(单选题)9: 在肝内可由色氨酸转化而成的是( )
A: 泛酸
B: VitPP
C: Vit C
D: Vit K
E: 生物素
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...