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根据以下资料，回答下列问题。
新中国成立后，经过60年特别是改革开放以来的建设，我国公共卫生体系初步建立，卫生服务能力明显增强。2008年全国共有卫生机构27．8万个，比1949年增加约75倍；卫生技术人员为503万人，比1949年增加9．0倍；医院和卫生院床位数为374．8万张，比1949年增加45．9倍；每千人口医院、卫生院床位数为2．8张，远高于1949年0．15张的水平。

1949—2008年，我国卫生机构平均每年约增加：
A.4397个
B.4578个
C.4655个
D.4736个

A.8万个，比1949年增加约75倍；卫生技术人员为503万人，比1949年增加9．0倍；医院和卫生院床位数为374．8万张，比1949年增加45．9倍；每千人口医院、卫生院床位数为2．8张，远高于1949年0．15张的水平。
B.shangxuebA.cn/images/ct_ggxz2010_gdxdataanalysis_00111(200912).jpg'>
1949—2008年，我国卫生机构平均每年约增加：
A.4397个
B.4578个
C.4655个

【参考答案】

C
解析：1949年我国卫生机构数为3670个，2008年为278337个，平均每年增长(278337-3670......

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