单选题：The expression "adding vital life to years" in the last par

题目分类：卫生类
题目类型：单选题
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题目内容：

The expression "adding vital life to years" in the last paragraph means__________. A．living longer
B．living well
C．living longer and well
D．living at any cost

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答案解析：

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分类：卫生类题型：单选题

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