF...
1.(完形填空题)1．ListentotheconversationanddecidewhetherthefollowingisTrue(T)orF...
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