问题 选择题

下列物质的溶液中,不能与氢氧化钠溶液反应的是

A.HCl

B.MgCl2

C.KNO3

D.CuSO4

答案

答案:C

盐酸与氢氧化钠发生酸碱中和反应,A反应;氯化镁与氢氧化钠生成氢氧化镁白色沉淀,B反应;硝酸钾与氢氧化钠没有沉淀,没有水,没有气体生成所以二者不反应;硫酸铜与氢氧化钠反应生成蓝色的氢氧化铜沉淀,D反应;答案选C。

完形填空

  Nancy had just got a secretary's job in a big company to work in the sales department. Monday was the first day that she went to work, so she was very  36 .She got up very early and arrived at the  37  at twenty to eight. She  38 the door open and found nobody there. “I am the  39  to arrive.” She thought and came to her desk. She was surprised to  40  a large bunch of flowers on it. They were fresh.She  41  the flowers from the desk and smelled them. “Oh,how lovely!” Nancy  42  joyfully. She then looked round for a  43  to put them in. “Somebody has sent me flowers the  44  first day!” She thought happily. “But who could it be?” She began to wonder.

The day passed very  45  and Nancy did everything with great interest and  46 .For the following days of the week, the first thing Nancy did was to change water for the flowers. And then she  47  herself in her work.

Then came another Monday. When she came near her desk she was overjoyed to see a(an)  48 bunch of flowers there. She quickly put them in the vase, replacing the old ones.

The same thing happened again the next Monday, Nancy felt it  49  and this time she began to think of ways to find out the  50 .

On Tuesday afternoon, she was sent to  51  a plan to the general manager's office. She had to stay for a while at his secretary's desk waiting for his  52 .She happened to see on the desk a big note book  53 “Records of managers' meetings”, and glanced at the  54  pages. Suddenly her eyes fell on these words:“In order to keep the secretaries  55 ,the company has decided that every Monday morning a bunch of fresh flowers should be sent to each secretary's desk.”

Later, she was told that their general manager was a business management psychologist.

36. A. depressed     B. encouraged C. excited       D. surprised

37. A. office   B. workshop   C. Classroom  D. bookshop

38. A. forced  B. pushed       C. Turned       D. knocked

39. A. last       B. second             C. Third  D. first

40. A. uncover              B. smell  C. Find   D. pick

41. A. picked up     B. threw away        C. stared at     D. took up

42. A. cried    B. Laughed     C. wept   D. replied

43. A. jar B. Box    C. bottle  D. vase

44. A. happy   B. very    C. funny  D. quite

45. A. slowly  B. normally    C. quickly      D. hardly

46. A. wisdom       B. bravery      C. passion       D. enthusiasm

47. A. buried  B. dressed       C. Devoted     D. seated

48. A. old              B. Red    C. blue    D. new

49. A. special  B. angry  C. strange       D. difficult

50. A. sender  B. receiver      C. manager     D. waiter

51. A. send for              B. hand out     C. try out       D. hand in

52.A. orders   B. directives   C. gifts    D. receipts

53. A. marked B. written       C. printed              D. signed

54. A. closed   B. damaged    C. pinned              D. half-opened

55. A. at home       B. on time      C. in high spirits    D. in low spirits

单项选择题 B1型题