专升本英语作文练习题

2024-09-27

专升本英语作文练习题(共10篇)

专升本英语作文练习题 篇1

成人高考专升本《英语》完型填空练习题

Are you carrying too much on your back at school? Lots of kids(孩子) at the same age as you are. Not only are students in China 1 from this problem, but kids in the United States are 2 fed up with(饱受……之苦) heavy school bags.

Experts are starting to 3 that more and more young students are having back and neck problems as a result of school bags 4 too heavy for them. “It’s hard for me to get up the 5___ with my bag because it’s so heavy,” said Rich Hammond, 6 11-year-old student in the US. Rick is among the students who have 7 backpacks(背包)with two straps(带子) to carry them, 8 a number of other students choose rolling backpacks. But even with rolling backpacks, 9 up stairs and buses with them is 10 a problem for kids. Many of them have hurt their knees, backs or necks because of heavy school bags.

But how much is too 11 ? Experts say students should carry 12 more than 10 to 15 per cent of their own body weight. Scott Bautch, a Wisconsin 13 doctor, said kids under 4th grade should 14 with 10 per cent. But it’s also important that older kids don’t go 15 15 percent, because their bones are still growing. Bautch explained that there are other injuries caused by backpacks. “Kids are 16 their balance and falling down with these backpacks,” he saiD.

Parents and teachers are starting to tell the kids to only take 17 library books they will be reading that night. Some teachers are using worksheets(作业纸) or 18 workbooks for students to take home. One of the best answers is, as some 19 themselves suggested, to have no homework 20 !

1. A.meeting B.facing C.experiencing D.suffering

2. A.already B.always C.yet D.also

3. A.explain B.say C.worry D.announce

4. A.being B.be C.are D.is

5. A.schools B.stairs C.houses D.homes

6. A.this B.that C.a D.an

7. A.special B.unusual C.ordinary D.regular

8. A.when B.but C.then D.and

9. A.getting B.climbing C.going D.turning

10.A.only B.still C.even D.just

11.A.more B.very C.much D.many

12.A.no B.not C.any D.much

13.A.children B.student C.bag D.back

14.A.carry B.stay C.take D.bring

15.A.about B.under C.beyond D.before

16.A.keeping B.missing C.losing D.making

17.A.home B.class C.school D.city

18.A.valuable B.thin C.important D.interesting

19.A.reports B. teachers C.parents D.kids

20.A.at all B.after all C.in all D.for all

专升本应用文写作练习题 篇2

一、单项选择题

(;每小题1分,共10分)

1、国务院要将自己制定的《国家行政机关公文处理办法》发给各省、自治区、直辖市人民政府、国务院各部委、各直属机关施行,应该用的公文是()A指示性通知

B发布型通知C批转性通知

D转发性通知

2、下列的文书中不属于计划范畴的是()A规定

B规划

C设想

D方案

3、具有编年性、记事性、简明性特点的文书是 A调查报告

B启事

C大事记

D会议记录

4、具有行文关系多样性、作用多样性和效力的灵活性的特点的公文是()A函

B意见

C会议记录

D通知

5、简报属于

()A法定公文

B事务文书

C专用文书

D公关礼仪文书

6、下列各项中不属于议案的特点的一项是

()A调查的真实性

B制作主体的法定性

C提交的时限性

D内容的特定性

7、各方当事人共同发生权利义务所指的对象是

()A数量

B质量

C价款

D标的

8、下面各项中不属于通告的特点的一项是()

A庄重性

B广泛性

C专业性

D强制性

9、下列各项中不属于简报的结构格式的一项是

()A由报头

B正文

C报身

D报尾

10、省政府的劳动厅向本省的X市劳动局行文,他们之间的关系是

()A直接隶属关系

B间接的隶属关系

C业务指导关系

D不相隶属关系

二、多项选择题

1、根据《中华人民共和国合同法》规定,产品质量标准包括

()

A验收标准

B国家标准

C部颁标准

D企业标准

E协商标准

2、会议纪要的特点有

()

A纪实性

B经常性

C概括性

D指导性

3、法定公文的特点有()

A作者的法定性

B鲜明的政治性

C 明确的工具性

D体式的规范性

E功能的权威性

4、下列各项中属于简报范畴的有

()

A情况反映

BXX研究

C工作动态

D内部参考

E情况调查

5、总结的特点有()

