2017年高考分ab卷了吗,2017年高考b卷

1.高考a卷和b卷的区别

2.高考卷的A卷和B卷的区别

3.2021年高考分ab卷吗？

4.高考A.B卷是怎么分的？

5.黑龙江高考什么卷

6.2017年数学高考卷子的六道大题

　许多在眼前看来天大的事，都不是人生一战，而只是人生一站。确实高考备战让你们很辛苦，可是已经坚持了这么久，这就已经是胜利。祝高考成功!下面是我为大家推荐的河北英语高考题2017年，仅供大家参考!

河北英语高考题2017年

　第I卷

　注意事项：

　1.答第I卷前，考生务必将自己的姓名、准考证号填写在答题卡上

　2.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。如需改动，用橡皮擦干净后，再选涂其他答案标号。不能答在本试卷上，否则无效

　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，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. Where is Mary?

　A. In the classroom. B. In the library. C. On the playground.

　2. How much should the man pay for the tickets?

　A. $16. B. $12. C. $6

　3. Why can?t the woman give the man some help?

　A. She is quite busy now.

　B. She doesn?t like grammar.

　C. She is poor in grammar，too.

　4. What happened to Marx?

　A. He lost his way.

　B. He found his bike missing.

　C. He lost his wallet.

　5. Why did the man fail to attend the party?

　A. He forgot it.

　B. He didn?t know about the party.

　C. He wasn?t invited to the party.

　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、7题。

　6. Why must the man drive to work?

　A. It is the quickest way.

　B. He has to use his car after work.

　C. He lives too far from the subway.

　7. What?s the relationship between the speakers?

　A. Boss and employee.

　B. Grandmother and grandson.

　C. Teacher and student.

　听第7段材料，回答第8～9题。

　8. When is Alice?s birthday?

　A. Tomorrow. B. The day after tomorrow. C. Today.

　9. What will the two speakers buy for Alice?

　A. A recorder. B. Some flowers. C. A box of chocolates.

　听第8段材料，回答第10~12题。

　10. What does the woman do in the group?

　A. Play the piano. B. Play the violin. C. Sing for the group.

　11. Who is Miss Pearson?

　A. Leader of the group.B. Director of the group. C. Teacher of the group.

　12. How often does the group meet?

　A. Once a week. B. Twice a week. C. Every third week.

　听第9段材料，回答第13~16题。

　13. Who possibly is the woman?

　A. An air hostess. B. A native Indian. C. A travel agent.

　14. How long does the trip last?

　A. Seven days. B. Eight days. C. Nine days.

　15. What will the man probably do at the second stage?

　A. Do some shopping. B. Visit the Taj Mabal. C. See wild animals.

　16. What will the speakers do next?

　A. Say goodbye to each other.B. Find out the price. C. Go to India by air.

　听第10段材料，回答第17~20题。

　17. In what way does Jack like to travel?

　A. With a lot of people.

　B. With one or two good friends.

　C. All by himself.

　18. What does Helen prefer on holiday?

　A. Staying at home.

　B. Seeing famous places.

　C. Enjoying nature quietly.

　19. What does Bob like the best about travel?

　A. Making more friends. B. Buying what he wants. C. Seeing and learning.

　20. Who prefers to do shopping while traveling?

　A. Jack. B. Helen. C. Bob.

　第二部分阅读理解(共两节，满分40分)

　第一节(共15小题;每小题2分，满分30分)

　阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。

　A

　We have designed all our bank cards to make your life easier.

　Using your NatWest Service Card

　As a Switch card, it lets you pay for all sorts of goods and services, whenever you see the Switch logo. The money comes straight out of your account, so you can spend as much as you like as long as you have enough money (or an agreed overdraft (透支) to cover it). It is also a cheque guarantee card for up to the amount shown on the card. And it gives you free access to your money from over 31,000 cash machines across the UK.

　Using your NatWest Cash Card

　You can use your Cash Card as a Solo card to pay for goods and services wherever you see the Solo logo. It can also give you access to your account and your cash from over 31,000 cash machines nationwide. You can spend or withdraw what you have in your account, or as much as your agreed overdraft limit.

