(单选题)60: 细胞内液的主要阴离子是??( )
A: HCO3-
B: Cl-
C: HPO42-
D: PO43-
E: 蛋白质
1.(text)I.VocabularySkills(2points)Whichofthewordsbelowcontainaprefixwithanega...
1.(匹配题)I.Vocabularyskills(3points) Lookatthecolumnsbelow.Matcheachvocabular...
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...