下列选项中不是自动空气断路器的组成元件的是（）。 A.感觉元件 B.操动元件 C.传

.

第二节 完形填空（共20小题；每小题1.5分，共30分)

阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项。

I had spent five exhausting years on my essay for my Ph. D．and was anxiously preparing for my oral boards (口头答辩)which were to be held in California, and I had  36  a flight through Minneapolis, where I was to change  37  .My flight was very late, and I was soon in an all-out run to  38  my flight. I had to stop to catch my  39  on a moving sidewalk when I  40  a woman in her fifties  41  with a carry-on bag.

I don't know  42  , but I looked at her face and blurted out, “Are you going on Flight 567 to California?”

She responded, “Yes.”

“So am I,” I responded. “Give me your bag. I'll run  43  and tell them to wait for you.” I took her bag and began running again.

I  44  onto the plane and told a flight attendant that one more passenger was behind me and to please  45  the plane for her. I  46  myself with her bag, and a few moments later she

arrived and was the last person on the plane  47  they closed the doors and it  48  . After the plane leveled off, I  49  the bag to her, and she smiled at me and thanked me.

I didn't sleep a wink in the hotel and arrived at the  50  at seven o'clock in the morning. The  51  kept me waiting for an hour in a room. I walked into the boardroom and was initially frightened by all the  52  in their robes（长袍）. As I slowly  53  at the faces of all the board members, I noticed the bright face of a woman. She gave me a smile  54  a young schoolgirl. It was the same woman whose bag I had carried ahead the night before.  55  , whenever I made a mistake on any question, she did a great job of relaxing me.

36. A．prepared     B．caught         C．scheduled  D．bought

37．A．trains          B．buses         C．planes       D．directions

38．A．catch     B．run           C．get        D．hold

39．A．flight          B．breath          C．bag       D．companion

40．A．greeted     B．met          C．noticed     D．sought

41．A．walking    B．struggling     C．carrying    D．dashing

42．A．how     B．why         C．what      D．where

43．A．suddenly   B．immediately     C．fast       D．ahead

44．A．raced     B．got           C．solved      D．opened

45．A．leave     B．hold         C．remain      D．stay

46．A．found       B．took         C．seated       D．occupied

47．A．after     B．when         C．while      D．before

48．A．left out     B．set off         C．took off    D．started off

49．A．presented  B．sent          C．proved      D．showed

50．A．place     B．university     C．palace       D．museum

51．A．meeting    B．board              C．essay      D．argument

52．A．professors B．assistants      C．teachers    D．employees

53．A．started      B．watched       C．glanced     D．glared

54．A．like      B．as             C．of         D．from

55．A．In the end B．No matter how C．What's more     D．Needless to say

吗啡的临床应用包括（）、心源性哮喘、止泻。

政治参与与政治民主的关系

使用搜索引擎要注意的事项包括（）

A.一定要有目的性

B.每个搜索引擎中高级查询功能使用的逻辑表达式不会有所差别

C.如果需要搜索包括某个完整词组的结果，则需要用引导将搜索字词括住

D.熟悉著名搜索引擎的查询技巧

什么是报警切换？