　Using your cards abroad

　You can also use your Service Card and Cash Card when you?re abroad. You can withdraw cash at cash machines and pay for goods and services wherever you see the Cirrus or Maestro logo displayed.

　We take a commission charge (手续费) of 2.25% of each cash withdrawal you make (up to￡4) and a commission charge of 75 pence every time you use Maestro to pay for goods or services. We also apply a foreign-exchange transaction fee of 2.65%.

　Using your NatWest Credit Card

　With your credit card you can do the following:

　* Pay for goods and services and enjoy up to 56 days? interest-free credit.

　* Pay in over 24 million shops worldwide that display the MasterCard or Visa logos.

　* Collect one AIR MILE for every￡20 of spending that appears on your statement (结算单). (This does not include foreign currency or traveler?s cheques bought, interest and other charges.)

　21. If you carry the Service Card or the Cash Card, ________.

　A. you can use it to guarantee things as you wish

　B. you can draw your money from cash machines conveniently

　C. you can spend as much money as you like without a limit

　D. you have to pay some extra money when you pay for services in the UK

　22. If you withdraw￡200 from a cash machine abroad, you will be charged ________.

　A. ￡4 B. ￡4.5 C. ￡5.25 D. ￡5.3

　23. Which of the following is TRUE about using your NatWest Credit Card?

　A. You have to pay back with interest within 56 days.

　B. You can use the card in any shop across the world.

　C. You will be charged some interest beyond two months.

　D. You will gain one air mile if you spend ￡20 on traveller?s cheques.

　24. The purpose of the passage is to show you how to ________.

　A. pay for goods with your cards B. use your cards abroad

　C. draw cash with your cards D. play your cards right

　B

　Once when I was facing a decision that involved high risk, I went to a friend. He looked at me for a moment, and then wrote a sentence containing the best advice I?ve ever had: Be bold and brave ? and mighty (强大的) forces will come to your aid.

　Those words made me see clearly that when I had fallen short in the past, it was seldom because I had tried and failed. It was usually because I had let fear of failure stop me from trying at all. On the other hand, whenever I had plunged into deep water, forced by courage or circumstance, I had always been able to swim until I got my feet on the ground again.

　Boldness means a decision to bite off more than you can eat. And there is nothing mysterious about the mighty forces. They are potential powers we possess: energy, skill, sound judgment, creative ideas ? even physical strength greater than most of us realize.

　Admittedly, those mighty forces are spiritual ones. But they are more important than physical ones. A college classmate of mine, Tim, was an excellent football player, even though he weighed much less than the average player. ?In one game I suddenly found myself confronting a huge player, who had nothing but me between him and our goal line,? said Tim. ?I was so frightened that I closed my eyes and desperately threw myself at that guy like a bullet ? and stopped him cold.?

　Boldness ? a willingness to extend yourself to the extreme?is not one that can be acquired overnight. But it can be taught to children and developed in adults. Confidence builds up. Surely, there will be setbacks (挫折) and disappointments in life; boldness in itself is no guarantee of success. But the person who tries to do something and fails is a lot better off than the person who tries to do nothing and succeeds.

　So, always try to live a little bit beyond your abilities?and you?ll find your abilities are greater than you ever dreamed.

　25. Why was the author sometimes unable to reach his goal in the past?

　A. He faced huge risks. B. He lacked mighty forces.

　C. Fear prevented him from trying. D. Failure blocked his way to success.

　26. What is the implied meaning of the underlined part?

　A. Swallow more than you can digest. B. Act slightly above your abilities.

　C. Develop more mysterious powers. D. Learn to make creative decisions.

　27. What can be learned from Paragraph 5?

　A. Confidence grows more rapidly in adults. B. Trying without success is meaningless.

　C. Repeated failure creates a better life. D. Boldness can be gained little by little.

　C

　The wallet is heading for extinction. As a day-to-day essential, it will die off with the generation who read print newspapers. The kind of shopping-where you hand over notes and count out change in return?now happens only in the most minor of our retail encounters，like buying a bar of chocolate or a pint of milk from a corner shop. At the shops where you spend any real money, that money is increasingly abstracted. And this is more and more true, the higher up the scale you go. At the most cutting-edge retail stores?Victoria Beckham on Dover Street, for instance?you don't go and stand at any kind of cash register when you decide to pay. The staff are equipped with iPads to take your payment while you relax on a sofa.

