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江苏省如皋中学2019-2020学年高一下学期阶段考试英语试题

江苏省如皋中学2019-2020学年高一下学期阶段考试英语试题
江苏省如皋中学2019-2020学年高一下学期阶段考试英语试题

江苏省如皋中学2019~2020学年度第二学期阶段考试

高一英语

(满分150分考试时间120分钟)

第一部分,听力(共两节, 满分30分)

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秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。

1.Where are the two speakers?

A. In an office.

B. At the doct or’s.

C. In a restaurant.

2.What does the woman think of Professor Johnson’s lectures?

A. Great.

B. Just so-so.

C. Hard.

3.How will the man go to the zoo?

A. By bus.

B. On foot.

C. By taxi.

4.What are the speakers doing?

A. They are greeting each other.

B. They are talking over the telephone.

C. They are saying goodbye to each other.

5.What do you know about the woman?

A. She doesn’t have a computer.

B. Her computer is the latest model.

C. She has fallen behind others at work.

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,你将有时间阅读各个小题,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.What time is it now?

A. 10:30 p.m.

B. 10:10 p.m.

C. 9:50 p.m.

7.How long will it take the woman to the station?

A. Less than 50 minutes.

B. More than 50 minutes.

C. Less than 15 minutes.

8.Why did the man invite the woman to his house?

A. To have a dancing party.

B. To have a dinner party.

C. To have a tea party.

听第7 段材料,回答第9 至11 题。

9.What does the girl want to do after leaving school?

A. Take up singing.

B. Be an actress.

C. Study abroad.

10.What do the girl’s parents want her to be?

A. A singer.

B. A teacher.

C. An actress.

11.What does the girl usually do?

A. She follows her own heart.

B. She agrees with her teacher.

C. She does what her parents tell her to do.

听第8 段材料,回答12 至14 题。

12.Why is the woman worried?

A. It’s too early for her to leave the party.

B. She can’t take part in tomorrow’s party.

C. She doesn’t know how to get home after tomorrow’s party.

13.When does the last bus for the woman’s home leave?

A. 10:00 pm.

B. 11:00 pm. C 9:00 pm.

14.What has the woman decided to do?

A. To stay in a hotel.

B. To take a taxi home.

C. To stay in the host’s room.

听第9 段材料,回答15 至17 题。

15.Where does the man want to go?

A. To a post office.

B. To the music building.

C. To a street.

16.What is the problem with taking the bus?

A. The bus always runs late.

B. The bus doesn’t go directly there.

C. The bus will not come for a while.

17.What does the man finally decide to do?

A. Walk there.

B. Wait for the bus.

C. Find out another way.

听第10 段材料,回答18 至20 题。

18.How many Americans are now studying in colleges and universities?

A. 70 million.

B. 17 million.

C. 7 million.

19.What are American young people interested in?

A. Their parents.

B. A better life.

C. Their childhood.

20.What do American young people find difficult to understand?

A. The truth of their own lives.

B. The beliefs in American families.

C. The formation of American families.

第二部分,阅读理解(共两节, 满分30分)

第一节(共10小题;每小题2分, 满分20分)

阅读下列短文,从所给的四个选项(A、B、C、D) 中选出最佳选项,并在答题卡上将选项涂黑。

A

It can be tough to pull kids away from their computers and mobile devices these days. While they’re playing games, wouldn't it be great if they could be learning at the same time? Good educational apps offer fun challenges that teach specific grade-level skills. Here are four that combine fun and learning.

Understanding Math ( $ 3.99; iOS)

Understanding Math goes beyond basic comprehension to gain a deeper understanding of the whys and hows of math. The app tracks your child's progress to determine strengths and weaknesses in different skill areas, and you can customize (订制) your child's learning experience to suit the needs.

Word Creativity Kit ( $2.99; iOS)

Word Creativity Kit aims not only to make creative writing fun but also build up grammar rules. The app presents a series of words from seven categories, such as space or fantasy. Kids add their own words to finish the complete thoughts that these words

have inspired.

Barefoot World Atlas ( $4.99; iOS)

Barefoot World Atlas helps kids learn about geography and world cultures with a touch of the screen. Each region features a set of sub-topics, from wildlife and natural features to native people, landmarks, and architecture. These facts and illustrations are delivered in photographs, sounds, and hundreds of mini videos.

