山西省太原五中2018届高三3月阶段练习英语试卷【附答案】

山西省太原五中2018届高三3月阶段练习英语试卷【附答案】
山西省太原五中2018届高三3月阶段练习英语试卷【附答案】

太原五中2017—2018学年度第二学期阶段性练习

高三英语

(考试时间:120分钟试卷满分:150分)

注意事项:

1.本试卷由四个部分组成。其中,第一、二部分和第三部分的第一节为选择题。第三部分的第二节和第四部分为非选择题。

2.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。

3.回答选择题时,选出每小题答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑;回答非选择题时,将答案写在答题卡上,写在本试卷上无效。

4.考试结束后,将本试卷和答题卡一并交回。

第一部分听力(共两节,满分30分)

做题时,先将答案标在试卷上。录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。

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。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。

例:How much is the shirt?

A. £ 19. 15.

B. £ 9. 18.

C. £ 9. 15.

答案是C。

1. How does Richard usually to school?

A. By bike.

B. On foot

C. By bus

2. Why will the woman get the fish?

A. Meat is more expensive than it was.

B. The price of fish will go up again.

C. It is cheaper than in other shops.

3. What are the speakers going to do?

A. Have a meal.

B. Print a menu.

C. Fry some lamb.

4. What are the speakers mainly talk about?

A. The woman’s father

B. The woman’s hobby.

C. The woman

5. What is the woman probably?

A. A teacher.

B. A doctor.

C. A coach.

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。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、7题。

6. What kind of movie does the woman mentioned waiting to see?

A. A romance.

B. An art movie

C. A science fiction movie

7. When does the movie at the Tulip Cinema start?

A. At 7:15.

B. At 6:45.

C. At 6:15

听第7段材料,回答第8、9题。

8.What happened to the woman?

A. She got hurt in her car.

B. She was hit by a car.

C. She knocked a tree over.

9. How often does the class meet?

A. Once a month.

B. Twice a month.

C. Once a week.

听第8段材料,回答第10至12题。

10. From where did the woman know about the weather?

A. The radio.

B. The newspaper.

C. The TV.

11. When does the conversation take place?

A. At the beginning of the week,

B. Just before the weekend.

C. In the middle of the week,

12. What does the man prefer to do?

A. Pay no attention to the weather.

B. Buy a new umbrella.

C. Take a raincoat.

听第9段材料,回答第13至16题。

13. Why does the man plan to go to the Yunnan Nationalities Villages first?

A. To learn more about minority peoples.

B. To buy some souvenirs.

C. To get some skills.

14. What will the speakers do on the second day?

A. Visit the ma n’s colleagues.

B. Travel downtown in Kunming.

C. Go sightseeing on the Dianchi Lake.

15. Where will the speakers stay on the fourth day?

A. In Dali.

B. In Lijiang.

C. In Kunming.

16. How long is the speakers’ trip?

A. Four days.

B. Five days.

C. Six days.

听第10段材料,回答第17至20题。

17. How many tourists are the in the group?

A. Eight.

B. Ten.

C. Twelve.

18. Who is Mark probably?

A. The hotel clerk.

B. The speaker’s assistant.

C. A tourist.

19. Why did the speaker just have a sandwich yesterday?

A. She had no time for lunch.

B. She forgot about lunch time.

C. She had little money.

20. Where will the tourists go tomorrow afternoon?

A. The park.

B. The city museum.

C. The zoo.

第二部分阅读理解(共两节,满分60分)

第一节(共15小题;每小题3分,满分45分)

阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。

A

It looks like 2017 is shaping up to be a record-breaking year in movie history. Here is a list of some of the year’s biggest blockbusters so far.

Kong: Skull Island

A reboot(重启) of King Kong would normally get laughed at in this day and age, but it looks like this modern version of the story will be worth watching. With US actress Brie Larson and UK actor Tom Hiddleston in the mix, this film is set to be this year’s biggest monster tale.

Release Date: 3/10/17

Beauty and the Beast

Director Bill Condon is bringing back a part of our childhood in live action, complete with the songs we all remember and love. With British stars Emma Watson and Dan Stevens leading the cast, the classic. Walt Disney story already sounds like it’ll be a delight for both children and adults.

Release Date: 3/17/17

The Fate of the Furious

There was doubt that we’d even get a Fast 8, especially after the fitting ending US actor Paul Walker’s character was given at the end of Furious 7. Fans thought they’d never see Dom and the rest of the crew back in action, but thankfully US star Vin Diesel himself confirmed that The Fate of the Furious is fueling up for another go. The actor’s chara cter, Dom, turns to the dark side, funded by new enemy Cipher, played by South African actress Charlize Theron. Can the rest of Dom’s fam ily join together to bring their old leader down? Find out in April.

Release Date: 4/14/17

Spider-Man: Homecoming

Spider Man is heading home to Marvel Studios for the first time. The movie will show us Peter Parker’s high school days, and will co ntinue the threads we saw formed during his initial appearance in Captain America: Civil Was. We know that Michael Keaton is playing The Vulture in this story, and that both Happy Hogan and Tony Stark, played by US actors Jon Favreau and Robert Downey Jr., are along for the ride. But it’s Tom Holland’s show as Spider-Man, so let’s see what he has in store.

Release Date: 7/7/17

21. Which of the following movies can’t you see on May Day?

A. Kong: Skull Island

B. Beauty and the Beast

C. The Fate of the Furious

D. Spider-Man: Homecoming

22. What can we know about Beauty and Beast?

A. It is fueling up for another go.

B. It is produced by Marvel Studios.

C. It’ll show us Peter Parker’s school days.

D. It’ll be enjoyable for both children and adults.

23. Dom, played by _____, turns to the dark side in The Fate of the Furious.

A. Vin Diesel

B. Charlize Theron

C. Paul Walker

D. Dan Stevens

B

When Michael Phelps announced his retirement at the 2016 Rio Olympics he really had no intention

of swimming competitively again. However, that changed when the athlete was approached by the Discovery Channel to help kick off Shark Week with a race against one of the world’s fastest and most efficient animals ––a great white shark!

To prepare for the big event, Phelps, who has set 3339 world records and won 28 Olympic medals, practiced by racing against a reef and a hammerhead shark ––both computer generated(电脑生成), of course. While the swimmer’s time of 18.7 seconds was enough to beat the reef shark by 0.2 seconds, he fell behind the hammerhead, which completed the 50-meter distance in 15.1 seconds.

On Sunday, July 23 at 7:00 p.m., over five million viewers tuned in to the highly anticipated Phelps vs. Shark: Great Gold vs. Great White. To complete effectively against the fierce fish that can swim at speeds of up to 25 mph, or about times faster than humans, Phelps wore a custom wetsuit. It was designed to reduce drag.

While television viewers saw the competitors swimming side by side, in reality, Phelps raced by himself in the cold Atlantic waters off Cape Town, South Africa. The Discovery Channel film crew then inserted his computer generated opponent simulating(模拟) a real shark’s speed.

Though Phelps managed to complete the distance in an impressive 38.1 seconds, 9.41 seconds faster than his personal best of 47.51 seconds, he was no match for the great shark. Like a true champion, the fish celebrated the victory by leaping out of water.

While some fans were disappointed that Phelps did not race a live shark in the ocean, staging that would have been dange rous for the swimmer. Besides, Discovery Channel’s aim in organizing the stunt was to generate excitement and interest in sharks. Given that it was the highest-rated Shark Week special in the program’s 29-year history, they sure succeeded.

