2016-2017学年 人教版 选修6 unit3 A healthy life using language 课件 (8)
2016-2017学年 人教版 选修6 unit3 A healthy life using language 课件 (8)第5页

What is HIV? 2. What is a person’s immune system? 3. What is AIDS? 4. How does it spread? 5. To avoid AIDS, what should we do or not do?

Careful-reading (Part1-2) Read the text carefully and then answer the following questions: