08级考卷A答案(10年)

听⼒Part IV Reading Comprehension (Reading in Depth) (25 minutes) 25%Section A 5%（10×0.5%）Directions: In this section, there is a passage with ten blanks. You are requested to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.Questions 47 to 56 are based on the following passage.Some years ago I was offered a writing assignment that would require three month of travel though Europe's had been aboard a couple of times, but I could hardly claim to know my way around the continent. Moreover, my knowledge of foreign languages was limited to a little college French.I hesitated. How would I, unable to speak the language, totally unfamiliar with local geography or transportation systems, set up interviews and do research? It seemed impossible, and with considerable news. I sat down to write a letter begging off. Halfway through, thought ran through my mind: you can't learn if you don't try. So I accepted the assignment.There were some bad moments. But by the time I had finished the trip I was an experienced traveler. And ever since, I have never hesitated to head for even the most remote of places, without guides or even advanced bookings, confident that somehow I will manage.The point is that the new, the different, is almost by definition scary. But ach time you try something, you learn, and as the learning piles up, the world opens to you.I've learned to ski at 40, and flown up the Rhine River in a balloon. And I know I'll go on doing such things. It's not because I'm braver or more daring than others. I'm not, but I'll accept anxiety as another name for challenge and I believe I can accomplish wonders.注意：此部分试题请在答题卡 2 上作答。

2008–2009（上）期末考试八年级数学试卷参考答案一、1.A 2.D 3.B 4.B 5.A 6.C 7.C 8.A二、9.0，1 10.30 11.-2 12.（-7，-4）13.y=180-2x 14.2 15.略 16.100a+10b 17.58,5518.10三、19.原式=()2-12+-1+1 (2分)=2-1+-1+1 （4分）=1+ （6分）20.①整理得8x+3y=-13 ……③（1分）③+①×3得：14x=-19 x=- (3分)把x=-代入①得y=- (5分) 即x=-、y=- (6分)21.s=100-60t(0≤t≤) (3分) 图象看情况扣分（6分）22. ① 70.5 (2分) ②70 . 80 (6分)23.∵∠AEB=900 AB=BC=2BE ∴∠EAB=300∴∠B=600 (1分) ∴∠C=1200 (2分)又∵∠ABD=∠B=300 (3分) ∴AC=AB=6 AC=12 (5分) BD=6 BD=12 （6分）四、24. ①∵L2与y=2x+2平行∴K=2 （1分）又∵L2过（4，7）∴b=-1 (2分)②所围三角形的底长1+3=4，高是4 （5分）∴面积=×4×4=8 （7分）25.（略）不要求严格推理。

26.设……（1分）得（5分）解得（6分）答：（7分）五、27. ①当a≥4时无面积（1分）②当2≤a＜4时直线y=-x+a与正方形CD交点E（2，-2+a ）直线y=-x+a与直线y=x交点F（，）真的不掉线吗？？、？？？？？？？？？？？？∴EC=2-（-2+a ）=4-a △CEF的高为2- ∴S△=··（4-a）=（4-a）（3分）当0≤a＜2时直线y=-x+a与直线y=x交点F’（，）此时S△=×2×2-··a=2-a2 （5分）2008–2009（上）期末考试八年级英语试卷参考答案及评分标准Ⅰ．共20分，每小题1分。

AMC10A 2008 精品解析Q1. A bakery owner turns on his doughnut machine at 8:30 AM. At 11:10 AM the machine has completed one third of the day’s job. At what time will the doughnut machine complete the job?A) 1:50 PM B) 3:00 PM C)3:30 PM D)4:30 PM E) 5:50 PM 翻译：面包店老板在早上8:30打开他的甜甜圈机。

上午11:10，机器完成了一天工作的三分之一。

甜甜圈机什么时候能够完成工作?答案：D解析：由题意，从8:30到11:10完成了工作的三分之一，共花费了160分钟，若完成整项工作，需要花费480分钟，在4:30 PM 完成，故选D.Q2. A square is drawn inside a rectangle. The ratio of the width of the rectangle to a side of the square is 2 : 1. The ratio of the rectangle’s length to its width is 2 : 1. What percent of the rectangle’s area is inside the square?A) 12.5 B) 25 C)50 D)75 E)87.5 翻译：在矩形内画一个正方形。