24. Why was Michael Phelps approached by the Discovery Channel?

A. To play a role in a film.

B. To help capture a shark.

C. To help start Shark Week.

D. To perform with animals.

25. What do you learn about Michael Phelps?

A. He has won 28 Olympic medals.

B. He has broken 39 world records.

C. He raced a live shark in the ocean.

D. He had retired by the Rio Olympics.

26. What can we infer about the custom wetsuit?

A. It can help Michael Phelps keep warm.

B. It can help TV viewers see more clearly.

C. It was worn by Phelps at the Rio Olympics.

D. It can help Michael Phelps swim faster.

27. How much time did it take the shark to complete the distance?

A. 9.41 seconds.

B. 36.1 seconds

C. 38.1 seconds.

D. 47.51 seconds.

C

The word malnourishment(营养不良) often reminds us of images of natural disasters, droughts and children with swollen bellies. But malnourishment is not just a lack of food. It can also be caused by not having enough vitamins, minerals, and protein. The absence of these key nutrients(营养品) has severe effects on the body. For example, lack of protein causes slow growth in children and decreased immunity. Not enough vitamin A in the diet causes blindness. Iron deficiency causes anaemia—a lack of red blood cells—that makes people feel tired and sleepy.

World malnourishment is a complex problem, but science may offer some solutions. Scientists have

explored many ways to improve people’s diets, from adding nutrients to food that people already eat, to creating new types of food in the laboratory.

Adding nutrients to foods such as sugar during processing has been a key way to improve the nutrition of large populations. However, in very poor communities, not everyone will have access to these foods. Scientists are now developing bio-fortified(生物加强型的) foods such as Golden Rice, Which has been genetically engineered to contain Vitamin A. It can be given to people who rely on rice as a main food.

Insects are good source of animal protein, fat, vitamin, fibre and mineral content. It is estimated that they already form part of the traditional diets of at least 2 billion people. Thailand, for example, already has 20,000 insect farms. New ways to cultivate and process them could see insects replace birds and mammals as sources of dietary protein.

As the world’s population grows, so does the demand for meat, which requires enormous re sources to cultivate. As an alternative, scientists have grown meat in a laboratory using stem cells taken from a cow. Early results have produced very small yields, lacking in flavor. But the potential to synthetically(合成地) cultivate meat protein could be a practical solution to ever-stretched resources.

28. Which of the following is the main idea of the passage?

A. Scientists have grown synthetic meat in a laboratory using stem cells.

B. Scientists are exploring approaches to help food with better nutrients.

C. The absence of the key nutrients has severe consequences on the body.

D. Malnourishment is becoming a global issue affecting millions of people.

29. Which of the following is the consequence of lack of protein?

A. Weaker immunity.

B. Loss of eyesight.

C. Faster development.

D. Difficulty in sleeping.

30. What do we learn about Golden Rice?

A. It is rich in protein.

B. It sells well globally.

C. It contains Vitamin A.

D. It is grown in Thailand.

31. What do we learn about synthetic meat grown in a laboratory?

A. It is made of milk.

B. It is a great success.

C. It is equal to real beef.

D. It doesn’t t aste delicious.

D

Traditionally, it has been the worker’s role to work and management’s role to manage. Managers have planned and directed the firms operations with little thought of consulting the labor force. Managers have rarely felt forced to obtain th e worker’s opinions or to explain their decisions to their employees. At most, companies have pr ovided “suggestion boxes” in which workers could place ideas for improving procedures. In recent years, however, many management specialists have been arguing that workers are more than sellers of labor—they have a vital stake(利害关系) in the company and may be able to make significant contributions to its management. Furthermore, major company decisions affect workers and their dependents. This is particularly true of plant closings, which may put thousands on the unemployment lines. Should workers, then, play a stronger role in management?

Workers should have a role in management. At the very least, the labor force should be informed of major policy decisions. A common complaint among ordinary workers is the lack of information about company policies and actions. Between 1980 and 1985 about five million workers were the victims of plant closings and permanent layoffs(失业), often with no warning. At least 90 days’ notice ought to be given in

such circumstances so that workers have time to adjust Management should consult workers before closing a plant, because the workers might be able to suggest ways of improving productivity and reducing costs and might be willing to make concessions(妥协) that will help keep the plant operating.

It should become a general practice to include workers in some managerial decision making. There ought to be representatives of the workers on the firm's board of directors or other major policy-making groups. If ordinary workers are given a voice in the planning and management of the work flow, they will help to make improvements, their spirits will rise, and their productivity will increase. As a further incentive(激励), they must be given a share in the company’s profits. This can be done through employee stock ownership plans(员工持股计划), bonuses, or rewards for efficiency and productivity. Finally, when a plant can no longer operate at a profit, the workers should be given the opportunity to purchase the plant and run it themselves.