　Which is nothing more or less than excellent service, if you have the money. But across society, the abstraction(抽象) of the idea of cash makes me uneasy. Maybe I'm just old-fashioned. But earning money isn't quick or easy for most of us. Isn't it a bit incredible that spending it should happen in half a blink(眨眼)of an eye? Doesn't a wallet?that time-honoured Friday-night feeling of pleasing, promising fatness?represent something that matters?

　But I'll leave the economics to the experts. What bothers me about the death of the wallet is the change it represents in our physical environment. Everything about the look and feel of a wallet?the way the fastenings and materials wear and tear and loosen with age, the plastic and paper and gold and silver, and handwritten phone numbers and printed cinema tickets?is the very opposite of what our world is becoming. The opposite of a wallet is a smartphone or an iPad. The rounded edges, cool glass, smooth and unknowable as pebble(鹅卵石). Instead of digging through pieces of paper and peering into corners, we move our fingers left and right. No more counting out coins. Show your wallet, if you still have one. It may not be here much longer.

　28. What is happening to the wallet?

　A. It is disappearing. B. It is being fattened.

　C. It is becoming costly. D. It is changing in style.

　29. What makes the author feel uncomfortable nowadays?

　A. Saving money is becoming a thing of the past.

　B. The pleasing Friday-night feeling is fading.

　C. Earning money is getting more difficult.

　D. Spending money is so fast and easy.

　30. Why does the author choose to write about what's happening to the wallet?

　A. It represents a change in the modern world.

　B. It has something to do with everybody's life.

　C. It marks the end of a time-honoured tradition.

　D. It is the concern of contemporary economists.

　31. What can we infer from the passage about the author?

　A. He is resistant to social changes.

　B. He is against technological progress.

　C. He feels reluctant to part with the traditional wallet.

　D. He feels insecure in the ever-changing modern world.

高考a卷和b卷的区别

2023湖北高考不分ab卷。

如下：

高考中采用AB卷，指的是考场中一部分考生分发A卷，另一部分考生分发B卷，二者之间题号相同，但选项顺序不同，因此AB卷的标准答案也是不同的。

近年来，随着考试管理手段现代化的不断推进，尤其是标准化考点建设和网上视频巡查系统的不断升级，继续实行AB卷的意义不大，已有部分省份高考陆续取消了AB分卷。

河北：从2019年起，河北高考试卷取消AB卷。同时，为了保障试卷安全，根据规定，试卷运送车辆必须加装视频监控设备。在试卷运送过程中，车辆内的视频监控设备必须对试卷存放区域进行全方位、无死角监控、录像可回放。

陕西：据陕西日报2017年6月6日报道，6月5日省招生办举行新闻通气会，会上提到，当年高考考试中最大的变化是：各科考试不再分AB卷。

省招办经慎重研究并报上级同意，从2017年起，陕西省高考试卷不再区分AB卷型。为确保考试顺利实施，有效遏制考场内旁窥等违规行为，今年高考各地将进一步加强监考和网上视频巡查力度，各类违纪、作弊行为，一经发现，将从严从重处理。

湖北：据咸宁发布2017年5月31日消息，针对2017年高考取消AB卷，取消统一文具等新变化，着力强化监考队伍建设，强化考试管理。武穴发布在2017年6月1日也有相同报道：湖北省武穴市从2017年开始取消了高考AB卷。

