问题
多选题
神经细胞在静息时具有静息电位，受到适宜刺激时可迅速产生能传导的动作电位，这两种电位可通过仪器测量。A、B、C、D均为测量神经纤维静息电位示意图，正确的是
[ ]A．
B．
C．
D．
答案
AC
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神经细胞在静息时具有静息电位，受到适宜刺激时可迅速产生能传导的动作电位，这两种电位可通过仪器测量。A、B、C、D均为测量神经纤维静息电位示意图，正确的是
[ ]A．
B．
C．
D．
AC
阅读短文, 根据短文内容从下面方框内的七个选项中，选择五个还原到原文中，使短文意思通顺、结构完整。（每小题2分） Americans think much about time. 小题1: As children，they are taught to be on time to go to school, to work and to do everything. 小题2: When a person is dying, they say he is living on a borrowed time. Time is money. Time is knowledge. 小题3: A working American has to work hard for eight hours a day or forty hours a week. This is the working time. In his free time, he also works hard for more money. 小题4: In the street you can hardly see a man walking slowly. They walk very fast. In fact, they are running. 小题5: But sometimes they also hate time, because they become servant (佣人) of the clock.
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