正常细胞膜内K+浓度约为膜外K+浓度的()
A.12倍
B.30倍
C.50倍
D.80倍
E.90倍
参考答案:B
Though he doesn't achieve his goals, he is not a failure.___, he is remembered as a true hero. [ ]
A. In particular
B. On the contrary
C. Generally speaking
D. To be honest
毛 * * 思想形成和发展的实践基础是()
A.中国工人运动的发展
B.马克思列宁主义在中国的传播
C.中 * * 党领导的人民革命运动的发展
D.20世纪前中期中国政局的变动