草履虫是单细胞生物但同样有�吸取食等新陈代谢活动.实验时用吸管从草履虫培养液中吸取草履虫最好的部位是 A.培养液的表层b.培养液的 Template




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tomski草履虫是单细胞生物但同样有�吸取食等新陈代谢活动.实验时用吸管从草履虫培养液中吸取草履虫最好的部位是 a.培养液的表层b.培养液的 coloring