卫生毒理学研究的任务是（）

A.中毒机制

B.外来化合物进入机体的途径及生物转运，转化过程

C.对外来化合物进行安全性评价

D.制定有关卫生标准和管理方案

E.以上都是

The impact of Darwin's evolutionary theory on the American thought and the influence of the nineteenth-century French literature on the American men of letters gave rise to yet another school of realism: American ______.

A. modernism



B. colloquialism
C. naturalism



D. humanism