问题 选择题

给病人输血时应以输入什么血为原则(  )

A.O型血

B.同型血

C.异型血

D.AB型血

答案

输血以输同型血为原则,否则会出现红细胞凝集现象.但在紧急情况下,AB血型的人可以接受任何血型,但只能输给AB型的人,O型血可以输给任何血型的人,但只能接受O型血.如果异血型者之间输血输得太快太多,输进来的凝集素来不及稀释,红细胞可能引起凝集反应.因此,输血时应该以输入同型血为原则.异血型者之间输血,只有在紧急情况下,不得已才采用.因此给病人输血时应以输入同型血为原则.

故选:B.

单项选择题
完形填空

第三部分:完形填空(共20小题;每小题1.5分,满分30分)

Two men, both seriously ill, occupied the same hospital room. One man was allowed to sit up in his bed for an hour each   16   to help drain the fluid(排出流质) from his lungs. His bed was next to the room’s only window. The other man had to spend all his time  17   on his back.

The men talked for hours on end. They spoke of their families, their homes, their jobs and a whole lot of things. Every afternoon when the man in the bed by the window could sit up, he would pass the time by  18   to his roommate what he could see   19   the window.

The man in the other bed began to   20   for those one-hour periods when his   21   would be broadened and brightened by all the activity and color of the world outside.

The window overlooked a   22   with a lovely lake. Ducks and swans played on the water while children   23   their model boats. Young lovers walked arm in arm among   24   of every color and a fine   25   of the city skyline could be seen in the   26  . As the man described all this, the man on the other side of the room would close his eyes and  27   the beautiful scene.

Days and weeks passed. One morning, the day nurse arrived to find the man by the window, had died   28  in his sleep. Later, the other man asked   29   he could be moved next to the window. The nurse was happy to make the switch.

Slowly, painfully, he managed to   30   and take his first look at the   31   world outside. Surprisingly, it   32   a blank wall.   

The next day he learned from the nurse that the man was   33   and could not   34   see the wall. She said, “Perhaps he just wanted to   35   you.”

16. A. morning             B. afternoon          C. evening             D. night

17. A. flat                        B. quiet                 C. still                D. calm

18. A. listening             B. talking                 C. describing     D. explaining

19. A. beyond           B. outside              C. behind                 D. near

20. A. look                   B. live                   C. prepare            D. work

21. A. health            B. dream               C. world            D. career

22. A. garden            B. farm                 C. mountain       D. park

23. A. made             B. rowed               C. took               D. sailed

24. A. trees                   B. flowers             C. houses           D. birds

25. A. photo             B. map                  C. view             D. appearance

26. A. distance                 B. hospital             C. future           D. sky

27. A. enjoy              B. experience     C. sense             D. imagine

28. A. peacefully           B. painfully           C. sadly             D. bravely

29. A. when              B. if                  C. how              D. why

30. A. climb up             B. stand up            C. sit up            D. turn up

31. A. real                    B. noisy                C. ordinary            D. new

32. A. contained            B. covered             C. connected      D. faced

33. A. mad                   B. blind                 C. ill                     D. dead

34. A. yet                        B. just                   C. even             D. clearly

35. A. support           B. fool                  C. cure              D. encourage