2021年广东高考仍分AB卷：2021年是广东实行新高考的第一年，关于考试的安排也有不少变化，不过在AB卷型上仍旧不变。

2021年6月5日，中山市教育和体育局发布中山市2021年高考暖心宝典，其中便提到，2021年广东高考依然实行A、B分卷考试。

高考卷的A卷和B卷的区别

高考a卷和b卷的区别介绍如下：

1、题号不同

将不强调难易次序的题目前后错位排列，打乱先后次序。

2、答题卡不同

答题卡选涂项排列方向不同，一个是横着的一个是竖着的。

3、选项不同

对不允许打乱先后次序的题目进行答案选项的错位。

4、排版不同

对默写、填空、问答等非选择题的位置进行排版错位。字体、字号的不同，行距、间距的不一，分栏格式的差异，横向、纵向的排列，位置的不同摆放等。

扩展资料：

A，B卷里又分一个a卷，b卷，这里的ab卷不是上下卷，是单双卷。

就是说末尾号是单的要a卷或b卷。

末尾号是双数的就要b卷或a卷，这样可防止作弊。

高考的AB卷就是对应答题纸的编号顺序是不同的，但题目是相同的。

高考注意事项：

1、掌握时间心不慌

掌握考试时间，迟到15分钟不得进场，一般要提早20分钟，充分利用开考前的五分钟，认真倾听监考老师宣读有关规则和注意事项，以免事后惹麻烦。

接过考卷，先认真填写姓名、学校、准考证号、座号等，只须检查一下有没有漏页、白页即可，无须把题目从头到底地详细看一遍，只须看清解题的要求，试卷页数，大致了解一下试题份量、难度等。

2、考好第一科

进入考场，调整一下姿势，舒适地坐在位子上；摆好文具，戴眼镜的把眼镜摘下擦一擦，尽快进入角色；此时心中想着的只是考试的注意事项，不要再多虑考试的结果，成败、得失。

第一科的考试很重要，但开考前不宜过早地在教室外等待考试，可以在操场等场所有意识地放松。做到镇定、自如，不慌张。

如果出现心律轻快，手脚发抖等紧张现象，也属正常现象，可以适当进行调节，如深呼吸，同时告诫自己别紧张，不害怕。

3、先易后难不慌忙

先易后难：按照题号顺序审题，会一道就做一道，一时不会做的就先跳过去（有疑问的、不会的在草稿纸上做记录），这样做的好处是：

（1）使自己很快进入答题状态。

（2）随着答题数的增加，心中越来越有数，信心不断增强，智力操作效率将越来越高，难题或许不会再难了。

4、舍车保帅亦淡然

舍车保帅，自我暗示，一套卷，低、中、高三种难度都有。会做的题力求全对，避免会而不对，对而不全，对中档题要力拼，尽量多拿分，分分必得。对于自己一点都不会的高难度题，要敢于果断放弃，因为在这方面停留，没有任何价值和必要。

5、离开考场学会及时遗忘。

及时遗忘，考后立即离开试场，不要在考场外校对答案，不要“看别人脸上的天气预报”，因为太多不准。做到考完一门，忘掉一门，不回忆，不细想，不追究答案，不在已考的科目上浪费时间，集中精力对付下一门。

2021年高考分ab卷吗？

A卷要稍微简单一点，全面基础化；B卷要将难度升高，是提高卷。AB卷的难度只是略有差异，而且是A卷、B卷都是随机划分的。

所谓A卷B卷，并不是指试卷内容有什么区别，两种试卷的考题完全相同，只在试卷版式上有所不同。A卷是为机读阅卷设计的，B卷则需人工阅卷。

因为A卷需扫描到计算机中由老师在电脑上评阅打分，所以老师们提醒学生，答A卷试题要选用颜色较深的笔，字迹要清晰，以免扫描时出现误差。

根据课程改革实验的需要，试卷分为“大纲卷”和“课标卷”。“课标卷”又分为A卷和B卷两种，考试科目、分数权重等方面要求与“大纲卷”保持一致。

高考A.B卷是怎么分的？

有部分省份不分ab卷，河北省，陕西省，湖北省明确规定不分ab卷。

从2019年起，河北高考试卷取消AB卷。同时，为了保障试卷安全，根据规定，试卷运送车辆必须加装视频监控设备。在试卷运送过程中，车辆内的视频监控设备必须对试卷存放区域进行全方位、无死角监控、录像可回放。