矩形的宽度与正方形的边长之比是2:1。

这个矩形的长宽比是2:1。

问正方形面积是矩形面积的百分之多少?答案：A解析：设正方形的边长为a ，则由题意，矩形的宽为2a ，长为4a ，所以正方形的面积为2a ，矩形的面积为28a ，正方形面积是矩形面积的百分之12.5，故选A.Q3. For the positive integer n , let n denote the sum of all the positive divisors of n with the exception of n itself. For example,4123=+= and 121+2+3+4+6=16=， What is 6?A) 6 B) 12 C)24 D)32 E)36 翻译：对于正整数n ，n 表示除n 本身外所有正因数的和。

2008年普通高等学校招生全国统一考试（全国卷I）第一节（共5小题，每小题1.5分，满分7.5分）听下面5段对话，每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置，听完每段对话后，你都有10秒钟时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

例：How much is the shirt?A. ￡19.15B. ￡9.15C. ￡9.18答案是B。

1. What is the weather like?A. It’s raining.B. It’s cloudy.C. It’s sunny.2. Who will go to China next month?A. Lucy.B. Alice.C. Richard.3. What are the speakers talking about?A. The man’s sister.B. A film.C. An actor.4. Where will the speakers meet?A. In Room 340.B. In Room 314.C. In Room 223.5. Where does the conversation most probably take place？A. In a restaurant.B. In an office.C. At home.第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话或独白，每段对话或独白后面有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。

听每段对话或独白前，你将有时间阅读各小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。

每段对话或独白读两遍。

听第6段材料，回答第6至8题。

6. Why did the woman go to New York?A. To spend some time with the baby.B. To look after her sister.C. To find a new job.7. How old was the baby when the woman left New York?A. Two months.B. Five months.C. Seven months.8. What did the woman like doing most with the baby?A. Holding him.B. Playing with him.C. Feeding him.听第7段材料，回答第9至11题。

词综部分Part V Cloze (15 minutes) 10%（20×0.5%）Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A), B), C) and D) on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.注意：此部分试题请在答题卡2上作答。

Universities are institutions that teach a wind variety of subjects at advanced levels. They also carry out research work aimed __67__ extending man's knowledge of these subjects. The emphasis given to each of these functions __68__ from university to university, according to the views of the people in __69__ and according to the resources available.The smaller and newer universities do not __70__ the staff or equipment to carry out the __71__ research projects possible in larger institutions. __72__ most experts agree that some research activity is __73__ to keep the staff and their students in __74__ with the latest developments in their subjects.Most students attend a university mainly to __75__ the knowledge needed for their chosen __76__. Educationists believe that this aim should not be the __77__ one. Universities have always aimed to produce men and women __78__ judgment and wisdom as well as knowledge. For this reason. they __79__ students to meet others with differing __80__ and to read widely to __81__ their understanding in many fields of study. __82__ a secondary school course, a student should be interested enough in a subject to enjoy gaining knowledge for its own __83__. He should be prepared to __84__ sacrifices to study his chosen __85__ in depth. He should have an ambition to make some __86__ contribution to man's knowledge.67. A) at C) toB) by D) in68. A) turns C) movesB) ranges D) varies69. A) prospect C) controlB) place D) favor70. A) occupy C) involveB) possess D) spare71. A) maximum C) virtualB) medium D) vast72. A) but C) whileB) as D) for73. A) natural C) functionalB) essential D) optional74. A) coordination C) touchB) accordance D) grasp75. A) acquire C) endureB) accept D) ensure76. A) procession C) possessionB) profession D) preference77. A) typical C) mereB) true D) only78. A) with C) onB) under D) through79. A) prompt C) encourageB) provoke D) anticipate80. A) histories C) interestB) expressions D) curiosities81. A) broaden C) enforceB) lengthen D) specify82. A) Amid C) OverB) After D) Upon83. A) object C) effectB) course D) sake84. A) take C) makeB) suffer D) play85. A) field C) targetB) scope D) goal86. A) radical C) meaningfulB) truthful D) initialPart VI Translation (5 minutes) 5%（5×1%）Directions: Complete the sentences by translating into English the Chinese given in brackets. Please write your translation on Answer Sheet 2.注意：此部分试题请在答题卡2上作答，只需写出译⽂部分。

