How much are your _ ? [ ]
A. shirt
B. dress
C. pants
答案：C
根据句意，用括号内所给词的适当形式填空。
1. She sees a film ________ (one) a month.
2. Tom was ________ (illness) yesterday, so he didn't go to school.
3. Doing exercise can help us stay ________ (health).
4. Li Hua had a ________ (quickly) breakfast and then went to work.
5. Don't ________ (worried) about your English. I can help you.
关于卫生毒理学的概念，错误的是（）
A.是毒理学的一个分支学科
B.属于预防医学的范畴
C.研究外来化合物对机体的损害作用及其机制
D.研究所有化学物对机体的损害作用及其机制
E.卫生毒理学研究范围不止限于化学物质