A规律性

B 客观性

C个体性

D叙事性

E结论性

三、判断题

1、买卖合同中卖方的履行期限是指交货的日期、买方的履行期限是指交款的日期(2、会议记录与会议纪要都是会议的产物,它们的制作的时间是相同的()

3、述职报告的标题由任职时间、职务和文种组成()

4、函可以用于请求批准和答复审批事项()

5、南山市金牛县人民政府向该市供电局请求,增加枯水期用电指标,行文该用请示(6、国家机关、企事业单位、社会团体都可以使用公告()))

7、批转型通知所转的公文置于成文日期之后,版记之前,不作附件处理()

8、法定公文的撰稿人不是公文的作者、只是机关或机关负责人的代笔人()

9、每份公文都必须标注份号

()

10、文件的印制日期就是成文日期

()

11、通知具有运用范围广和使用频率高的特点

()

11、按行文方向,通知可分为平行通知和下行通知

()

12、合同的违约责任由当事人双方根据情况决定是否签定

()

12、公关礼仪文书应追求行文的亲和力

()

13、演讲稿具有语言通俗,口语化的特点

()

13、“启事”也可以写作“启示”

()

四、名词术语解释

1、简报

2、公告

3、议案

4、述职报告

五、简答题

1、表彰通报的正文内容有哪几个层次?

2、简述订立合同的原则有哪些?

3、简述工作报告的正文的主要内容。

4、通知与通报的区别是什么?

5、法定公文有哪些特点?

6、简述会议纪要与会议记录的异同。

六、修改题

(一)列条指出下边的这份合同存在什么问题

合 同 XXX化工厂X生产车间(甲方)XX市建筑公司业务科(乙方)

为扩建XX化工厂厂房,经双方协商,订立本合同。

1、甲方委托乙方扩建厂房一座,由乙方全面建造。

2、全部建筑费(包括材料、人工)壹拾贰万柒千元。XX化工厂在订立合同后先交一部分建筑费,其余在厂房扩建后抓紧归还所欠部分,3、工期待乙方筹备就绪后立即开始,力争三月中旬开工,争取十一月左右交活。

4、建筑材料由乙方全面负责筹备。

5、本合同一式二份,双方各执一份。

X化工厂(公章)

法人代表:章名全(私章)X市建筑工程公司业务科

科长:XX

2004年6月8日

(二)指出下面这份起诉状存在的问题(什么地方错、是什么错)

民事起诉书

南江市X区人民法院:

被告:刘天赐,男,32岁,住X区X街X号

原告:罗开华,女,65岁,X区大东乡农民。事实与理由

被告乃原告的儿子。被告8岁时父亲去世,母亲一个人把他抚养大,送他上了大学。大学毕业后,工资收入不薄,未婚前曾向其母支付过两年的抚养费。结婚后再也不管母亲的死活。现在原告重病在床,生活不能自理,无人照顾。俗话说,养儿防老。特要求被告承担原告的一切生活费用。

此致

敬礼

具状人:罗开华2002、12、3、(三)阅读下文,按后面要求答题

某某县地税局

重建税务所办公楼的请示报告

某某市地税局、城建局、国土局:

我局所属某某镇、某某镇、某某镇三个税务所,因受灾被洪水冲毁。现决定重建三个税务所办公楼3幢,建筑面积1200平方米,用作办公室和职工宿舍。共需资金150万元,扩征土地3亩。

特此报告。

(印章)

2005年11月10

(四)请指出下边这份启事存在的问题。

寻找伯父启示

我的伯父叫张全金,是从河南乡下老家来的。3月27日我带他到市人民医院看病。走到大街上,由于人多而走丢失。我很着急,我们全家都很着急。我想请大家帮忙,有谁看见我伯父,请打电话到我家。请大家一定帮忙。我家住在河西区胜利街,我叫张明才。

此致 敬礼

04年6月30日日

(五)修改下列标题

1、XX县关于贪污腐化的请示报告

2、中国石化总公司关于同意增加定员的批复函

3、X县税务局关于通知征收2001私人机动车使用牌照税

4、X省药材公司关于解决犀牛角问题的请示报告

5、X市工业局关于职工高等学校教师职称审批问题的报告

6、X职业学校关于建立实验商场申请营业执照的请示

7、中国人民银行北碚区分行关于调整储蓄利率的公告

七、写作题

根据下边提供的材料写一份符合要求的公文(标题:完全式标题)