全国2008年10月自学考试高级英语试题课程代码：00600请将答案填在答题纸相应的位置上。

全部题目用英文作答（英译汉题目除外）I. The following paragraphs are taken from the textbooks, followed by a list of words or expressions marked A to X. Choose the one that best completes each of the sentences and write the corresponding letter on your Answer Sheet. One word or expression for each blank only. (12 points, 0.5 point for each)Women have an average life 1 of seven years longer than men and tend to marry men older than themselves; so two-thirds (six million) of all older women are widows. 2 widowed they do not have the same social prerogatives as older men to 3 and marry those who are younger. 4 , they are likely to end up alone—an ironic 5 of events when one remembers that most of them were raised from childhood to consider 6 the only acceptable state.The sheriff follows the county attorney 7 the other room. Then Mrs. Hale rises, hands 8 _ together, 9 intensely at Mrs. Peters, whose eyes make a slow turn, finally 10 Mrs. Hale’s. A moment Mrs. Hale holds her, then her own eyes 11 the way to where the box is concealed. 12 Mrs. Peters throws back quilt pieces and tries to put the box in the bag she is wearing.A company that delivers value 13 customer intimacy builds 14 with customers like those between good neighbors. Customer-intimate companies don’t deliver what the market wants15 what a specific customer wants. The customer-intimate company 16 a business of knowing the people it sells to and the products and services they need. It continually 17 its products and services and does so at 18 prices.Childhood’s 19 never asks to be proved (all conclusions are absolute). I didn’t question1why Mrs. Flowers had 20 me out for attention, nor did it 21 me that Momma might have asked her to give me a little talking to. All I 22 was that she had made tea cookies for me and read to me from her 23 book. It was 24 to prove that sheII. In this section, there are fifteen sentences taken from the textbooks with a blank in each, followed by a list of words or expressions marked A to X. Choose the one that best completes each of the sentences and write the corresponding letter on your Answer Sheet. One word or expression for each blank only. (15 points, 1 point for each)25. The campaign for more physical beauty seems to be both a tremendous success and a ______failure.26. When salesmen are doing well, there is pressure upon them to begin doing better, ______ they may start doing worse.27. In its entertainment, television ______ far too much to the lowest instincts of man, particularly the lust for violence.28. Modernity-snobs naturally tend to throw away their old ______ and buy new ones at a greater rate than those who are not modernity-snobs.29. But far worse is the nightmare of travel in and around Los Angeles, where public transport does not exist and people are literally choking ______ in their exhaust fumes.30. She felt her blood ______ her temples and there was pressure in her chest below thehollow.231. We don’t advertise openings and we don’t solicit applications. We keep a low ______, and we do things differently.32. She had hard work to see that the two young children who had been left to her ______ went to school regularly and got their meals regularly.33. On the edge of a small cape that marked the side of the bay away from the promontory was a loose ______ of rocks.34. She hurried on the almond Sundays and ______ the match for the kettle in quite a dashing way.35. For all but the last six, I have done the work—all the tedious details that ______ between victory and defeat on election day—while men reaped the rewards, which is almost invariably the lot of women in politics.36. The child strikes his head in the bath and falls unconscious. The man sits down and watches him ______.37. Her tongue was cut and she was screaming in wild ______ shrieks.38. I believe that TV’s appeal to the short attention span is not only inefficient communication but decivilizing ______.39. Indeed from the first draw any mark of pleasure was taboo: one couldn’t mock the ______ man by any sign of relief.III. Each of the following sentences is given two choices of words or expressions. Choose the right one to complete the sentence and write the corresponding letter on your Answer3Sheet. (15 points, 1 point for each)40. A fist fight followed, with much shouting and ______, until the ragged man succeeded in driving up to the door.A. disputingB. squabbling41. Susie will examine our secondary school programs to insure that all students are prepared to be responsible, productive and technologically ______ citizens of the 21st century.A. literaryB. literate42. Meanwhile I’m just going to be hanging around ______ my thumbs, so if you’ve got anything an idle detective can do, just say the word.A. twiddlingB. twisting43. These tasks were repetitive, lengthy, and lacking in any ______ interest.A. intrinsicB. instinctive44. Louisa said she could not go on living with a man who had married her under false ______.A. pretencesB. preferences45. Deep at night, they could still hear gun-fire ______ in the distance.A. rumblingB. rambling46. Her husband did not like her new interests and her ______ added further strain to an already failing marriage.A. persistenceB. obstinacy47. Political leaders have reached a ______ agreement to hold a preparatory conference next month.A. hesitantB. tentative48. Initially this was ______ at as farfetched conjecture, but gradually it has received grudging respect and empirical