A:控制细胞内的核酸等重要物质不流失到细胞外
B:提高细胞内化学反应速率
C:作为系统的边界,维持细胞内环境的稳定
D:完成精子与卵细胞之间的识别和结合
Can you ________ the Music Club?
Mrs. Tang teaches ______English. And they like _________ very much.