据陕西日报2017年6月6日报道，6月5日省招生办举行新闻通气会，会上提到，当年高考考试中最大的变化是：各科考试不再分AB卷。

据咸宁发布2017年5月31日消息，针对2017年高考取消AB卷，取消统一文具等新变化，着力强化监考队伍建设，强化考试管理。

取消AB卷之后，考生无需填涂AB卷型，也能杜绝考生因漏涂误涂而丢分的情况。不过，卷型的统一后，高考考场的监考力度也势必会加强。

高考中采用AB卷，指的是考场中一部分考生分发A卷，另一部分考生分发B卷，二者之间题号相同，但选项顺序不同，因此AB卷的标准答案也是不同的。近年来，随着考试管理手段现代化的不断推进，尤其是标准化考点建设和网上视频巡查系统的不断升级，继续实行AB卷的意义不大，已有部分省份高考陆续取消了AB分卷。

对考生来说，高考在一定程度上决定了人生的道路，是人生一次重大的转折点，这使得许多考生存在着巨大的心理压力，如果说考生掌握的知识水平是高考成功的基础，是高考成功的硬件，那么考生考前心态的调整是高考成功的软件。如果没有良好的心态，考生就难以在考场上正常发挥，甚至可能导致高考失败。

黑龙江高考什么卷

一般情况下进入考场后从门口开始一条龙式排号，一般单数号为A卷双数号为B卷，可以简单划一下，如果你拿到的是A卷，那么前后左右都会是B卷，减少了作弊的可能(斜对角的为是A卷)。考卷分ab卷只是题的顺序不一样而已,题都是一样的。

高考是标准化的全国统考，公平、公正、公开、统一是基本的要求。每个考场均为30名考生，其中使用A卷15人，使用B卷15人，并且将他们穿插起来，以“之”字形发放不同试卷，这样做很大程度上是为了防止近距离作弊。

举例来说，如果所有考生使用顺序相同的试卷，就容易出现窥看到别人答题卡的情况，而A、B卷的交叉使用，保证了A卷包围B卷，B卷包围A卷的情况，有效防止了近距离作弊。

扩展资料

答题时首先要审清题目，看清题目的内容，抓住题干中的关键词，了解答题的要求。很多题目的题干中不仅含有知识要点，也提示着答题的方法、过程和情感态度与价值观。答题时依据这些提示，一一落实，就不会出现大方向上的错误。

题干上有关肯定与否定、程度的强与弱、范围的大与小等关键词不能忽视。有许多题目可 以有多种解题方法，特别是综合类题目，试卷要求用哪种知识和方法来解决，你一定要看清楚;有些题目后面规定了答案的字数，这些细节方面的要求也要看清楚。

在答题过程中，除了正确运用公式、定理外，还要善于从题目所给的材料中找到解题依据。像高考这样的规范程度极高的考试，卷面往往没有多余的信息，材料的副标题、试题后面的注解，都是帮助你答题的有效信息，切切不可忽视。

遇到有字数限制的题目，要先筛选答题要点，再组织推敲语言，以免本末倒置，挂一漏万。答题的过程要完整规范。

提笔书写前，还要审视一下卷面答题的部位，估计将题目解答完大致需要多少空间，统筹安排解题过程的布局，这样既可避免出现在所给的部位写不下的情况，又可以使解题过程清晰，卷面整洁、美观。

2017年数学高考卷子的六道大题

黑龙江高考采用全国卷B。

1.简介

根据教育部的规定，全国所有高考考场试题随机抽取一个省份的卷子进行命题。

2022年全国普通高中招生全国统一考试（以下简称2022年高考）中，黑龙江省担任了数学（理科）、历史、地理三门科目的命题省份。下面让我们更深入地了解2022年黑龙江高考。

2.命题情况

2022年高考的命题工作在2019年就已经启动，时长三年。经过层层筛选和评估，最终确定了数学（理科）、历史、地理三个科目的命题省份为黑龙江。此次命题任务由来自全国各地的500名专家组成的命题组共同完成。

3.命题标准

根据教育部的要求，高考考题应具有科学性、实用性、普及性、公平性等特点，要符合考试大纲及相关考试标准和评价体系，确保难度适宜、能够有效检验考生的知识和能力水平。同时，在命题过程中需要保密，遵守相关法律法规，确保试题安全。

