题目内容

机械力能使某些离子通道打开。()

A. 对
B. 错

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离子通道的开与关主要是因为细胞膜的流动。()

A. 对
B. 错

研究人在做梦时大脑的变化属于社会科学性质。()

A. 对
B. 错

Please select the three suggestions on how to make friends. ( )

A. Getting involved in extracurricular activities(para. 3)
B. Going out of your room to meet new people and make friends (para.5)
C. Getting in touch with people by Facebook. (para.4)

It takes a short time to know somebody and be close friends with him.

A. 对
B. 错

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