用铝制饭盒盛放醋酸,一段时间后,饭盒被腐蚀,该种腐蚀属于__________,反

题型:填空题

问题:

用铝制饭盒盛放醋酸,一段时间后,饭盒被腐蚀,该种腐蚀属于__________,反应的化学方程式表示为 ___________;若用铝制饭盒盛放食盐(含水),一段时间后,饭盒被腐蚀,这种腐蚀叫___________,反应原理是(写电极反应和离子方程式)_____________。

考点:金属的电化学腐蚀
题型:填空题

把足量的铁粉投入到100mL1.0mol/L的盐酸中,充分反应后能得到标准状况下氢气的体积是多少?(要求有计算过程)

题型:填空题

I am my mother’s third child. When I was born, her doctor gently explained to my mother that my left arm was    41   , below the elbow (肘部). Then he gave her some    42  . “Don’t treat her any    43   from the other girls. Demand more.” And she    44  .

My mother had to work to support our family. There were five girls in our family and we all had to    45  . Once when I was about seven, I came out of the    46  , “Mom, I can’t peel (削皮) potatoes. I only have one hand.”

“You get back to peel those potatoes, and don’t ever use that as a(n)    47   for anything again!”

Of course I could peel potatoes with my good hand while holding them down with my other arm. There was always a    48  , and Mom knew it. “If you try hard  49  ,” she’d say, “You can do anything.”

Once in the second grade, our teacher had each of us race across the monkey bars (高低杠). When it was my turn, I    50   my head. Some kids    51  . I went home crying.

After work the next afternoon, Mom took me to the school play-ground.

“Now, pull up with your right arm,” she advised. She stood by as I practiced, and she    52    me when I made progress.

I’ll never forget the    53   time I was crossing the bars. The kids were standing there with their mouths open.

It was the way with everything. When I    54   I can’t handle (处理) things, I see Mom’s smile again. She had the heart to    55   anything. And she taught me I could, too.   

41. A. missing               B. broken                 C. diseased            D. short

42. A. warning                B. medicine             C. help                 D. advice

43. A. badly                 B. differently         C. well                  D. normally

44. A. did                      B. refused          C. cried               D. was

45. A. find out                B. work out             C. carry out          D. help out

46. A. kitchen              B. bedroom        C. house               D. school

47. A. idea                   B. change               C. excuse               D. tool

48. A. chance               B. way                 C. time                 D. success

49. A. enough              B. too                  C. again               D. often

50. A. hurt                   B. nodded             C. shook               D. turned

51. A. cheered               B. whispered          C. joked               D. laughed

52. A. helped               B. raised               C. praised              D. protected

53. A. first                    B. last                  C. wondered         D. next

54. A. admit                B. fear                 C. find                 D. realize

55. A. face                   B. teach                C. learn                D. solve

题型:填空题

临时线应有严格的审批制度,临时线最长使用期限是( )天,使用完毕后应立即拆除。

A.7

B.10

C.15

D.30

题型:填空题

阅读理解     

     Please help! I live in Germany with my wife and three kids. My parents live in the UK. I want my kids

to have as much contact with their grandparents as possible. The kids all use e-mail, Skype and SMS but my parents won't. I've bought them a laptop, paid for broadband, given them both mobile phones and a

digital camera, but they won't use them. My parents say they hate computers and new technology. What

can I do with these "technophobes"? 

                                                                                                                   Daniel, Buremburg, Germany

     Actually, the original technophobes were the Luddites, a group of cloth workers in 19th century Britain during the Industrial Revolution. The Luddite cloth workers, who traditionally made cloth by hand, were

worried that machines were going to take away their jobs and way of life. These machines could make

cloth much faster and cheaper than humans. In 1811 and 1812 the Luddites destroyed the machines that

they hated so much, but the British government supported the factory owners. Many Luddites were

arrested. Charlotte Bronte's novel Shirley will tell your parents all about it. 

                                                                                                                             Laura, Valencia, Spain

     Laura makes some interesting points, I think. Technophobes has been a common theme in science

fiction. Frankenstein, one of the first science fiction, is a warning of what could happen if humans began

to experiment with human life. 

                                                                                                                 Freda, Copenhagen, Denmark

     One thing you could try is to find hardware that is designed for older people to use. An example is the mobiles made by the US company, Jitterbug. Instead of icons and menus the Jitterbug phones ask users

simple "yes/no" questions and have larger keypads. The company realized that there are potentially 100

million older users in the US alone. 

                                                                                                                          Graham, Patras, Greece

1. The underlined part "the technophobes" in the passage refers to ______.

A. those who are ready to try new technology

B. those who are addicted to the Internet

C. those who refuse to use modern technology

D. those who are devoted to inventing new things

2. Which of the following is TRUE of the Luddites?

A. They called themselves the technophobes.

B. They got full support from their factory owners.

C. They preferred to keep their traditional working methods.

D. They were killed by the government.

3. Who has put forward a practical and useful suggestions?

A. Laura.

B. Freda.

C. Daniel.

D. Graham.

4. The passage is probably taken from _____.

A. a personal blog

B. a letter between friends

C. a personal diary

D. a speech on new technology

5. What can we infer from the passage?

A. Daniel would buy her parents a novel written by Shirley.

B. Charlotte Bronte wrote about technophobes in her novel Shirley.

C. Daniel would buy her parents cell phones with icons and menus.

D. Daniel worried about her children using e-mails.

题型:填空题

碎石类土或爆破石碴用作填料时,其最大粒径不得超过每层铺填厚度的()。

A、2/3

B、1/2

C、2/5

D、1/3

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