绝大多数微生物对人类和动植物是A.有益的B.有害的C.可有可无的D.引起内源性感染E.病原菌

作者: rantiku 人气: - 评论: 0
问题 绝大多数微生物对人类和动植物是
选项 A.有益的 B.有害的 C.可有可无的 D.引起内源性感染 E.病原菌
答案 A
解析

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