32. What can we learn about managers from Paragraph 1?

A. They were not quite qualified.

B. They disliked “suggestion boxes”.

C. They never consulted the labor force.

D. They Seldom obtained workers’ opinions.

33.In recent years, many management specialists have been arguing that workers _____.

A. are not sellers of the products any longer

B. should have a say in management of the company

C. are less affected by company decisions than before

D. are able to make the final decisions for the company

34. According to the passage, what happened between 1980 and 1985?

A. Workers did not make necessary concessions.

B. Many companies were closed because of strikes.

C. Managers consulted workers before closing a plant.

D. About 5 million workers were laid off without advance notice.

35. If they are not given a voice in managerial decision making, workers _____.

A. cannot get a share in the company’s profits

B. will not have the opportunity to purchase the plant

C. may lack the incentive to increase their productivity

D. can still get bonuses for efficiency and productivity

第二节(共5小题;每小题3分,满分15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。

Out of work? 36_ Volunteering can help! Let’s explore how volunteering can help in the process of getting a job.

V olunteering is a great addition to your resume(简历). V olunteer activities on your resume show you are caring. But it's not just about past volunteering. _ 37_ That s attractive to employers V olunteering provides a connection during an interview. Your volunteering might result in something in common with your interviewer. Pe rhaps you’ve just cleaned up a ri ver in California. Perhaps your interviewer is an environmentalist. That’s a great icebreaker.

_ 38_ General skills such as teamwork are needed in any job. V olunteering is good practice! You may even be able to put more skills on your resume, ranging from cooking to policy-making. It’s a grand

opportunity for growth, professionally as well as personally.

V olunteering presents networking opportunities. V olunteering can connect you to peers or more-advanced colleagues. Ask them about their current positions and if they like their work. If you are seriously interested, you could develop a relationship with them and discuss future career opportunities.

V olunteering lowers depression. 39 That’s especially good during a job se arch. Research indicates that volunteering increases the possibility of getting a job. For example, a study found that people who volunteered were 27 percent more likely to find employment. 40 When we start making the world a better place, new opportunities for employment will open up around you.

A. Don t worry!

B. Look before you leap!

C. V olunteering helps you learn important and practical skills.

D. Current volunteering shows you are still staying active and engaged.

E. Therefore, think less about being jobless and more about how you can give.

F. You might feel low about being unemployed, which is not going to help your job prospects.

G. In a survey by United Health Group, 78 percent of people who had volunteered in the previous year said that volunteering lowered their stress levels.

第三部分语言知识运用(共两节,满分45分)

第一节完形填空(共20小题;每小题2分,满分40分)

阅读下面的短文,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,并在答题卡上将该项涂黑。

Debra holds tightly to the railing(栏杆) as she walks down the stairs. These stairs belong to her 90-year-old grandmother, Nana Kaly. Debra has been coming to this 41 since the week she was born. Nana has 42 in this house for 50 years.

This is the house Nana got married in, where she had two 43 —Debra's father and aunt. Both were born here. 44 photos of her father as a young boy 45 on the wall. Photos of Debra hang there, too—pictures of her in the hospital on the day she was born. There's also a

photo of her father in the 46 at the age of five, in a hospital dress, smiling and eating ice cream.

Today, the family is 47 all these photos away. They are packing up everything and moving out. Nana has become too old to stay here all by herself now. She’s going to a new 48 . It’s called Pin Bluffs. It’s a complex of apartments, 49 the elderly, where people can 50 her.

There are three bedrooms upstairs. But recently, Nana took to sleeping on the 51 in the living room. She said the house was too big and 52 and that she didn't like going up and down the stairs. The truth is that she couldn't climb the stairs 53 anymore.

Last week, Nana lost her footing on the bottom stair. She 54 but didn't fall far. She wasn't hurt- thankfully- but the family knew it was time to get her a 55 place. So now Nana is being 56 to Pine Bluffs. In Pine Bluffs, there are no 57 stairs, no empty rooms.

