人民警察必须把维护社会稳定作为自己全部工作的出发点和归宿。( )

民以食为天,食以安为先。下列做法符合食品卫生安全的是

A．用“瘦肉精”饲养生猪

B．用霉变花生压榨食用油

C．用加碘盐做食品调味剂

D．用工业色素给食品上色

（1）此夜曲中闻折柳，____________________。

（2）__________________，上有黄鹂深树鸣。

（3）夜发清溪向三峡，_____________________________。”

（4）__________________，弹琴复长啸。

（5）故园东望路漫漫，______________________。

（6）_________________，暮宿黄河边，不闻爷娘唤女声，_______________________。

（7）山际见来烟，_______________________。

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，掌握其大意，然后从41-60各题所给的A、B、C、D四个选项中，选出最佳选项

Football is, I suppose, the most popular game in England; one has only to go to one of the important matches to see. Rich and poor, young and old, one can see   37_  there, shouting or cheering for one side or  _38 _.

One of the most   39 _ things about football in England to a   40_  is the great   41   of the game which even the smallest boy seems to _ 42 _. He can tell you the names of the players in   43   of the important teams. He has   44   of them and knows the results of many matches. He   45   tell you proudly who he expects will   46   a game, and his opinion is   47   right.

Most schools in England _ 48 _ football seriously--   49   seriously than all the others   50   lessons are the most important. In England, it is   51   that education is not only an activity of filling a boy's _ 52 _ with facts in a classroom, education also   53   character training; and one of the best ways to do this is to play   54   games. The school   55   arranges games and matches for its pupils. Football is a good game for the body,   56   and a quick brain. As a result, it is the school's favourite game in winter.

37. A. all them                 B. them of all      C. all of whom      D. them all 

38. A. another              B. other                 C. the other           D. two

39. A. surprising           B. exciting             C. moving          D. puzzling

40. A. neighbour           B. stranger             C. native         D. relative

41. A. consideration       B. invention        C. knowledge         D. decision    

42. A. belong to            B. grasp             C. hold               D. have

43. A. more                  B. most                 C. few                   D. mostly

44. A. faces                  B. papers              C. photos              D. records

45. A. will                    B. may                  C. should         D. must

46. A. have                   B. win                   C. defeat         D. beat

47. A. ever               B. seldom             C. usually             D. once

48. A. regard             B. see                    C. worry             D. take

49. A. much more         B. much             C. very                  D. very much 

50. A. which                 B. where             C. that                   D. as

51. A. guessed           B. decided             C. believed            D. made

52. A. mind                  B. head                 C. brain.                  D. thought

53. A. means                 B. takes                 C. appears             D. proves

54. A. team                   B. personal            C. single            D. serious

55. A. still              B. therefore      C. somehow     D. never

56. A. feet                    B. running             C. skill                  D. sight

硅单质及其化合物应用范围很广。请回答下列问题：

(1)制备硅半导体材料必须先得到高纯硅。三氯甲硅烷(SiHCl₃)还原法是当前

制备高纯硅的主要方法，生产过程示意图如下：

写出由纯SiHCl₃制备高纯硅的化学反应方程式_______________________________。整个制备过程必须严格控制无水无氧。SiHCl₃遇水剧烈反应生成H₂SiO₃、HCl和另一种物质，写出配平的化学反应方程式______________________________________________。H₂还原SiHCl₃过程中若混入O₂，可能引起的后果是____________________________________________。

(2)下列有关硅材料的说法正确的是________(填字母)。

A．碳化硅化学性质稳定，可用于生产耐高温水泥

B．氮化硅硬度大、熔点高，可用于制作高温陶瓷和轴承

C．高纯度的二氧化硅可用于制造高性能通讯材料——光导纤维

D．普通玻璃是由纯碱、石灰石和石英砂制成的，其熔点很高E．盐酸可以与硅反应，故采用盐酸为抛光液抛光单晶硅

(3)硅酸钠水溶液俗称水玻璃。取少量硅酸钠溶液于试管中，逐滴加入饱和氯化铵溶液，振荡。写出实验现象并给予解释。____________________________________________。

某企业生产的巧克力原来只有小袋包装，其后分别设计了礼品包装、散装和大袋装，并且开发出牛奶口味，选择一些网点试销，并对比这些网站与已有网点的销售情况。调查市场反应，其中牛奶口味巧克力定价较低。问：

此调查方法属于( )。

A．观察法

B．实验法

C．询问法

D．留置法