7. free from 不受……影响，没有……

6. lack of 缺乏

5. fear of disease 怕疾病

4. suffer from 患……病

3. break down 损坏

2. get tested for 测试

1. be / become infected with 受……感染

34. choke v. 窒息，哽住，使窒息

　　 ☆重点短语☆

33. ambulance n. 救护车

32. bandage　 n. 包扎带