In Nana’s new home, there will be a bus to 58 her to the supermarket or the doctor. She will have close 59 and neighbors. Nana won’t be lonely in her new home. But there won’t be any 60 there, either.

41A.shop B. house C. stair D. basement

42A.lived B. remained C. checked D. arrived

43A.daughters B. partners C. nephews D. children

44A.Old B. Big C. Pretty D. Clean

45A.pass B. turn C. count D. hang

46A.school B. office C. hospital D. park

47A.giving B. packing C. stealing D. throwing

48A.home B. city C. country D. club

49A.fortunately B. absolutely C. gradually D. specifically

50A.figure out B. take on C. look into D. care for

51A.ofa B. desk C. closet D. floor

52A.crowded B. empty C. noisy D. quiet

53A.efficiently B. clearly C. peacefully D. safely

54A.failed B. fell C. stood D. jumped

https://www.360docs.net/doc/2514661263.html,rger B. brighter C. smaller D. cheaper

56A.attended B. adapted C. pointed D. moved

57A.difficult B. comfortable C. beautiful D. different

58A.follow B. take C. catch D. hold

59A.colleagues B. doctors C. friends D. relatives

60A.friendships B. sympathies C. memories D. regrets

第二节(共10小题;每小题1.5分,满分15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。

I wonder 61 it would be like without the Internet. It’s how we keep in touch w ith

fiends, or find cool places to hang out.

But just as there are millions of sites to visit and fun things to do, there are also lots of sites 62 we waste time and even get into trouble. And just like in the real life, there are some people on the web who can take advantage 63 you either financially 64 physically.

Because users can 65 (easy) remain anonymous(匿名的), chat rooms often attract people interested in more than just friendly chatting. These people will sometimes ask other 66 (user) for information which shouldn't be given away. Usually, people who request 67 (person) information such as home addresses, phone numbers, and e-mail addresses use this information to fill mailboxes and answering machines with advertisements known as “spam”.

In some cases, though, this information may be used 68 (begin) improper relationships or to harm 69 person’s well-being. Such situations are rare, but they do happen.

Of course, the Internet 70 (be) home to millions of sites you can and should visit. And the web can offer users lots of information and knowledge at the touch of one’s finge rtips.

第四部分写作(共两节,满分35分)

第一节短文改错(共10小题;每小题l分,满分10分)

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下画一横线,并在该词下面写出修改后的词。

注意:1. 每处错误及其修改均仅限一词;

2. 只允许修改10处,多者(从第11处起)不计分。

Simply following the fashion trends or wearing expensive clothes will not help you get an unique style. However, a few simply, yet effective, tips can help you get your highlights. Here is one of them what will make you stand out among your peers. That is Be Yourself.

Why to be a second-rate version of anybody else when you can the first-rate version of yourself? Nothing will help you stand out of the crowd more than your originality so there can be only one you. Everyone has their own belief, way of thinking, mindset and experiences that shaped their style.

However, self-doubt and fear of disapproval drive much to abandon their ways and follow what everyone else is doing. Imitating other will make you just another face in a crowd. Break free from the conformist(盲目追随) approach of fashion and your style reflect your individuality.

第二节书面表达(满分25分)

假定你是李华。寒假去美国旅游期间,你为自己和家人在网上订了某宾馆的两间客房,但住进去却发现客房的实际情况与其在网上描述的严重不符。请你写封邮件向该宾馆负责人布莱克先生写一封投诉信。内容包括:

(1)客房面积比网上描述的小,设备破旧;

(2)其中一个客房的淋浴无法使用;

(3)要求赔偿。

注意:1.词数100左右;

2.可以适当增加细节,以使行文连贯。

英语(3.8)答案:

1.听力:1-5:CAACB6-10:BAACC11-15:BABCA16-20:BCBAC

2.阅读:21-25: DDACA 26-30: DBBAC 31-35: DDBDC 36-40:

ADCGE

3.完型:41-45: BAADD 46-50: CBCDB 51-55: AACDC 56-60:

