形成高带耐受的细胞是（）。A.B.细胞 B.T细胞 C.T细胞和B细胞 D.单核细胞

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第三节：完型填空（共20小题；每小题1.5分，满分30分）

阅读下面短文，从短文后所给各题四个选项（A,B,C,D）中，选出可以填入空白处的最佳选项，并将答案写在答题卡上。

At lunch time one day, a week before her mother’s birthday, Sally decided to have a quick sandwich and a cup of coffee instead of her usual ___21__ in the college hall, and then go ___22___ near her college to try to find her mother a nice present . When she had been looking for half an hour, she__23__across a shop that was selling umbrellas cheap and ___24__ that one of those would solve her problem, since her mother had lost hers the month before.

“Now which ___25___ shall I choose?” She thought. “Well, I think a black one would be the most useful really. You can carry that when you are wearing _26___ of any color, can’t you?”  So having made up her __27__, she bought a lovely black umbrella and took it back to the college with her _28   her classes finished.

On her way back home in the train that evening, she felt hungry, because she had had such a small lunch, so she went __29__ to the buffet car for another sandwich and another cup of coffee. She had ___30__the black umbrella above her seat in the compartment, but when she got back, it was__31__! When she had left the compartment there had been no other passengers in it, but now there were three.

Sally burst into __32_when she saw that the umbrella was no longer there.the other passengers felt very sorry for her and asked what was the ___33___. When she explained that the black umbrella she had bought __34___her mother had disappeared, and she had to get out at the next __35__ , the three other passengers asked her for her mother’s __36__, in order to be able to send the umbrella on to her in case someone had __37_  it by mistake not on___38__, and brought it back after sally had got out of the train.

The next week, Sally heard ___39_ her mother, her letter said, “Thank you very much for your lovely presents, but why did you send me __40_black umbrellas?”

21. A. meal           B. breakfast             C. break                 D. rice

22. A. skating         B. hunting               C. shopping             D. swimming

23. A. set             B.went               C. met                  D. came

24. A. hoped          B.decided             C. guessed             D. wondered

25. A. size            B.length              C. design               D. color

26. A.clothing          B. clothes               C. dresses                D. trousers

27. A. mind          B. decision             C. heart                 D. judgement

28. A. before           B.after                C. until                 D. since

29. A. upstairs         B.along                 C. again                D. near

30. A. taken         B. forgotten            C. left                   D. found

31. A.gone            B. missed              C.lose                D. disappeared

32. A. cries           B.tears               C.laughter             D. anger

33. A.thing            B.wrong                 C. present               D. matter

34. A.for             B. to               C.by                  D. with

35. A. shop          B. station              C. stage               D. port

36. A.number          B. hobby               C.address             D. card

37. A. made          B. discovered          C. brought             D. removed

38. A. purpose       B. watch             C. action              D. idea

39. A. of             B. from               C.about               D.over

40. A. two           B.many                C.three               D. one

非水碱量法测定生物碱含量的限制条件是

A．Pkb＜8～10

B．pKb＜10～12

C．pKb＜12

D．pkb＜13

E．pKb＜10～14

外汇账户业务处理中，开户机构在接到外汇局销户通知书后，如果境内机构已经不存在，或者通知不到境内机构，应将其余额结汇后转入（）。

A.专项账户

B.临时存款账户

C.久悬未取款项账户

D.应解汇款账户

将商品流通企业的经营决策分为经营战略决策和经营战术决策，这是按经营决策的（）不同划分的。

A．重要程度

B．产生后果特点

C．问题是否重复出现

D．管理层次

隐性投诉