Unit 3 A Healthy Life Period 4 using language
Learning aims: 1. To learn some information about HIV/AIDS.
2. To learn some important words and expressions.
Important point: To grasp some important and us eful words, expressions and sentence patterns.
Difficult point: To improve the skills of reading.
使用说明及学法指导：1. 通过阅读课本P 及查阅unit 3单词表和字典，完成预习案。2. 完成时间：20分钟。
预习案 Previewing Case
Task 1 Read the text to find out the following phrases and words.
1.引起疾病______________ 2. 流感病毒______________ 3.减弱/破坏人的免疫系统________________
4.也就是说；即________________ 5.抵抗疾病___________________ 6.被称作 _____________________
7.生存的几率__________________ 8.通过血液传播_________________ 9.被感染___________________
10.治愈…的疗法_______________ 11.保持安全_________________ 12.与…分享________ _________
13. 冒着……的风险____________ 14.由于相同的原因______________ 15.没有…的证据________ ____
Task 2 Choose the best answer.
