问题 选择题

下列物质的化学式书写正确的是:

A.氯化镁:MgCl2

B.氧化钙:CaO2

C.氧化铁:FeO

D.氦气: Hg

答案

答案:A

题目分析:根据化学式中元素的正负化合价的代数和为零书写化学式,A选项中氯为-1价,镁为+2价,是正确的,故答案选择A;B选项化学式中元素的正负化合价的代数和不为零;C选项氧化铁中铁元素的化合价为+3价,而化学式中铁的化合价为+2价;D选项氦气的化学式为He.

完形填空

完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后各题所给的四个选项A、B、C和D中,选出空白处的最佳选项,并在答题卡上将该项涂黑。

If your father never says to you “I love you” when you are a child, it   36  to be more and more difficult for him to say the words as he grows   37 .

I do not   38  hearing the words from my father when I was growing up.   39 , I could not recall(回忆) when I had   40  said those words to him either.

One day, I decided to   41  the ice and make the first   42 . So in our next phone conversation I gathered all my   43  and let out the words in a low voice, “Dad… I love you!”

There was a   44  at the other end and he awkwardly   45 , “Well, same back at ya!”

I was unexpectedly   46  and my voice was raised, “Dad, I know you love me, and I know when you are ready, you will say what you want to say.”

Fifteen minutes later my mother called and   47  asked, “Paul, is everything okay?”

A few weeks later, Dad   48  our phone conversation with the words, “Paul, I love you.” I was so moved that tears were rolling down my cheeks as I finally “  49 ” the love. As I sat there in tears I realized that this   50  moment had taken our father-and-son relationship to a new   51 .Shortly afterwards, my father narrowly   52  death following heart surgery(外科手术). Many times   53 , I have   54  if I had not taken the first step and Dad not   55  the surgery, I would have never “heard” the love.

36. A. works out               B. breaks out                 C. comes out                 D. turns out

37. A. wiser                 B. busier                        C. weaker                       D. older

38. A. remember          B. enjoy                        C. mind                               D. regret

39. A. Truthfully                B. Fortunately                   C. Naturally                      D. Obviously

40. A. only                          B. last                                 C. once                               D. first

41. A. melt                         B. break                              C. strike                              D. build

42. A. complaint               B. promise                         C. move                              D. impression

43. A. strength                          B. ideas                              C. words                             D. attention

44. A. sigh                          B. silence                           C. voice                              D. cry

45. A. refused                   B. shouted                         C. replied                           D. explained

46. A. touched                  B. frightened                     C. shocked                         D. annoyed

47. A. excitedly                 B. nervously                      C. willingly                         D. sadly

48. A. continued               B. checked                         C. concluded                     D. interrupted

49. A. accepted                B. expected                       C. learned                          D. heard

50. A. quiet                        B. difficult                          C. special                           D. different

51. A. level                        B. idea                                C. world                              D. end

52. A. managed                B. escaped                         C. avoided                          D. faced

53. A. then                         B. ago                                 C. before                            D. since

54. A. realized                  B. found                              C. doubted                         D. wondered

55. A. challenged             B. experienced                           C. survived                         D. received

单项选择题

根据所给材料。回答131-135题。

2007年4月份。全省规模以上工业完成增加值161.92亿元,同比增长17.1%,1-4月份累计完成工业增加值605.47亿元,同比增长16.2%,比一季度加快0.5个百分点。累计完成工业总产值1570.71亿元,增长24.5%。1-4月工业生产的特点:
一是轻工业强势发展。轻工业增加值增长18.2%,快于重工业2.4个百分点;轻工业总产值增长21.8%,重工业增长24.9%,与重工业增幅差距由一季度的5.9缩小到3.1个百分点。
二是股份制企业对工业增长支撑作用明显。前4个月,股份制企业完成总产值1072.65亿元.同比增长24%,占全省总量的68.3%,对工业的贡献率67.2%,拉动全省工业增长16.5个百分点。国有企业增长较快,增长23.6%;外商及港澳台商投资企业增长30.7%;集体企业增长14.3%。
三是支柱产业增势强劲,形成了能源化工、装备制造、有色冶金和食品工业多点支撑的局面。1-4月份,八大支柱产业完成工业总产值1535.35亿元,同比增长24.2%,占全省规模以上工业企业的98%。其中,能源工业、装备制造业、有色冶金工业完成工业总产值744.70亿元、360.75亿元、165.52亿元,分别增长19.8%、35.4%和31.7%;食品工业增速加快,增长27.5%,增速比一季度加快4个百分点。以上4个行业占规模以上工业的88.6%,对全省工业生产的贡献率为92%,拉动全省工业生产增长22.5个百分点。

与去年同期相比。2007年1-4月份能源工业产值的增加额约是装备制造业产值增加额的( )。

A.30%

B.1.30倍

C.230%

D.88%