题目内容：

People often fall ill because of me.______, they can hardly blame me; it is largely their own______. A tired person may get______, especially when he goes to crowded places with polluted air. A sudden change in______is another factor. In hot summer, people turn on the air-conditioner upon returning home. They will catch a cold easily.

My latest victim(受害者) is an energetic student. After school, he played football hard for two hours. Though______, he still went to the cinema .Then he got back home and took a cold shower immediately. I seized this golden chance to______him. He reacted, trying to______me, but I was already______deep in his throat. He kept sneezing(打喷嚏) and his nose was running.______he put on some warm clothes, it didn’t work, for there were too many of us. Besides, his sore throat kept______him, and he developed a cough to force me and my family out, but______.

The next day he couldn’t go to______. He had lost his appetite and was not as______as before. His mother made him orange juice every few hours for more vitamin C, which would help his______.

For two days he was______by his mother. As he rested more, his defense strengthened and I began to feel the______. I knew I had to______him before long. But I am not the one who gives up easily, and I made every effort to fight back.______, it was my turn to feel______now, for his defense system was starting an all-out attack against me. I became______and finally my time was over.

Do you know what I am?

1.A. Therefore    B. Besides    C. However    D. Then

2.A. business    B. responsibility    C. excuse    D. fault

3.A. punished    B. blamed    C. caught    D. killed

4.A. temperature    B. season    C. place    D. condition

5.A. excited    B. hurt    C. late    D. tired

6.A. injure    B. bother    C. attack    D. destroy

7.A. get on with    B. get rid of    C. put up with    D. take hold of

8.A. reproducing    B. waiting    C. hiding    D. disappearing

9.A. Since    B. Once    C. Whether    D. Although

10.A. reminding    B. upsetting    C. comforting    D. influencing

11.A. escaped    B. succeeded    C. regretted    D. failed

12.A. bed    B. work    C. school    D. hospital

13.A. peaceful    B. afraid    C. active    D. happy

14.A. recovery    B. development    C. study    D. growth

15.A. protected    B. nursed    C. scolded    D. affected

16.A. loss    B. operation    C. pressure    D. movement

17.A. leave    B. catch    C. forget    D. beat

18.A. Uncertainly    B. Unsuccessfully    C. Unusually    D. Unfortunately

19.A. painful    B. disappointed    C. nervous    D. ashamed

20.A. bigger    B. weaker    C. smaller    D. stronger