问题 选择题
一个三角形的底和面积与一个平行四边形的底和面积分别相等,平行四边形的高是10cm,三角形的高是(  )
A.10cmB.20cmC.5crn
答案

设三角形的高为h1,平行四边形的高为h2

因为h1=2S÷a,h2=S÷a,

所以h2=

1
2
h1

所以三角形的高是平行四边形的高的2倍,

三角形的高是:10×2=20(cm).

故选:B.

选择题
完形填空

第二节:完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后所给各题的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

A man had a little daughter--an only and much-loved child. He lived for her – she was his  36  . So when she became ill, he became like a man possessed, moving heaven and  37  to bring about her restoration to health.

His best efforts, however, proved  38  and the child died. The father became a bitter recluse, shutting himself  39  from his many friends and  40  every activity that might restore his poise (平静) and bring him back to his  41  self.   42  one night he had a dream.

He was in heaven, witnessing a grand pageant of all the little child  43  . They were marching  _44  a line passing by the Great White Throne. Every white-robed angelic child 45  a candle. He   _46  that one child’s candle was not lighted. Then he saw that the child with the  47  candle was his own little girl.  48  to her, he seized her in his arms, caressed her tenderly, and then asked, "How is it, darling, that your candle alone is  49 ?"

"Daddy, they often relight it, but your  50  always put it out. " Just then he awoke from his dream. The  51  was crystal clear (晶莹), and its effects were  52 .  53  that hour on he was not a recluse(隐者), but mingled freely and cheerfully with his  54  friends and associates. No longer would his darling’s candle be  55  by his useless tears.

36. A. time                  B. life                     C. possession         D. family

37. A. earth                 B. hospital           C. home                   D. field

38. A. good               B. hard              C. useless              D. useful

39. A. out                B. down             C. up                D. away

40. A. agreeing             B. permitting               C. refusing                 D. joining

41. A. normal             B. regular            C. common          D. gentle

42. A. Therefore            B. So               C. But              D. As

43. A. girls                B. angels            C. babies             D. gods

44. A. on                 B. at                C. under                   D. in

45. A. took                  B. brought           C. carded            D. caught

46. A. noticed              B. observed          C. watched           D. recognised

47. A. light               B. dark              C. bright             D. black

48. A. Walking             B. Jumping           C. Rushing          D. Climbing

49. A. unlighted            B. burning           C. lit                D. lighting

50. A. hearts              B. tears               C. wind              D. sweat

51. A. lesson              B. experience         C. dream            D. result

52. A. soon               B. fast              C. immediate         D. slow

53. A. After               B. Since                   C. From             D. In

54. A. former             B. older              C. regular            D. before

55. A. put on               B. put off            C. put up             D. pat out