鱼类生态学

A friend of mine met with an accident driving in darkness. His legs were so hurt that he couldn’t move. What was the __36__ was he found himself unable to ask for help-his mobile phone went out of __37__ as a result of exhausted battery. Nothing could be done but to __38__ in cold wilderness. It was 8 hours later that day broke, and then the __39__ of the rescue.

It is almost __40__ that he could stand the horror in the darkness for so long. Even more surprising was his __41__: “First of all I checked up my __42__ conditions and found myself not in fatal danger. As there was no __43__ to call for help, I leaned back in my seat trying my best to keep the wound from __44__.  In this way I dozed (打盹) off.”

His story put an end to my regret for the __45__ of an exploration adventure that happened last year. A group of young men __46__ to explore a mountain cave and got lost. __47__ to find a way out in the dark cave they were frightened and ran anxiously without a sense of __48__. Finally they fell dead in fear and exhaustion. According to the __49__ people that found them, the place where they got lost was only about 10 meters away from the __50__ of the cave. If they stayed on the spot when they lost their way and tried to __51__ themselves, they would probably sense a faint light glimmering (闪烁) not far away.

Don’t you think that you can compare it with __52__ itself? When you meet with obstacles in life and work, you are lost in darkness. __53__ you it’s unclear yet and you needn’t put up struggle __54__. It seems to be a negative attitude, __55__ a person who can afford to do so must have foresight as well as a great courage in the first place.

36.A.hopeless B.worst   C.more    D.best

37.A.service   B.way     C.order   D.work

38.A.cry  B.lie       C.wait     D.sleep

39.A.delay      B.success C.team    D.arrival

40.A.untrue    B.unimaginable      C.true     D.useless

41.A.plan       B.decision      C.explanation  D.excuse

42.A.physical  B.mental C.working      D.medical

43.A.method   B.way     C.alternative   D.strength

44.A.rotting    B.spreading    C.hurting D.bleeding

45.A.loss B.failure  C.disappointment   D.sadness

46.A.had B.managed     C.tried    D.planned

47.A.Willing  B.Unable C.Determined D.Deciding

48.A.hearing   B.sight    C.feeling D.direction

49.A.rescue    B.village C.local    D.brave

50.A.end B.top      C.opening       D.side

51.A.save       B.help     C.stop     D.calm

52.A.adventure      B.work    C.life      D.mankind

53.A.Mind      B.Watch  C.Imagine      D.Warn

54.A.really     B.immediately       C.carefully     D.hopefully

55.A.and B.so C.but      D.while

朗肯循环效率反映了（）。

A、冷源损失的大小

B、机炉工作完善程度

C、电厂燃料有效利用程度

D、汽机的作功能力

综合数据库

活塞敲缸响，一般有火花塞跳火一次，发饷（）次的规律。

A.1

B.2

C.3

D.4

拆装接地线的顺序，正确的说法是（）。

A.先装导体端，后装接地端

B.先装远处，后装近处

C.拆时先拆接地端，后拆导体端

D.拆时先拆导体端，后拆接地端