单选题：A disease-producing B health-improving　　C life-threateningD

题目内容：

A disease-producing
B health-improving　　
C life-threatening
D error-correcting

参考答案：

答案解析：

宏观地说，学问就好比叠罗汉，总是一代代站在前人的肩膀上成长起来。将原始资料和典籍开放，便于公众查阅，有利于一个国家整体学

宏观地说，学问就好比叠罗汉，总是一代代站在前人的肩膀上成长起来。将原始资料和典籍开放，便于公众查阅，有利于一个国家整体学术气氛的活跃、国民素质的提高。这些文献，

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