1、X市公安局和工商行政管理局根据国家公安部《关于严禁非法传销的通知》制定了相关措施制止本市的非法传销活动。并规定非法传销活动由该市工商行政管理局依法查处。违反治安管理的,由公安机关依法查处。因为最近本市的非法传销活动十分猖獗,严重影响了社会治安。有的机关干部挪用公款搞传销;有的全日制大学生因参与传销活动荒废了学业;有的甚至被骗而无法回校上课。有的老大妈将一生的积蓄投入传销,血本无归而自杀。有的搞非法传销血本无归铤而走险,走上抢劫、杀人的犯罪道路;有的黑中介机构以介绍工作为由骗人入伙搞传销,从中谋取暴利;有人专门为搞非法传销提供场所,从中获利。

2、根据要求作文

XX年8月齐家县遭受了严重的洪灾,该县的老年活动中心被冲垮了,现该县民政局拟重建老年活动中心。但资金缺乏,请求县政府支援。A请以县民政局的名义向上级行文。

B请以县政府的名义行文,对县民政局的请求给予答复。

3、根据所给材料写一份公文。

20004年10月中央军委授予中国人民解放军空军X部杨利伟同志“航天英雄”的光荣称号。请以中央军委的名义行文

专升本英语作文 篇3

But we just noticed old people‘s material life. In fact old people‘s mental life is more important to them. Because old people are very lonely. I have three methods for this question. Firstly, young people should communicate to old people. They should exchange their ideas. Then they can understand each other more easily. The old people may be happier.

Secondly, old people also should understand young people‘s pressure. They should know why the young people can‘t talk with them.

专升本英语作文练习题 篇4

表示重要、必要、困难、方便、可能

1)It is important(necessary,difficult,convenient,possible)for sb.to

do sth.

2)We think it necessary to do sth.

3)It plays an important role in our life.

例如:

Computers are now being used everywhere,whether in the government,in schools or in business.Soon,computers will be found in every home,too.We have good reason to say that computers are playing an increasingly important role in our life

and we have stepped into the Computer Age.

表示变化

1)Some changes have taken place in the past five years.

2)A great change will certainly be produced in the world’s communications.

3)The computer has brought about many changes in education.

例如:

Some changes have taken place in people’s diet in the past five years.The major reasons for these changes are not far to seek.Nowadays,more and more people are switching from grain to meat for protein,and from fruit and vegetable to milk

for vitamins.

表示比较

1)Compared with A,B...

2)I prefer to read rather than watch TV.

3)There is a striking contrast between them.

例如:

Compared with cars,bicycles have several advantages besides being

affordable.Firstly,they do not consume natural resources of petroleum.Secondly,they do not cause the pollution problem.Last but not least,they contribute to

people’s health by giving them due physical exercise

表示好处

1)It has the following advantages.

2)It does us a lot of good.

3)It benefits us quite a lot.

4)It is beneficial to us.

5)It is of great benefit to us.

例如:

Books are like friends.They can help us know the world better,and they can open our minds and widen our horizons.Therefore,reading extensively is of great

benefit to us.

表示原因

1)There are three reasons for this.

2)The reasons for this are as follows.

3)The reason for this is obvious.

4)The reason for this is not far to seek.

5)The reason for this is that...

6)We have good reason to believe that...

例如:

There are three reasons for the changes that have taken place in our life.Firstly,people’s living standard has been greatly improved.Secondly,most people are well paid,and they can afford what they need or like.Last but

not least,more and more people prefer to enjoy modern life.

注:如考生写第一个句子没有把握,可将其改写成两个句子。如:Great changes have taken place in our life. There are three reasons for this.这样写可以避免套用

中的表达失误。

表示坏处

1)It has more disadvantages than advantages.

2)It does us much harm.

3)It is harmful to us.

例如:

However,everything divides into two.Television can also be harmful to us.It can do harm to our health and make us lazy if we spend too much time watching

television.

表示措施

1)We should take some effective measures.

2)We should try our best to overcome(conquer)the difficulties.

3)We should do our utmost in doing sth.

4)We should solve the problems that we are confronted(faced)with.

例如:

The housing problem that we are confronted with is becoming more and more

serious.Therefore,we must take some effective measures to solve it.

