心脏摆动征

口腔癌好发于（）。

A.口腔粘膜

B.颌骨组织

C.腮腺组织

D.下颌下腺组织

E.面部皮肤

第二节完形填空（共20小题；每小题1分，满分20分）

In a hall, a lecturer was giving a lecture to his students on stress management. At the beginning of the speech,he 41 a glass of water and asked the audience, “How 42 do you think this glass of water is?”

The students’ answers 43 from 20g to 500g.

“Actually,it does not matter on the absolute 44 . But it depends on how 45 you hold it. If I hold it for a minute, it is OK. If I hold it for a(n) 46 , I will have an ache in my right arm. If I hold it for a day, you will have to 47  an ambulance. It is exactly the 48 weight, but the longer I hold it, the 49 it becomes.” Hearing these words,the whole audience became silent, lost in thought.

After a moment, the lecturer continued, “ 50 we carry our burden all the time, 51 , we will not be able to carry on with the burden becoming increasingly heavier,  52 heavy for us to bear.

“So, what you have to do is to 53 the glass, rest for a while 54 holding it up again.”

As is shown in the story above, we have to put down the burden periodically, 55 we can be refreshed and are able to carry on.

So before you 56 home from work tonight, put the burden of 57 down. Don’t carry it back 58 . You can pick it up tomorrow.

Whatever burden you are having now on your 59 , let it down for a moment if you can.

Life is short,  60 it!  

41. A. supported            B. drank                C. needed                        D. raised

42. A. heavy                 B. pure           C. sweet                       D. many

43. A. differed             B. ranged              C. numbered                 D. limited

44. A. weight            B. volume             C. height                     D. quantity

45. A. tight                B. long                  C. difficult                   D. high

46. A. day                  B. second              C. hour                D. half

47. A. require                  B. invite          C. call                D. ask

48. A. proper                  B. same           C. right                   D. usual

49. A. less                  B. lighter              C. more                   D. heavier

50. A. If                     B. Unless         C. While                   D. Since

51. A. now and then    B. little by little        C. sooner or later      D. sometimes

52. A. too              B. so              C. rather                D. quite

53. A. put away       B. put down          C. put aside            D. put back

54. A. after            B. for              C. by                       D. before

55. A. so that                B. even if            C. as if                D. as soon as

56. A. leave                  B. clean                C. approach                  D. return

57. A. life                  B. duty                      C. task                     D. work

58. A. home                  B. office             C. company             D. family

59. A. shoulders            B. heart              C. body                   D. hands

60. A. do                   B. like                C. love                D. enjoy

在合成氨的反应中：N(g)+3H(g)2NH(g) △H < 0 ，可以提高氢气的转化率的措施是 （  ）

A．延长反应时间

B．充入过量的氢气

C．充入过量的氮气

D．升高温度

（6分）氨在国民经济中占有重要的地位，请参与下列探究

（1）已知在400℃时，2NH₃(g) N₂ (g)+ 3H₂(g) （△H>0）的平衡常数K=2,

①400℃时，N₂ (g)+ 3H₂(g)2NH₃(g)的K=           （填数值）。

②400℃时，在0.5L的反应容器中进行合成氨反应，一段时间后，测得N₂、H₂、NH₃的物质的量分别为2mol、1mol、2mol，则此时反应V(NH₃)_正            V(NH₃)_逆（填：＞、＜、＝、不能确定）。

（2）已知：＝H₂O（l）     △H＝—285.8 kJ· …①

 ＝NO₂（g）     △H＝+33.9 kJ·  …② 

 ＝NH₃（g）   △H＝—46.0 kJ· …③

H₂O（l）＝H₂O（g）              △H＝+44 kJ·    …④

则表示NH₃燃烧热的热化学方程式为                                          

家庭财产保险是以（）为保险标的的一种保险。

A.投保人存放在固定地点的财产和物资

B.城乡居民的有形财产

C.被保险人对第三者依法应负的赔偿责任

D.各种运输工具运输过程中的货物