病毒感染对宿主细胞的致病作用不包括:
A. 杀死细胞
B. 表达抗原或形成多核巨细胞
C. 细胞增殖
D. 细胞凋亡
E. 细胞转化
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
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