问题 单项选择题

病原体侵入人体后首先遭到哪种非特异性免疫因素的作用()。

A.抗毒素

B.中和抗体

C.吞噬细胞

D.致敏T细胞

E.调理素

答案

参考答案:C

解析:这是一道记忆、理解题。考学生对传染病感染过程中的免疫应答的认识。预测错误率较高。常见错误:选答"A"、"B"、"D"、"E",这主要是对免疫应答的过程理解不熟悉,在非特异性免疫过程中不牵涉对抗原的识别和二次免疫应答的增强,会首先遭到吞噬细胞的吞噬作用,体液因子能直接或通过免疫调节作用而清除病原体。要点在非特异性免疫过程中不牵涉对抗原的识别和二次免疫应答的增强,病原体侵入人体后会首先遭到吞噬细胞的吞噬作用。

完形填空

二. 完型填空(每小题1分,共20分)

For the first nineteen months, Helen Keller was like other pretty, happy babies in every way. Then a sudden illness destroyed her sight and hearing. 16 she could not hear what other people were saying, the child couldn’t 17 to speak. For the next five years, she lived in a world of darkness 18 sounds and words.

The person who changed Helen’s world was her teacher, Anne Sullivan, who 19 her life in 1887. Miss Sullivan had agreed 20 a blind child who acted like a young animal, rushing wildly around, throwing and hitting anyone whom she could 21 . Who could believe that 22 child could be taught? But Anne had been blind during part of her childhood and had learned to read Braille, 23 is a system of raised dots that can be felt by the fingers of a blind person. She had learned 24 again only after several operations, and she 25 forgot the experience of 26 . Miss Sullivan couldn’t teach Helen to speak 27 some other important things 28 . The little girl had to learn to control her actions and feelings. She had always been able to get what she wanted 29 force. The teacher had to 30 her learn that she could not always do 31 she wished to do.

Miss Sullivan’s battle began. Sometimes there was real fighting 32 the wild child and the strong teacher.  33 , however, the battle was won by Miss Sullivan, who had succeeded 34 Helen that she loved her and wanted to help her. The child and the teacher became friends. They 35 be friends until the teacher’s death, fifty years later.

(  )16. A. Because         B. If            C. Even          D. Though

(  )17. A. able            B. study          C. learn          D. managed

(  )18. A. with            B. without        C. either          D. of

(  )19. A. brought to       B. entered         C. saved         D. made

(  )20. A. to teach         B. to bring up      C. to cure        D. to punish

(  )21. A. see             B. reach          C. look at         D. look for

(  )22. A. so              B. a             C. such           D. such a

(  )23. A. it              B. this           C. that            D. which

(  )24. A. to speak        B. to walk         C. to look         D. to see

(  )25. A. not            B. neither          C. nor           D. never

(  )26. A. deaf           B. being deaf       C. blind          D. being blind

(  )27. A. as soon as       B. until           C. after           D. when

(  )28. A. learned         B. had studied     C. had learned      D. had been learned

(  )29. A. to use          B. by using          C. using         D. to be used

(  )30. A. make          B. get              C. tell            D. ask

(  )31. A. whatever       B. however          C. wherever       D. whoever

(  )32. A. among         B. between          C. in             D. against

(  )33. A. At first         B. At last           C. At the end      D. At once

(  )34. A. in             B. in understanding    C. in showing     D. to show

(  )35. A. wouldn’t       B. could never        C. came to        D. continued to  

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