4.影响因素

虽然命题工作非常严谨，但考试结果也受到多种因素的影响。首先是考生成绩的分布情况，如果考生整体成绩较高或较低，会影响到后续录取线的调整。

其次是考试环境和监考情况，如果存在作弊或者违规行为，也会对成绩产生影响。此外，考生的状态、心态、健康状况等也会对考试成绩产生影响。

5.拓展知识：高考改革

高考是我国教育制度中非常重要的一个环节，近年来也在不断进行改革。2014年，教育部发布《关于深化考试招生制度改革的实施意见》，提出了“以能力为核心、以素质为基础”的改革思路。

2017年，全国普通高中招生全国统一考试实现了网上报名和考试，进一步提高了考试的公平性和信息化水平。

6.总结

2022年黑龙江高考数学（理科）、历史、地理三门科目的命题由500名专家组成的命题组共同完成。高考命题需要符合相关要求，保证试题的科学性、实用性、普及性和公平性，确保难度适宜。

高考成绩不仅受到命题因素的影响，也受到其他各种因素的影响。随着高考改革的不断深入，考试制度将更加科学合理，提高教育质量和公平性。

17.（12分）

△ABC的内角A，B，C的对边分别为a，b，c，已知△ABC的面积为

（1）求sinBsinC;

（2）若6cosBcosC=1,a=3,求△ABC的周长

18.（12分）

如图，在四棱锥P-ABCD中，AB//CD，且

(1)证明：平面PAB⊥平面PAD；

(2)若PA=PD=AB=DC,,求二面角A-PB-C的余弦值.

19．（12分）

为了监控某种零件的一条生产线的生产过程，检验员每天从该生产线上随机抽取16个零件，并测量其尺寸（单位：cm）．根据长期生产经验，可以认为这条生产线正常状态下生产的零件的尺寸服从正态分布N(μ,σ?)．

（1）假设生产状态正常，记X表示一天内抽取的16个零件中其尺寸在(μ–3σ,μ+3σ)之外的零件数，求P(X≥1)及X的数学期望；学科&网

（2）一天内抽检零件中，如果出现了尺寸在(μ–3σ,μ+3σ)之外的零件，就认为这条生产线在这一天的生产过程可能出现了异常情况，需对当天的生产过程进行检查．

（ⅰ）试说明上述监控生产过程方法的合理性；

（ⅱ）下面是检验员在一天内抽取的16个零件的尺寸：

9.95

10.12

9.96

9.96

10.01

9.92

9.98

10.04

10.26

9.91

10.13

10.02

9.22

10.04

10.05

9.95

经计算得，，其中xi为抽取的第i个零件的尺寸，i=1,2,…,16．

用样本平均数作为μ的估计值，用样本标准差s作为σ的估计值，利用估计值判断是否需对当天的生产过程进行检查？剔除之外的数据，用剩下的数据估计μ和σ（精确到0.01）．

附：若随机变量Z服从正态分布N(μ,σ2)，则P(μ–3σ<Z<μ+3σ)=0.997?4，0.997?416≈0.959?2，．

20.（12分）

已知椭圆C：x?/a?+y?/b?=1（a>b>0），四点P1（1,1），P2（0,1），P3（–1，√3/2），P4（1，√3/2）中恰有三点在椭圆C上.

（1）求C的方程；

（2）设直线l不经过P2点且与C相交于A，B两点.若直线P2A与直线P2B的斜率的和为–1，证明：l过定点.

21.（12分）

已知函数=ae?^x+（a﹣2）e^x﹣x.

（1）?讨论的单调性；

（2）?若有两个零点，求a的取值范围.

（二）选考题：共10分。

请考生在第22、23题中任选一题作答，如果多做，则按所做的第一题计分。

22．[选修4-4，坐标系与参数方程]（10分）

在直角坐标系xOy中，曲线C的参数方程为（θ为参数），直线l的参数方程为.

（1）若a=-1，求C与l的交点坐标；

（2）若C上的点到l的距离的最大值为，求a.

23.[选修4—5：不等式选讲]（10分）

已知函数f（x）=–x?+ax+4，g(x)=│x+1│+│x–1│.

（1）当a=1时，求不等式f（x）≥g（x）的解集；

（2）若不等式f（x）≥g（x）的解集包含[–1，1]，求a的取值范围.