表示事实、现状

1)We cannot ignore the fact that...

2)No one can deny the fact that...

3)There is no denying the fact that...

4)This is a phenomenon that many people are interested in.

5)However,that’s not the case.

例如:

We cannot ignore the fact that industrialization brings with it the problems of pollution.To solve these problems,we can start by educating the public about the hazards of pollution.The government on its part should also design stricter

laws to promote a cleaner environment.

表示数量

1)It has increased(decreased)from...to...

2)The population in this city has now increased(decreased)to 800,000.

3)The output of July in this factory increased by 15% compared with that of

January.

例如:

With the improvement of the living standard,the proportion of people’s income

spent on food has decreased while that spent on education has increased.

再如:

From the graph listed above,itcan be seen that student use of computers has increased from an average of less than two hours per week in 2008 to 20 hours in

专升本英语作文练习题 篇5

答:(1)全面认识公有制经济的含义。公有制经济不仅包括国有经济和集体经济,还包括混合所有制经济中的国有成分和集体成分。混合所有制经济是指由不同所有制经济,以控股、参股等不同方式投资形成法人财产,由企业法人进行经营的企业。

(2)公有制实现形式的多样化。①在社会主义市场经济条件下,公有制实现形式可以而且应当多样化。公有制可以采取独资企业、股分合作制、合作社、股份公司等形式,在经营方式上可以实行公有公营、公有民营、租赁或承包经营等方式。②根据公有制经济的产业性质、规模大小等特点寻找和发展多样化的实现形式,有利于筹集、扩充资本金,有利于强化产权约束,有利于调动劳动者的积极性,有利于提高企业和资本的运作效率,促进生产力发展。

2、简述在公有制为主体的条件下,多种所有制经济共同发展的必然性。

答:(1)发展多种所有制经济是由我国生产力状况决定的。我国生产力的现状是总体水平比较低,发展不平衡、层次比较多,与这种社会化程度差别很大的、不同层次的生产力相适应,客观上要求发展多种所有制经济。

(2)发展多种所有制经济是缓解我国现代化建设中各种矛盾的需要。我国是发展中国家,资金短缺和就业压力大是现代化进程中的难题,发展多种所有制经济是解决这一难题的有效途径。

(3)发展多种所有制经济是社会主义市场经济体制的客观要求。我国各种所有制经济实体是在进行市场化改革的过程中发展起来的,它们的发展一方面促进了市场机制和市场体系的发展;另一方面加强了市场经济的竞争格局,促进了各种所有制经济效率的提高和技术的进步。

3、我国社会主义初级阶段为什么要实行以按劳分配为主体、多种分配方式并存的分配制度?

答:社会主义初级阶段实行以按劳分配为主体,多种分配方式并存的分配制度,是由我国的社会经济条件决定的。

(1)生产方式决定分配方式,生产资料所有制结构决定分配结构。以公有制为主体,多种所有制经济长期共同发展的所有制结构,决定了以按劳分配为主体,多种分配方式并存的分配结构。

(2)公有制实现形式的多样化决定了分配形式的多样化。由于实行股份制、股份合作制、合作制、承包经营等形式,必然产生按劳分配以外的各种分配形式。

(3)社会主义市场经济体制的内在要求。发展社会主义市场经济,就必须遵循市场经济的规律,各种生产要素(土地、资本、劳动力、管理)等都要有相应的市场评价,这此生产要素的所有者都要获得相应的收入。

(4)市场经济中还需要有风险收入以及通过社会保障获得的收入,等等。

总之,社会主义初级阶段多种分配方式的存在,是多种所有制经济,多种经营方式、市场经济运行的内在机制等诸多因素综合作用的结果。

4、如何理解社会主义初级阶段的按生产要素分配?实行按生产要素分配的意义是什么?

答:(1)在社会主义经济条件下,生产要素包括资本、劳动力、土地、技术和信息等。按生产要素分配,是指按照进行物质资料生产时所投入的生产要素的数量和质量进行收益分配的一种方式。生产要素所有者投入各种生产要素,应该取得相应的收入,允许和鼓励生产要素参与收益分配,是同我国社会主义初级阶段的多种所有制经济共同发展相适应的,也是社会主义市场经济发展的必然要求。

(2)承认按生产要素分配的合法性,就是为了提高各种生产要素的使用效益。因为只有承认其合法性,允许生产要素所有者可以通过直接或间接投入,以劳动的价值分配到一定的收入,才能鼓励生产要素有效、合理地流动,得到优化配置,提高使用效率。

5、社会保障制度的内容和功能是什么?