My Grades & Homework ( $0.99; iOS)

A combination of grades and homework tracker, My Grades & Homework can help your child stay organized and on top of the progress in school. A convenient calendar and course list format and offer a glance at your child' s assignment schedule that he or she might not normally get from standard homework planners.

21. Which app is beneficial to children's writing skills?

A. Understanding Math.

B. Word Creativity Kit.

C. Barefoot World Atlas.

D. My Grades Homework.

22. What is the common part of the four apps?

A. They make studies fun because of mini videos.

B. They help children improve their grades.

C. They need purchasing when downloaded.

D. They inform parents of their children's progress.

23. What is the purpose of the text?

A. To wish readers to bring in more similar apps for children.

B. To encourage parents to allow their students to play apps.

C. To design the educational apps to combine fun and learning.

D. To introduce four educational apps for readers to buy and use.

B

Mona Elizabeth Simpson was born on June 14, 1957 in Green Bay, Wisonsin, USA. Her mother had given birth to a boy before getting married to her father. This boy, who had been placed for adoption, later grew up to be Apple Inc. CEO and co-founder, Steve Jobs. She studied at Beverly Hills High School and then attended University of California and Columbia University. In 1993, she married TV writer and producer Richard Appel. The couple had two kids, Gabriel and Grace, before getting divorced.

Mona Simpson is a famous American novelist. She served as an editor for the Paris Review when she was a student at Columbia university. Her first novel was Anywhere but Here, which was released in 1986. This Whiting Award winning novel was a huge success and was even adapted as a movie later on. The sequel(续集) of the novel, titled The Lost Father, came out in 1992. After this, Simpson published her third novel A Regular Guy. This novel described the strained(紧张的) relationship between a father and his daughter. Then in 2000, the author’s fourth novel titled Off Keck Road got published, which told the story of three ladies in the Midwest.

In 2001, she started teaching creative writing at the University of California, Los Angeles. She was also appointed as a professor at the Bard College around this time. A few years later, Simpson authored the novel My Hollywood that was published in 2010. This novel explored the thoughts of two women, Lola and Claire, and the complex relationship issues faced by them. After this she released her novel titled Casebook in 2014. The talented writer has also written short stores including Victory Mills, Ramadan,

The Driving Child and Holiday, as well as an essay titled A Sister’s Eulogy for Steve Jobs.

24.What can we know about Mona Simpson from the text?

A. She has got eleven books published.

B. She has written six novels.

C. She has worked in several universities.

D. She has adapted many of her works as movies.

25. Which novel was written after Mona Simpson became a university teacher?

A. The Lost Father

B. A Regular Guy

C. My Hollywood

D. Off Keck Road

26. What is the text mainly about?

A. A writer’s career

B. A writer’s pursuit

C. A writer’s way of li fe.

D. A writer’s interest in literature

C

Millions of Americans sit behind a computer screen, chained to their desk all day because the vast majority of stable, high-paying professions(职业) are “office jobs”. However, having a successful career does not require you to sit behind a desk and plug away at a computer all day.

In fact, there are a large number of non-desk jobs in a variety of industries that are growing and offering workers a direct path to the middle class, according to a new analysis of labor market information from CareerBuilder. While most of the highest- paying non-desk jobs are medical professions that require a doctoral or professional degree, there are 170 non-desk professions that pay $15 per hour or more, do not require a bachelo r’s degree for a typical entry-level position, and have seen at least 6 percent job growth over the last four years.

“The US workforce has gradually changed to office-based work because of the rise of the professional service economy and productivity gains associated with information technology,” Rosemary Haefner, Vice President of Human Resources Officer at CareerBuilder, said in a statement. “But some of the healthiest areas of job growth year after year are in middle-skill professions that don’t require workers to sit in front of computer monitors and phones for 40 hours a week.”

Here are the top-paying jobs that don’t require you to work at a desk in various kinds, none of which require a four-year college degree and their hourly salary(工资) and growth rate since 2010: professional assistants: $26.57, 14 percent; elevator repairers: $37.81, 6 percent; mechanical engineering technicians: $25.19, 10 percent; and electromechanical(电动机械的) technicians: $24.68, 8 percent.

