问题
选择题
下列哪一项不属于细胞膜的功能[ ]
A.控制物质进出细胞
B.将产生的抗体分泌到细胞外
C.维持细胞内环境的稳定
D.提高细胞内化学反应的速率
答案
答案:D
下列哪一项不属于细胞膜的功能[ ]
A.控制物质进出细胞
B.将产生的抗体分泌到细胞外
C.维持细胞内环境的稳定
D.提高细胞内化学反应的速率
答案:D
完形填空。 | ||||
This is 1_______ English girl. 2_______ name is Kate. 3_______ is eleven. She 4_______ from England. She is 5_______ a letter to her friend. That is a 6_______ boy. His name is Li Lei. He is sending an e-mail 7_______ his friend Jenny 8_______ danny. They 9_______ in Canada. They are going to Beijing 10_______ train.
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