答:(1)社会保障是指国家通过立法对居民收入进行分配和再分配,对社会成员特别是生活有特殊困难的人们的基本生活权利给予保障的社会安全制度。作为一种体系或一种制度社会保障是由社会救助、社会保险、社会福利和社会优抚等方面组成。社会保障制度的核心是社会保险。

成人高考专升本英语作文 篇6

你是Alice,你的朋友Bonnie很快就要到你的fabulous but tasted great, and my husband is always at home.I told my mother that you 乡间小屋拜访,但你却要出去一会儿。留一张便and I enjoyed it very much.Therefore, we would come already.条给她,告诉她食品在哪儿,告诉她一个人在屋would like to invite you to dinner at 7 p.m.Looking forward to seeing you.里时应注意些什么。May 18,2002Dear Bonnie:

this Friday at the Northwest Chinese restaurant to return your kindness and hospitality.Yours,Li Ming

你是高明,不能在下周一下午四点与李青女士想见。写一封信给她,内容应包括:2.解释你的原因;

4.写上一句你认为有必要写的话January 2, 2005Dear Li Qing:

I am writing to say I’m sorry that I will

I will be away for a while.The key to thePlease do come.cottage is under the doormat, and the food is

lock the door from inside at once.The cottage 内容包括:

is not quite safe from burglars.So I think2、你在他那里受到了热情款待。the saying is right “Where there is precaution, there is no danger”.Have a nice stay here.Yours,Alice3、信件末尾写上一句你认为必要的话。January 22,2005Dear Mr.Jefferson:

in the refrigerator.After entering the house, 你是王萍,写一封信给Jefferson先生。信件的1.向她表示歉意;

is far away from the nearest town, and the area1、一个月前,他邀请了你到他家过圣诞节。3.提出把约会时间推后三天;

I am writing to thank you for your not be able to go for the appointment at 4:00 kindness and hospitality I enjoyed during my p.m.on Monday next week.stay in your place.This morning I got an urgent phone call

你是张浩,一位办公室职员。有时感到乏味,很It is very kind of you to invite me to from my boss in Guangzhou, and he asked me 容易疲倦。你想加入一个俱乐部,改变一下这种spend my Christmas holiday in your palace to flight there at once to join him in an 状况,以便闲暇时间过的更快活。写了一封信给last month.The room you arranged for me in important 俱乐部经理介绍你的嗜好和兴趣。Dear Club Manager: enjoy my free time.become tired easily.Perhaps, I need to of your club.I have many hobbies and calligraphy and painting, dancing and singing.And I like going fishing, collecting stamps and raising flowers.business

negotiation.The

your house was quiet, clean and comfortable.Negotiation has something to do with the The food was very delicious.And visits to future of our company.I will have to stay They have not only broadened my horizon, but the appointment for three days till Thursday it is convenient for you, please come over O.K.to you.My apologies again.my place.Yours,Wang Ping

Your friendGao Ming

你是王蒙,你的邻居太吵了,你实在是受不了了。

I am writing to ask to join your club to local scenic spots were really wonderful.there for about a week.I hope to postponeI am a clerk.I often feel tense and also enriched my experience.By the way, if next week.Phone me and let me know if it is relax myself a bit.I hope to become a member and spend your Spring Festival this year inLooking forward to seeing you.interests.For example, I like photography,Thank you very much again.Besides, I am good at playing Chinese chess 你的朋友Glad要从另一个城市来看你。你将到写信给公寓楼管理员。内容包括: and cards.Please write back and tell me if 机场去接他。但出于某种原因,你不能去了,写1.什么使你受不了 there are some formalities that I will have 封信给他,解释原因,并告诉他如何到你家。2.你受到了什么影响 to go through.Thank you very much in advance.Looking forward to your reply.Yours,Zhang Hao

May 18,2004Dear Glad,3.希望他做些什么December 28, 2004

I am writing to say that I will not beDear Apartment Management Officer: able to meet you at the airport next MondayI am writing to complain about my morning.neighbor Mr.Black.disturbs my life.He has a party almost every