While they tend to pay less than traditional office jobs, non-desk professions provide a variety of benefits. Haefner points to a 2014 CareerBuilder survey that discovered workers who don’t work at a desk all day are less likely to complain about their work environment and less likely to report being overweight.

27. What does the underlined phrase “plug away” in the first paragraph probably mean?

A. turn off a switch

B. look for a job

C. keep on working

D. give up working

28. What conclusion can we draw from the second paragraph?

A. A non-desk job may provide you with a middle-class life.

B. The last four years has seen an increase in desk jobs.

C. The college degree is the ticket to a position.

D. A non-desk job cannot offer you a secure life.

29. What is the key reason for the US workforce to change to office-based work?

A. High salary.

B. Medicine.

C. Information technology.

D. Service industries.

30. Which job has grown the fastest since 2010?

A. Elevator repairers.

B. Professional assistants.

C. Electromechanical technicians.

D. Mechanical engineering technicians.

第二节(共5小题;每小题2分,满分10分)

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Before there was the written word, there was the language of dance. Dance expresses love and hate, joy and sorrow, life and death, and everything else in between.

___31___We dance from Florida to Alaska, from north to south and sea to sea. We dance at weddings, birthdays, office parties and just to fill the time.

“I adore dancing,” says Lester Bridges, the owner of a dance studio in Iowa. “I can't imagine doing anything else with my life.” Bridges runs dance classes for all ages. “Teaching dance is wonderful. ___32____It's great to watch them. For many of them, it's a way of meeting people and h aving a social life.”

___33___“I can tell you about one young couple,” says Bridges. “They're learning to do traditional dances. They arrive at the class in low spirits and they leave with a smile. ____34____”

So, do we dance in order to make ourselves feel better, calmer, healthier? Andrea Hillier says, “Dance, like the pattern of a beating heart, is life. Even after all these years, I want to get better and better.____35____I find it hard to stop! Dancing reminds me I'm alive."

A. So why do we dance?

B. Dance in the U.S is everywhere.

C. If you like dancing outdoors, come to America.

D. My older students say it makes them feel young.

E. I keep practicing even when I'm extremely tired.

F. Dancing seems to change their feeling completely.

G. They stayed up all night long singing and dancing.

第三部分,语言知识运用(共两节,满分40分)

第一节(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A、B、C和D四个选项中,选出可以填入空白处的最佳选项。

My 9-year-old daughter and I were flying from our home in Carolina to spend a week with my husband in Florida. We were 36 about the trip because we hadn’t seen him for five months, and my daughter 37 her Dad terribly.

As usual on the Charlotte-to-Miami flight, the plane was totally 38 . Because we did not get our boarding passes 39 we arrived at the gate, Kallie and I could not get seats together and were 40 by the aisle (过道). I asked two passengers in my row if they would 41 places with Kallie and me so that we could be together. They 42 , saying they thought they should stay in their assigned seats. Meanwhile, a mother

and her three children were in a 43 several rows ahead of us. There had been a mistake in their boarding passes, and 44 the whole family had been split up. The passengers in her row 45 refused to move elsewhere. She was very 46 about the younger boy sitting with strangers. She was in tears, yet nobody 47 to help her. There were a troop of Boy Scouts(童子军) on 48 . Suddenly the Scout leader stood up and said, “Ma’am, I think we can help you.” He then49 five minutes rearranging his group so that enough space was 50 for the family. The boys followed his directions cheerfully and without 51 , and the mother’s relief was obvious.

Kallie, however, was beginning to panic at the 52 of not being next to me. I told her that there wasn’t anything I could do. 53 , the man sitting next to the Scoutmaster, 54 to me and asked, “Would you and your daughter like our seats?”

55 to himself and the Scoutmaster. We traded seats and continued our trip, very much relieved to be together and watch the scenery from Kallie’s window sea.

