8. cheer up 使振奋，使高兴

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