26. _______ the lack of water and food, the homeless have to deal with the cold winter.

A. As well　　　　　　　 B. In spite of 　　　　　　　 C. Apart from　　　　 　　D. In danger of

25. The teacher was not _______ for the boy's death. After all, no one could have predicted that accident.

A. blaming　　 　　 　　　　　 B. to be blamed 　　　　　　 C. blamed　　　　　　　　 D. to blame

24. Hangzhou is famous for its beautiful _______, that is, it is a good place for people to live in.

A. conditions　　　　　　 B. surroundings　　　　　　　 C. situation　　　　　　 D. production　

23. Jack catches a bad cold at ______ the same time each year, which is rather strange.

A. privately　　　　　　 B. roughly　　　　　　　　　　　 C. constantly　　　　　　 D. instantly

22. All of us were against the suggestion _______by Lily, because we didn't have enough money to carry it out.

A. put forward　　　 B. being put forward　　　　　　　　 C. putting forward　　 　D. was put forward

第一节. 单项选择(共15小题；每小题1分，满分15分)

从A.B.C.D四个选项中，选出可以填入空白处的最佳选项。

21.Electric trains have taken_______ place of stream trains in _______ Britain.

A. a;不填　　 B. the; a　　　 C. 不填；a　　 D. the; 不填

(一)基本概念

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免疫系统的功能

免疫学的应用