36. A. eager B.excited C. anxious D. worried

37. A. missed B. considered C. imagined D.loved

38. A.crowded B. full C. empty D. overweight

39. A. before B. after C. until D. when

40. A. separated B. blocked C. divided D. connected

41. A. spare B. share C. switch D. keep

42. A. prevented B. agreed C. promised D. refused

43. A. hurry B. panic C. rush D. seat

44. A. however B. otherwise C. instead D. therefore

45. A. also B. too C. ever D. even

46. A. particular B. curious C. concerned D. content

47. A. offered B. suggested C. provided D. supplied

48. A. duty B. board C. watch D. spot

49. A. took B. cost C. spent D. paid

50. A. suitable B. comfortable C. probable D. available

51. A. permission B. excuse C. complaint D. apology

52. A. end B. thought C. feeling D. sense

53. A. Amazingly B. Puzzlingly C. Clearly D. Immediately

54. A. turned up B. turned away C. turned out D. turned around

55. A. sticking B. keeping C. waving D. referring

第二节(共10小题;每小题1分,满分10分)

阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。

Pollution takes away all the beauty of the beaches of Hawaii. I hate 56.__________ when I go to the beaches on sunny weekends and see rubbish bags lying on the sand, cigarette butts (烟头) 57. __________ (bury) in the sand, and soda cans floating in the ocean.

One thing that really annoys me is that I see 58. __________ (tour) who visit Hawaii leave their rubbish on the beaches. I was always taught after drinking soda to throw the can into the place 59. __________ it should stay--the trash can. Another thing that annoys me is that some people walk right by rubbish 60. __________ pretend that it’s not there.

The dogs or the fish are not to blame 61. __________ it. It’s our fault and we must

blame ourselves. Everyone has to do his or her part 62. __________ (solve) this problem. It can’t be difficult to do the job. There are a lot of things that we can do. First of all, we can help pick 63. __________ rubbish along the beaches. We could also form organizations that help clean up our beaches. More 64. __________ (important), we need to start now before the beaches 65. __________ (damage) beyond repair.

第四部分,(共10小题;每小题1分,满分10分)

根据所给首字母、中文提示或句意填空, 每空只能填一个单词。

66.The things he said hurt me too, but he has not ________(道歉)to me.

67.We must pay attention to these problems and take effective m________ to solve them.

68.You need to take r________ for what you have done.

69.That model won’t go into ________(produce) before 2030.

70.Then we will ________ ________ ________ (自由讨论)for discussion.

71.She said that someone must have been ________ ________(暗中监视) us in the washroom, but I didn’t believe her explanation.

72.________ ________(finish) his homework, the boy went out to play football.

73.We ________ ________ ________ ________(缩减) our spending, which meant learning a whole new way of living.

74.The national park has a large collection of wildlife, ________ ________ butterflies ________ elephants(从...到...).

75.________ ________ ________(关于) environmental issues, the government will carry out existing regulations.

第五部分,书面表达(满分40分)

第一节:应用文写作(满分15分)

根据所给材料和要求进行写作。注意卷面的整洁和书写的工整。

假设你是某中学学生李华,在你班级留学的美国学生Bill无法适应这里的学习与生活,感到苦闷,他写信向你求助。请你用英文给他写一封回信。内容如下:

1. 深表同情;

2. 提出建议并给出理由;(至少三条建议,如:参加学校社团活动,与朋友交流,做些户外活动等)

3. 希望建议能有所帮助。

注意:

1. 词数80左右;

2. 可适当增加细节,以使行文连贯。

Dear Bill,

______________________________________________________________________ ______________________________________________________________________ ___________________________________________________________________

Yours,

Li Hua 第二节读后续写(满分25分)

阅读下面短文,根据所给情节进行续写,便之构成一个完整的故事。

One day, when I was a freshman in high school, I saw a kid from my class walking home from school. His name was Kyle. It looked like he was carrying all of his books. I

thought to myself: “Why would anyone bring home all his books on a Friday? He must really be a nerd (书呆子).”

As I was walking, I saw a bunch of kids running toward him. They ran at him, knocking all his books out of his arms and tripping him so he landed in the dirt. His glasses went flying, and I saw them land in the grass about ten feet from him. He looked up and I saw this terrible sadness in his eyes. So, I jogged over to him and as he crawled around looking for his glasses, I saw a tear in his eye. As I handed him his glasses, he said, “thanks!” There was a big smile on his face. It was one of those smiles that showed real gratitude. We talked all the way home, and I carried his books. He turned out to be a pretty cool kid. The more I got to know Kyle, the more I liked him.