This morning my boss asked me to go toMr.Black lives next door to me, and he

你是Helen,要写一封信给Julie,对她和她的Shanghai on business tomorrow.It is 请他们,以答谢他们的盛情款待。Dear Julie:

丈夫昨日请你和你丈夫吃饭表示感谢,表示要回something very important for our company and day.During these parties, people are making

I will have to go.By the way, I will be back a lot of noise.They are dancing, laughing within 10 days.When you arrive, please take and shouting.They often do such silly

things till early morning.What’s more, when

Thank you very much for the dinner that Bus No.345 and get off at the East Bus

you invited my husband and I to yesterday.Station.The station is not far from my house they have drunk too much, they often quarrel

and fight against each other.I can’t put up with all these.I can’t sleep well at night and my kid can’t concentrate on his these things and respect others privacy.Looking forward to your reply.Faithfully,Wang Meng

假如你的朋友叫杨立,是优秀学生,校报请你写一篇介绍他的短文。他的基本情况是:现在读高二,是班长,是全班学习最好的,最喜欢学习英语和数学,爱好体育,课余常踢足球,还是学校游泳队队closer to nature and better for their health,life there is quieter and that country people are more studies.Please tell Mr.Black to stop all honest than city people.I would like to live in a city when I am young to earn enough money and I live in the countryside when I am old for having a quite life.员,经常帮助别人。Our Good Example

Yang Li is monitor of Class one, Senior Two.He studies very hard and is the best student

in our class.He is good Chinese, physics andcchemistry but enjoys English and mathematics best.He can speak English fluently.After school because of illness, he will go to his house to help him with the missed lessons.He is not only a good student, but also an active sportsman.He likes several kinds of sports.He often plays football after class.He is on the school swimming team, too.1.一些人喜欢住在城市,因为城市生活有许多便利。

2.但有些人喜欢住在农村。

3.我认为,……

成人高考专升本英语作文 篇7

1.假冒伪劣商品是个严重问题。

2.一些原因导致了这种现象。

3.为了扫除假冒伪劣商品,……

Fake Commodities

Fake and poor quality commodities are a serious problem. Many things can be faked such as soybean sauce, vinegar, bicycles, and many other things. The interests of consumers are affected, and many enterprises keep losing money because of cheap fake commodities.

There are some reasons for such a phenomenon. The major one is the desire of some people to “make easy money”。 These people think nothing of the law of the protection of intellectual property rights.

To get rid of fake and poor quality commodities, the government should educate people to obey the law of the protection of individual intellectual property rights and not to sell any fake goods. The government should punish severely and close down all the factories producing fake goods.

假冒伪劣商品

假的和劣质商品是一个严重的问题。很多事情可以伪造,如酱油、醋、自行车、和许多其他的`事情。消费者的利益受到影响,许多企业把失去的钱因为廉价的假冒伪劣商品。

这种现象有一些原因。主要是一些人的愿望“轻松赚钱”。这些人认为没有法律保护的知识产权。

专升本英语作文练习题 篇8

2014成人高考专升本英语作文范文:面试经验

how to succeed in a job interview1.面试在求职过程中的作用;2.取得面试成功的因素:仪表、举止谈吐、能力、专业知识、自信、实事求是……

专升本英语作文练习题 篇9

【热门推荐:】

how to succeed in the interview

nowadays, the interview has become indispensable in seeking a job.its success will determine whether or not you will get the job you applied.then how to succeed in a job interview?

专升本高等数学复习题15 篇10

一、(12%)判别下列级数的敛散性:

(1)

n1(n!)2(2n)!(2)

n1nnn(2n1)

二、(20%)证明

11xsinysinyx(1)f(x,y)

0xy0xy0(x,y)在原点(0,(0,0)的 极限是0.(2)g(x,y)xy

xy22在原点(0,0)不存在极限.xy

三、(10%)证明函数f(x,y)0xy0xy0在(0,0)存在两个偏导数,但是在(0,0)

不可微.四、(10%)求复合函数f(x,y),x2(st),yst的二阶偏导数.五、(12%)验证方程x3y3z32xyz6在点(1,1,2)的邻域存在以x,y为自变量的隐函数并求z

x与z

y.六、(10%)求函数z3x3y6xy的极值.七、(10%)求曲面zxy1在点(1,1,1)的切平面方程与法线的方程.2233

八、(10%).设f(x)1nn1

42x4x2(n0)(1)判定级数

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