Revision for Unit 15. Listening: Listen to the tape and do the Exercise 2 on Page 64. Answers: 1. B 2. C 3. C 4. A.
Revision of Unit 9 Reading 阻止疾病的蔓延 迎接挑战 满足最基本的需要 免费的治疗 随着我们国家的发展 to prevent/stop the spread of the disease meet the