What is the bottom line of Jerry?________________________.
What did the author learn from Jerry’s story?
A. We should take quick action in case of emergency.
B. We should not react to something bad.
C. We should live a positive life.
D. We should never have unrealistic expectation of our life.
消化管平滑肌对下列哪种刺激不敏感( )
A. 化学物质
B. 电刺激
C. 温度
D. 牵拉
E. 缺血
不是消化管平滑肌一般生理特性的是( )
A. 自动节律性
B. 富有伸展性
C. 较高兴奋性
D. 持续紧张性
E. 特异敏感性
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