Over next four years, Kyle and I became the best friends. When we were seniors, he had the highest marks in the class and was chosen to give a speech at the graduation ceremony. I teased him all the time about being a nerd. He had to prepare a lot, and I was so glad it wasn’t me having to get up there and speak.

Graduation day, I saw Kyle. I said, “Hey, big guy, you’ll be great!” He looked at me with one of those looks, the really grateful one, and said “Thanks,” smiling.

As h e started his speech, he cleared his throat, and began. “Graduation is a time to thank those who helped you make it through those tough years. Your parents, your teachers, your siblings, maybe a coach...but mostly your friends. I am here to tell all of you that being a friend to someone is the best gift you can give him or her. I am going to tell you a story.”

注意:

1. 所续写短文的词数应为150左右;

2. 续写部分分为两段,每段的开头语已为你写好;

3. 续写完成后,请用下划线标出你所使用的关键词语。

Paragraph 1:

I just looked at my friend with disbelief as he told the story of the first day we met. ______________________________________________________________________ ______________________________________________________________________ ___________________________________________________________________Para graph 2:

I smiled back in tears.

______________________________________________________________________ ______________________________________________________________________ ___________________________________________________________________

江苏省如皋中学2019-2020学年度高一下学期第一次阶段考试参考答案

听力:1. CABBA 6. CCBAC 11. ACACB 16. CACBB

阅读:21. BCD 24. BCA 27. CACB 31. BDAFE

完形:36. BABCA 41. CDBDA 46. CABCD 51. CBADD

语法:56. it 57. buried 58. tourists 59. where 60. but

61. for 62. to solve 63. up 64. importantly 65. are damaged

词汇:66. apologized 67. measures 68. responsibility 69. production 70. open the floor 71. spying on 72.Having finished 73. have cut back on 74. ranging from...to

75. In/With regard to / With respect to/ In respect of

作文

Dear Bill,

I am sorry to know you are having trouble with your life and study here. However, the situation is easy to change. Now, I’d like to give you some advice.

Firstly, join some school clubs, where you can make some friends. Secondly, communicate with the people who have the same interest with you. Maybe it can get rid of your loneliness. Thirdly, do some outdoor activities and they can make you relaxed. By doing all these, you can get used to your school life and live happily.

Hope my advice can help you.

Yours,

Li Hua 【解析】

【分析】

本文书面表达属于应用文,要求写一封书信。

【详解】第1步:根据提示可知,本文是一封书信:假设你是某中学学生李华,在你班级留学的美国学生Bill无法适应这里的学习与生活,感到苦闷,他写信向你求助。请你用英文给他写一封回信。内容如下:1. 深表同情;2. 提出建议并给出理由;(至少三条建议,如:参加学校社团活动,与朋友交流,做些户外活动等)3. 希望建议能有所帮助。

第2步:根据写作要求确定关键词,如:having trouble with your life and study here(在这里生活学习有麻烦);join some school clubs(参加学校俱乐部);make some friends(交一些朋友);have the same interest with you(和你有同样的兴趣)等。

第3步:根据提示及关键词(组)进行遣词造句,注意主谓一致和时态语态问题。

第4步:连句成文,注意使用恰当的连词进行句子之间的衔接与过渡,书写一定要规范清晰,保持整洁美观的卷面是非常重要的。

【点睛】本文是一封书信,内容完整,语言规范,语篇连贯,词数适当。另外全文中没有中国式英语的句式,显示了很高的驾驭英语的能力。同时文中使用高级句子。Firstly, join some school clubs, where you can make some friends.句中where引导非限制性定语从句;communicate with the people who have the same interest with you. 句中who引导定语从句;另外,However, Firstly, Secondly,等的运用为文章增色添彩。

【答案】I just looked at my friend with disbelief as he told the story of the first day we met. Kyle had planned to kill himself over the weekend. He talked of how he had cleaned out his locker so his Mom wouldn’t have to do it later and was carrying his stuff home. Meanwhile, I found he looked hard at me and gave me a little smile. “Thankfully, I was saved. My friend saved me from doing the unspeakable.” I heard the gasp go through the crowd as this handsome, popular boy told us all about his weakest moment. When his eyes caught mine, I was able to see tears shimmered in his smiling

eyes.