CBBAD

4.语篇:61: what 62: where 63: of 64: or 65: easily

66: users 67: personal 68: to begin 69: a 70: is

5.改错:第一句:an—a

第二句:tip-tips

第三句:what-that

第五句:去掉to,can后加be 第六句:so-because

第七句:shaped-shape

第八句:much-many

第九句:other-others

第十句: of-to

6.作文:(略)

太原五中2017-2018学年度第二学期周练

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太原市2019年高三年级模拟试题(二) 理科综合能力测试生物试题 一、选择题 1.下列关于细胞代谢的叙述,正确的是() A. 类囊体薄膜上的类胡萝卜素主要吸收红光用于光合作用 B. 液泡主要存在于植物细胞中,可以调节植物细胞内的环境 C. 线粒体内[H]与O2结合的过程能使ADP含量增加 D. 核糖体能够合成具有生物活性的分泌蛋白 【答案】B 【解析】 分析】 各种细胞器的结构、功能 造车间”和“能量转换站”。

【详解】类囊体薄膜上的类胡萝卜素主要吸收蓝紫光用于光合作用,A错误;液泡主要存在于植物细胞,内有细胞液,可以调节细胞内的环境,B正确;线粒体是有氧呼吸的主要场所,线粒体内[H]与O2结合的过程能使ATP含量增加,C错误;核糖体上直接合成的是多肽,还没有生物活性,分泌蛋白一般经过内质网、高尔基体的加工后才具有生物活性,D错误。 2.下列有关物质进出细胞的说法,错误的是() A. 神经细胞静息时K+外流的方式和兴奋时Na+内流的方式相同 B. 二氧化碳出线粒体的方式和性激素进入靶细胞的方式相同 C. 突触小泡和囊泡都是依靠膜的流动性释放被运输的物质 D. 生长素极性运输的方式和维生素D进入细胞的方式相同 【答案】D 【解析】 【分析】 物质进出细胞的方式:

【详解】K +主要存在于细胞内液中,神经细胞静息时K +外流的 方式是协助扩散,Na +主要存在于细胞外液中,兴奋时Na +内流的方式是协助扩散,因此神经细胞静息时K +外流的方式和兴奋时Na +内流的方式相同,A 正确;二氧化碳出线粒体的方式和性激素(脂溶性小分子物质)进入靶细胞的方式都是自由扩散,因此二者的方式相同,B 正确;突触小泡和囊泡运输都属于胞吞或者胞吐的方式,因此都依靠膜的流动性释放被运输的物质,C 正确;生长素极性运输的方式为主动运输,维生素D 进入细胞的方式为自由扩散,因此二者的方式不同,D 错误。 3.中耕松土是农作物栽培的传统耕作措施,相关说法错误的是( ) A. 松土可以促进根对矿质元素的吸收,促进光合作用 B. 松土可以促进硝化细菌的代谢活动,合成更多的有机物 C. 松土使土壤中无机物含量减少,有机物含量增加 D. 松土能加速土壤中残枝败叶、动植物遗体的分解,生成更多的二氧化碳 【答案】C 【解析】 【分析】 给作物松土有以下作用: 1、增加土壤的透气性,促进根细胞有氧呼吸,促进对矿质营养的吸收; 2、促进土壤中硝化细菌的繁殖和氧化氨成硝酸,增加土壤的肥力; 3、促进固氮微生物的生长繁殖和固氮,增加土壤的肥力; 4、松土促进土壤中微生物的分解作用,加速土壤中枯枝落叶以及动物的遗体残骸的分解,分解后产生较多的无机盐和二氧化碳。 【详解】松土增加土壤中的空气,促进根细胞的有氧呼吸,释放更多能量,有利于矿质元素的吸收,促进光合作用,A 正确;松土能增加土壤中的空气,从而促进硝化细菌将氨态氮转化为硝态氮,有利于硝化细菌的化能合成作用,增加土壤的肥力,B 正确;松土促进微生物的分解作用,使土壤中有机物含量减少,无机物含量增加,C 错误;松土能加速微生物对土壤中残枝败叶、动植物遗体的

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