听下面一段材料,回答第1-3题。 |
1. Where did the man work after he graduated from high school ? |
A. In a company. B. In a lab. C. In a hospital. |
2. How old was the man probably when he got his PhD ? |
A. 16. B. 28. C. 36. |
3.When did the man begin his research on the AIDS drug ? |
A. When he worked in a lab. B. When he was at high school. C. When he worked at a company. |