I smiled back in tears. Not until that moment did I realize what big difference one small gesture had made to him. I even saw his Mom and Dad looking at me and smiling that same grateful smile. It dawned on me that never should we underestimate the power of our actions. With one small gesture we can change a person’s life. For better or for worse.

【解析】

【分析】

本文是一篇读后续写。要求考生就所给故事续写150字的文章, 使之成为一个完整的故事。

【详解】前文主要讲作者上高中时,有一天看到了同班的凯尔带着所有的书回家。一群孩子将凯尔撞倒在地。作者跑过去,帮助凯尔把书和眼镜捡了起来。后来两个人成了好朋友。毕业典礼的时候,凯尔被选去做毕业典礼演讲。他在演讲时,要给大家讲一个故事。那么,下文中,首先要接着叙述凯尔讲的故事。根据所给关键词sadness ,smile ,grateful 可以推知,这个故事肯定和作者有关系,并且这件事让Karl 对作者心存感激,对他的高中生活有很大的影响。最后,作者应该叙述自己听到凯尔讲的故事之后的感受。

【高分句型1】

It was not until that moment that I realized how much a small gesture had affected him. 直到那一刻,我才意识到一个小小的举动对他的影响有多大。本句使用了强调句型。

【高分句型2】 This handsome, popular boy told us all about his weakest moment, which made the crowd amazing. 这位英俊、受欢迎的男孩向我们讲述了他最脆弱的时刻,这让观众们惊叹不已。本句使用了which 引导的非限定性定语从句。

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江苏省如皋市第一中学2020┄2021届高三第一次学情检测化学试题

如皋市第一中学2021年高三学情调研测试 化学 可能用到的相对原子质量:H-1 C-12 O-16 S-32 Cl-35.5 Mn-55 Zn-65 Br-80 I-127 选择题 单项选择题:本题包括10小题,每小题2分,共计20分。每小题只有一个 选项符合题 .... 意。 1.化学与能源开发、环境保护、资源利用等密切相关。下列说法正确的是A.为提高农作物的产量和质量,应大量使用化肥和农药 B.绿色化学的核心是应用化学原理对环境污染进行治理 C.实现化石燃料清洁利用,就无需开发新能源 D.垃圾是放错地方的资源,应分类回收利用 2.下列有关化学用语表示正确的是 A.质子数为53、中子数为78的碘原子: B.N 2的电子式: C.S2—的结构示意图: D.邻羟基苯甲酸的结构简式: 3.下列现象或事实可用同一化学原理加以说明的是 A.氯化铵和碘都可以用加热法进行提纯 B.氯水和二氧化硫气体均能使品红溶液褪色 C.铁片或铝片置于冷的浓硫酸或冷的浓硝酸中均无明显现象 D.硫酸亚铁溶液和水玻璃在空气中久置后均会变质

4.常温下,下列各组离子在指定溶液中能大量共存的是 A.pH=1的溶液中:Fe2+、NO3—、SO42—、Na+ B.水电离出的c(H+)=10—12mol/L的溶液中:Ca2+、K+、Cl—、HCO3— C.c(H+)/c(OH—)=1012的水溶液中:NH4+、Al3+、NO3—、Cl— D.c(Fe3+)=0.1mol/L的溶液中:K+、ClO—、SO42—、SCN— 5.下列因果关系叙述正确的是 A.SO2具有漂白性,故可使酸性KMnO4溶液褪色 B.浓硝酸中的HNO3见光会分解,故有时在实验室看到的浓硝酸呈黄色 C.Na的金属性比Mg强,故可用Na与MgCl2溶液反应制取Mg D.Fe在Cl2中燃烧生成FeCl3,故在与其他非金属反应的产物中Fe也显+3价6.下列叙述正确的是 A.在原电池的负极和电解池的阴极上都发生失电子的氧化反应 B.镀层破损后,镀锡铁板比镀锌铁板更耐腐蚀 C.用惰性电极电解Na2SO4溶液,阴、阳两极产物的物质的量之比为1∶2 D.用惰性电极电解饱和NaCl溶液,若有1mol电子转移,则生成1mol NaOH 7.二氧化硅(SiO2)又称硅石,是制备硅及其化合物的重要原料(如图)。下列说法正确的是

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