support.A. scoldedB. scoffed449. Gaining ______ to the club was no easy matter.A. permissionB. admittance50. Even though thousands of people die violently each year in Sri Lanka, the death of an important figure causes national ______.A. anguishB. melancholy51. The rapid fire of questions was deliberate, she knew, designed to scare her into ______ out the truth.A. blurtingB. blunting52. Small debts could rapidly mount up and begin to exert ______ pressure on the relationship between husband and wife.A. intolerantB. intolerable53. This part of the story is perhaps the most exciting, since the company not only kept its head above water, but produced a series of plays which ______ its reputation.A. increasedB. enhanced54. He looked across the sea: a faint ______ of pale light was rising in the midnight-blue sky.A. glimmerB. glamourRead the following passage carefully and complete the succeeding four items IV, V, VI and VII.How America Lives(1) Americans still follow many of the old ways. In a time of rapid changes it is essential that we remember how much of the old we cling to. Young people still get married. Of course, many do get divorced, but they remarry at astonishing rates. They have children, but fewer than before. They belong to churches, even though they attend somewhat less frequently, and they want their children to have religious instruction. They are willing to pay taxes for education, and they generously support institutions like hospitals, museums and libraries. In fact, when you compare the America of today with that of 1950, the similarities are far5greater than the differences.(2) Americans seem to be growing conservative. The 1980 election, especially for the Senate and House of Representatives, signaled a decided turn to the right insofar as political and social attitudes were concerned. It is as if our country spent the 1960s and 1970s jealously breaking out of old restraints and now wishes to put the brakes on. We should expect to see a reaffirmation of traditional family values, sharp restraints on pornography, a return to religion and a rejection of certain kinds of social legislation.(3) Patterns of courtship and marriage have changed radically. Where sex was concerned, I was raised in an atmosphere of suspicion, repression and Puritanism, and although husky young kids can survive almost anything, many in my generation suffered grievously. Without reservation, I applaud the freer patterns of today, although I believe that it’s been difficult for some families to handle the changes.(4) American women are changing the rules. Thirty years ago I could not have imagined a group of women employees suing a major corporation for millions of dollars of salary which, they alleged, had been denied them because they had been discriminated against. Nor could I imagine women in universities going up to the men who ran the athletic programs and demanding a just share of the physical education budget. At work, at play, at all levels of living women are suggesting new rules.(5) America is worried about its schools. If I had a child today, I would send her or him to a private school for the sake of safety, for the discipline that would be enforced and for the rigorous academic requirements. But I would doubt that the child would get any better education than l did in my good public school. The problem is that good public schools are becoming pitifully rare, and I would not want to take the chance that the one I sent my children to was inadequate.(6) Some Americans must live on welfare. Since it seems obvious that our nation can produce all its needs with only a part of the available work force, some kind of social welfare6assistance must be doled out to those who cannot find jobs. When I think of a typical welfare recipient I think of a young neighbor woman whose husband was killed in a tragic accident, leaving her with three young children. In the bad old days she might have known destitution, but with family assistance she was able to hold her children together and produced three fine, tax-paying citizens. America is essentially a compassionate society.(7) America cannot find housing for its young families. I consider this the most serious danger confronting family life in America, and I am appalled that the condition has been allowed to develop. For more than a decade, travelers like me have been aware that in countries like Sweden, Denmark, Russia and India young people have found it almost impossible to acquire homes. In Sweden the customary wait was 11 years of marriage, and we used to ask, “what went wrong?”It seemed to us that a major responsibility of any nation would be to provide homes for its young people starting their families. Well, this dreadful social sickness has now overtaken the United States, and for the same reasons. The builders in our society find it profitable to erect three-bathroom homes that sell for $220,000 with a mortgage at 19 percent but find it impossible to erect small homes for young marrieds. For a major nation to show itself impotent to house its young people is admitting a failure that must be corrected.(8) Our prospects are still good. We have a physical setting of remarkable integrity, the world’s best agriculture, a splendid wealth of minerals, great rivers for irrigation and an unsurpassed system of roads for transportation. We also have a magnificent mixture of people from all the continents with varied traditions and strengths. But most of all, we have a unique and balanced system of government.