What example does the professor give of a memes longevity？
A story has been changing since it first appeared in the 1930s.
B. A person remembers a story for many years.
C. A gene is passed on through many generations without changing.
D. A song quickly becomes popular all over the world.
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描述原子在晶体中排列方式的空间框架叫做()
A. 晶胞
B. 晶粒
C. 晶格
D. 晶格常数
简要病史：患者，男，56岁，呕血1天，血压下降l小时，既往有慢性肝病病史。初步诊断：肝硬化食管静脉曲张破裂出血、失血性休克
简要病史：男性，75岁全腹胀伴间断呕吐7天急诊就诊。
平静呼吸时胸（肺）部间接叩诊检查的方法和顺序（须向考官报告叩诊检查结果）（8分）
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