(单选题)27: 薄壁细胞的主要特征是 （ ）
A: 死细胞
B: 具发达的胞间隙
C: 具次生壁加厚
D: 具初生壁加厚
E: 无液泡
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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