(9) I think of America as having the oldest form of government on earth, because since we started our present democracy in 1789, every other nation has suffered either parliamentary change or revolutionary change. It is our system that has survived and should survive, giving the maximum number of people a maximum chance for happiness.7IV. In this section, there are ten incomplete statements, followed by four choices marked A, B,C and D. Choose the best answer and write the corresponding letter on your Answer Sheet.(10 points, 1 point for each)55. Which of the following is NOT a major aspect of the American life discussed by the writer?A. Family value and housing.B. Social welfare and education.C. Agriculture and transportation.D. Marriage and women’s social status.56. The author welcomes the freer patterns of today’s courtship and marriage ______.A. since nobody can survive almost anythingB. because many young kids of his time suffered bitterlyC. although all the families find it difficult to deal with the changesD. whether or not these changes have indicated a decided turn to the right57. American public schools today are ______.A. no better than those decades agoB. no worse than those in the pastC. less desirable than they used to beD. more desirable than private schools58. Builders seem not willing to put up small homes for young married couples because ______.A. there is no market demand for small housesB. America is a nation impotent to house its young peopleC. most young people would dream of having larger homesD. it is not very lucrative for builders to put up small houses59. The America of today is similar with that of 1950, a case in point is ______.A. young people have more children than their parents didB. young people do many things in the same ways as their parents did8C. American people are reluctant to donate money to public servicesD. many young people are cautious about getting re-married after a divorce60. Which of the following is a serious problem that exists in American society?A. American women are changing the rules.B. America cannot provide homes for its young people.C. American public schools are as good as private schools.D. None of the jobless can enjoy more welfare than before.61. As the writer expects to see a reaffirmation of traditional family values, sharp restraints on pornography, a return to religion and a rejection of certain kinds of social legislation, he is somewhat ______.A. radicalB. cynicalC. conservativeD. open-minded62. Obviously, the writer is ______ the major changes that have taken place and that are occurring in American life.A. in favor ofB. enraged byC. critical ofD. worried about63. The American system of government has survived and should survive, because ______.A. it is truly democraticB. it is the oldest on earthC. it has experienced numerous changesD. it offers its people chances of happiness64. This essay is ______.A. narrativeB. expositoryC. descriptiveD. argumentativeV. There is one underlined part in each of the following sentences, followed by four choices marked A, B, C and D. Choose the one that is closest in meaning to the underlined part and9write the corresponding letter on your Answer Sheet. (10 points, 2 points for each)65. In a time of rapid changes it is essential that we remember how much of the old we cling to.A. adhere toB. put up withC. take pride inD. agree upon66. It is as if our country spent the 1960s and 1970s jealously breaking out of old restraints and now wishes to put the brakes on.A. stop itB. embrace itC. renounce itD. accelerate it67. Thirty years ago I could not have imagined a group of women employees suing a major corporation for millions of dollars of salary...A. applying toB. competing withC. making a legal claim againstD. demanding compensation from68. In the bad old days she might have known destitution, but with family assistance she was able to hold her children together...A. scarcityB. prosperityC. prostitutionD. impoverishment69. I consider this the most-serious danger confronting family life in America, and I am appalled that the condition has been allowed to develop.A. satisfiedB. shockedC. remindedD. convincedVl. Translate the following sentences into Chinese and write the translation on your Answer Sheet. (10 points, 2 points for each)70. They belong to churches, even though they attend somewhat less frequently, and they want their children to have religious instruction.71. The 1980 election, especially for the Senate and House of Representatives, signaled a10decided turn to the right insofar as political and social attitudes were concerned.72. Nor could I imagine women in universities going up to the men who ran the athletic programs and demanding a just share of the physical education budget.73. The problem is that good public schools are becoming pitifully rare, and I would not want to take the chance that the one I sent my children to was inadequate.74. For a major nation to show itself impotent to house its young people is admitting a failure that must be corrected.VII. Answer the following essay question in English within 80-100 words. Write your answers on the Answer Sheet. (10 points)75. What do you think are the merits that we could learn from Americans?VIII.Translate the following sentences into English and write the translation on your Answer Sheet. (18 points, 2 points each for 76-80, 8 points for 81)76. 就政策而言，我们和你们一样对相同的事情感到愤怒——我们更为愤怒，因为我们的生命成了用来检验政策的东西。

