(单选题)16: 根据元素组成的区别，从下列氨基酸中排除一种氨基酸( )
A: 组氨酸
B: 色氨酸
C: 胱氨酸
D: 精氨酸
E: 脯氨酸
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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