传染病按照贮存宿主可分为（）。_爱下问搜题

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问题填空题

传染病按照贮存宿主可分为（）。

答案

参考答案：人类传染病、动物源性传染病、土源性传染病、水源性传染病

选择题

—Why was Mrs Smith angry with Jack?
—Because he worked _____ than the others.

A. more carefully
B. worse
C. better
D. more clearly

问答题简答题

简述社会制度因素对人际关系的影响。