2010年普通高等学校招生全国统一考试（北京卷）英语本试卷共15页，共150分。

考试时长120分钟。

考生务必将答案答在答题卡上，在试卷上作答无效。

考试结束后，将本试卷和答题卡一并交回。

第一部分：听力理解（共三节，30分）第一节（共5小题；每小题1.5分，共7.5分）听下面5段对话。

每段对话后有一道小题，从每题所给的A、B、C三个选项中选出最佳选项。

听完每段对话后，你将有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话你将听一遍。

例：What is the man going to read?A. A newspaper.B. A magazine.C. A book.答案是A。

1. What does the man want to be in the future?A. A soldier.B. A lawyer.C. A teacher.2. What does the girl want?A. Sweets.B. Books.C. Pencils.3. When did the two speakers plan to meet Jane?A. At 2:00.B. At 2:15.C. At 2:30.4. What will the woman do tonight?A. Go to the park.B. Play basketball.C. Work at a bookstore.5. What is the woman doing?A. Offering help.B. Asking for information.C. Making an introduction.第二节（共10小题；每小题1.5分，共15分）听下面4段对话或独白。

每段对话或独白后有几道小题，从每题所给的A、B、C三个选项中选出最佳选项。

听每段对话或独白前，你将有5秒钟的时间阅读每小题。

听完后，每小题将给出5秒钟的作答时间。

2008届毕业考试答案及评分标准31．（5分）（1）②③； （2）4P+5O 2−−→−点燃2P 2O 5，红磷足量（装置气密性良好等合理就得分），（实验室）空气中氧气约占总体积的五分之一，一氧化碳（合理就得分）32．（8分）（1）甲烷（CH 4），物理，2CO+O 2−−→−点燃2CO 2，排净管道内的空气（氧气），防止点燃时发生爆炸；（2）C 3H 8+5O 2−−→−点燃3CO 2+4H 2O（3）氢能（风能、潮汐能等，合理就得分），2 （4）NO 2 33．（8分）（1）B ；（2）三 16 9：4 （3）+6；NaHCO 3（4）蔗糖，2NaCl+2H 2O −−−→−通直流电2NaOH+H 2↑+Cl 2↑34．（5分）（1）H 2O ；CaO（2）CaCO 3−−→−高温CaO+CO 2↑；CO 2+Ca （OH ）2=CaCO 3↓+H 2O ；Ca （OH ）2+Na 2CO 3= CaCO 3↓+2NaOH( 合理答案得分)三、实验题（每空1分，共18分） 35．（6分）（1）①酒精灯；（2）AD 或AE ，2KMnO 4−→−∆K 2MnO 4+MnO 2+O 2↑；（3）CaCO 3+2HCl = CaCl 2+CO 2↑+H 2O ；D ；将燃着的木条放在集气瓶口，木条火焰熄灭，证明已经集满36．（4分）（1）氧化物 （2）3CO+Fe 2O 3−−→−高温3CO 2+2Fe ；澄清石灰水变浑浊；点燃尾气中的CO ，防止污染空气； 37．（8分）（1）取两种白金分别放入盛有稀盐酸的试管中，有气泡产生的是含锌的白色金，无气泡产生的是铂金（2）N i ＞Zn ＞Cu ；无明显现象（无气泡产生）；①；Ni+2HCl=NiCl 2+H 2↑；能；镍的活动性比铜强；Zn NiSO 4 Cu （其他合理答案得分） 四、计算题（共6分，计算结果保留一位小数） 38．（3分）设产生氧气的质量为X 2H 2O −−−→−通直流电2H 2↑+O 2↑……………………………………………………1分 4 32 5吨 XX3254=吨……………………………………………………1分 X=40吨……………………………………………………1分答：（略）39．（3分）（1）901.6……………………………………1分 （2）20………………………………1分（3）28.6%………………………………………………1分。

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