下列哪项属于安全性评价第四阶段的试验()。 A.致突变试验 B.慢性毒性试验 C.生 发布时间:2017-05-24 15:00 │ 来源:www.tikuol.com 题型:多项选择题 问题: 下列哪项属于安全性评价第四阶段的试验()。A.致突变试验B.慢性毒性试验C.生殖发育毒性试验D.代谢试验E.致癌试验
题型:多项选择题 用am,is或are填空。1.That's my father and this my mother. They my parents.2.This is my friend and that my sister.3. —_ she your sister? —Yes.she .4.— he your brother? —No. He my friend.5.— Guo Peng your brother? —Yes, he .6. I his friend and he my friend.7. — you Jack's brother? —No, I'm not.8.These my parents and those my grandparents. 查看答案