试题与答案

已知反应A2(g)+2B2(g)2AB2(g) △H

题型:选择题

题目:

已知反应A2(g)+2B2(g)2AB2(g) △H<0,下列说法正确的是[ ]

A.升高温度有利于反应速率增加,从而缩短达到平衡的时间

B.升高温度,正向反应速率增加,逆向反应速率减小

C.达到平衡后,升高温度或增大压强都有利于该反应平衡正向移动

D.达到平衡后,降低温度或减小压强都有利于该反应平衡正向移动

答案:

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小题1:A小题2:A 题目分析:小题1:图中等压线的等值距为4hap,图示区域最高等压线闭合区域数值为1024hap,根据气压的变化趋势,闭合区域内气压应该在1024~1028hap之间。图示区域最低气压在1008~1004hap之间。图...

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题型:完形填空

Once there lived a rich merchant(商人) and a poor shoemaker in the same house. The merchant occupied the second floor,  36  the shoemaker lived and worked in a small room on the first floor. The shoemaker was one of the   37  persons on earth. He worked from morning till night, singing merrily. His heart was filled with   38  , whenever he saw the boots and shoes  39 . Now the merchant upstairs was so rich that he   40   knew how much wealth(财产) he had. He was always  41   over his gold and silver coins far into the night. Even in bed his uneasiness(不安) about his riches kept him 42  . When at last he had been asleep for an hour or two, up came the song of the happy shoemaker, who was an   43  riser. It continued all day and was a(n)  44  to the merchant. Day by day the merchant grew more and more tired through want of    45  . He asked a wise friend of his how he could put an   46  to the shoemaker’s song. “Well, if I were you, I would give the shoemaker a hundred pounds,” answered his friend. “You are rich enough to do that, I suppose. Ask for nothing in  47  . Simply give the money.” The merchant    48   the advice.

When the shoemaker   49  the bag that had been sent by the merchant, he was   50   to find shining coins. “I must hide this from the eyes of my neighbors. If they see it, they will think that I have stolen it,” he thought. “I will   51  it away even from my wife.” So he hid the bag of money under the floor. From then on he   52   his neighbors as much as he could. His wife who had been the best  53   to him, became troublesome. Now his mind was too much set on the money bag to   54   to his work with diligence(勤劳). He could not sing merrily now.   55  he thought of the money bag, he became uneasy and unhappy.

36.A.for    B.therefore   C.but    D.however

37.A.poorest     B.happiest    C.richest      D.shortest

38.A.smile B.sorrow      C.sadness     D.joy

39.A.being repaired  B.repair       C.to repair   D.to be repaired

40.A.always      B.completely       C.hardly      D.entirely

41.A.hiding      B.counting   C.calculating       D.figuring

42.A.awake      B.nervous    C.frightened D.asleep

43.A.early B.happy       C.noisy D.late

44.A.threat       B.matter      C.trouble     D.alarm

45.A.sympathy  B.understanding   C.sleep D.treatment

46.A.end B.notice       C.information      D.stop

47.A.trouble     B.need  C.turn   D.return

48.A.refused     B.agreed      C.asked D.followed

49.A.stole  B.opened     C.received    D.closed/carried

50.A.excited     B.amazed     C.ashamed                 D.disappointed

51.A.throw       B.keep  C.give  D.put

52.A.avoided    B.thanked    C.helped      D.attract

53.A.companion       B.fellow      C.shoemaker       D.merchant

54.A.tend        B.turn   C.attend       D.come

55.A.Wherever B.Whatever  C.Whenever D.However

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