英语ab级试题及答案

英语ab级试题及答案（精选5篇）

英语ab级试题及答案篇1

Directions: This part is to test your ability to use words and phrases correctly to construct meaningful and grammatically correct sentences.It consists of 2 sections.Section A

Directions: There are 10 incomplete statements here.You are required to complete each statement by choosing the appropriate answer from the 4 choices marked A), B), C)and D).You should mark the corresponding letter on the Answer Sheet with a single line through the center.16.Please keep a detailed ________ of the work that you have done.A)paper

B)idea

C)exercise

D)record

17.________ our great surprise, speak four foreign languages.A)Of

B)In

C)To

D)For

18.The department manager ________ a new plan to promote sales at the meeting.A)took away

B)put forward

C)looked after

D)got on

19.What he told me to do was ________ I should get fully prepared before the interview.A)what

B)if

C)which

D)that

20.When dealing with a ________ task, Alice always asks for help from people around her.A)difficult

B)wonderful

C)funny

D)simple

21.Location is the first thing customers consider when ________ to buy a house.A)planning

B)planned

C)to plan

D)having planned

22.Soft drink sales in this city have ________ by 8% compared with last year.A)picked

B)moved

C)increased

D)pushed

23.If I hadn’t attended an important meeting yesterday, I ________ to see you.A)will have come

B)would have come

C)have come

D)had come

24.To obtain a visa to enter that country for the first time, you need to apply ________.A)in part

B)in person

C)in turn

D)in place

25.car was put into production in 2007, ________ helped to provide another 1400 jobs.A)that

B)when

C)what

D)which

Section B

Directions: There are also 10 incomplete statements here.You should fill in each blank with the proper form of the word given in brackets.Write the word or words in the corresponding space on the Answer Sheet.26.My impression is that the sales of this company have(great)________ increased this year.27.This picture(take)________ by a young reporter in Beijing last month.28.Tom has made the(decide)________ to apply for a job in the company.29.No reader is allowed(take)_________ any reference book out of the reading room.30.Although you may not(success)________ in the beginning, you should keep on trying.31.Because light travels(fast)________ than sound, lightning is seen before thunder(雷)is heard.32.The doctor recommended that Mary(start)________ the health program as soon as possible.33.It took me several weeks to get used to(drive)________ on the left side of the road in London.34.This medicine is highly(effect)_______ in treating skin cancer if it is applied early enough.35.Now who are working at home on the Internet(be)________ still very small.Part III Reading Comprehension

Directions: This part is to test your reading ability.There are 5 tasks for you to fulfill.You should read the reading materials carefully and do the tasks as you are instructed.Task 1

Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 to 40.For each question or statement there are 4 choices marked A), B), C)and D).You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the center.Falls are the number one cause of death to old people at home.Most old people can live safely at home if they make a few changes.Falls are common as people are getting older.Up to half of home accidents could be prevented simple changes.Here are a few suggestions:

Mark trouble spots with bright tapes.The first and last steps on stairs are usually high-risk accident areas.Applying bright tapes and using bright light in these areas would make these spots easier to see.Put grab bars(扶手)in the bathroom.A large number of falls occur in the bathroom.This is unfortunate(不幸的)because it’s easy to make the area safe from accidents.Putting grab bars in the bathroom gives people something to hang on to.Invest in a personal alarm.A personal alarm can be started if a person falls or otherwise gets in trouble.With the push of a button, the alarm automatically sends a signal, which gets someone to call and see if the person needs help.36.By making some very simple changes at home, old people ________.A)are free from home accidents

B)can improve their health

C)are likely to live longer

D)can live more safely

37.Last steps on stairs may become a high-risk accident area if they are ________.A)not painted in a different color

B)not marked with bright tapes

C)fixed with grab bars

D)very brightly lit

38.Falls in the bathroom are considered to be unfortunate because ________.A)they can easily be avoided

B)old people seldom fall in bathrooms

C)grab bars do not help to prevent falls

D)bathroom accidents are difficult to prevent

39.A personal alarm is designed for old people to ________.A)detect safety conditions at home

B)avoid falls in the bathroom

C)send out signals for help

D)make phone calls easily

40.The purpose of this passage is to tell people that ________.A)most old people die from accidents at home

B)up to half of home accidents could be prevented

C)falls at home can be avoided by taking some simple measures

D)protection be the first concern for the public

Task 2

Directions: This task is the same as Task 1.The 5 questions or unfinished statements are numbered 41 to 45.We have created a special rate that will let you travel actually thousands of miles on your vacation at no extra cost.In most of our US and Canadian offices, we’ll rent you cars of high quality for seven days for $99.You can drive as far as you like without paying us a penny over the $99 as long as you return the car to the city from which you rented it.Insurance(保险)is included, gas is not.If you rent the car in Florida or in California, the rate is the same, but you can return the car to any city in the state.If you’d like some suggestions on what to do with the car once you’ve got it, we have driving and touring guides for almost every part of the country.No matter which rate you choose, the company comes at no extra cost.You don’t just rent a car.You rent a company!

41.According to the advertisement, $99 is the rate offered for ________.A)traveling a limited distance

B)renting a car for seven days

C)hiring a driving guide

D)driving within a state

42.Which of the the car-renting rate?

A)Gas used.B)Car repairs.C)The hotel charge.D)Insurance fee.43.The car-renting rate remains $99 if you ________.A)return the car to where you rent it

B)drive within the same city

C)buy the insurance

D)pay for the gas

44.The last sentence of the passage ―You rent a company‖ means that ________.A)you have to be responsible for the company

B)you should obey the rules set by the company

C)you can enjoy all-round services of this company

D)you may choose the best car from the company

45.The purpose of the passage is to advertise ________.A)car-renting services in the US

B)a special rate of car-renting

C)the advantages of car-renting

D)a US car-renting company

Task 3

Directions: The following is a job application letter.After reading it, you should complete the information by filling in the blanks marked 46 through 50 in no more than 3 words in the table below.Dear Ms.Rennick:

Professor Saul Wilder, an adviser to your firm, has informed me that your company is looking for someone with excellent communication skills, organizational experience, and leadership background for a management position.I believe that my enclosed résumé will show that I have the qualifications(资历)and experience you seek.In addition, I’d like to mention how my work experience as a sales manager last summer makes me a particularly position.I would be grateful if you can offer me an opportunity for an interview with you.If you are interested, please contact me at(317)555-0118 any time before 11:00 a.m., or feel free to leave a message.I look forward to meeting with you to discuss the ways my skills may best serve your company.Sincerely yours，Richard Smith

An Application Letter

Applicant: Richard Smith

Position applied for: a-46-position

Qualifications required for the position:

1.excellent-47-

2.organizational experience

3.-48-background

Work experience(last summer): as-49-

Contact number:-50-

Enclosure: résumé

Task 4

Directions: The following is a list of terms used in the waybill(详情单)of the Express Mail Service.After reading it, you are required to find the items equivalent to(与…等同)those given in Chinese in the table below.Then you should put the corresponding letters in the brackets on the Answer Sheet, numbered 51 through 55.A —— original office

B —— accepted date

C —— posting stamp

D —— delivery stamp

E —— company name

F —— sender’s address

G —— customer code

H —— document I —— parcel

J —— name of contents K —— insurance amount L —— sender’s signature

M —— postal code BGZG – pa--8 N —— insurance fee O —— total charge

P —— receiver’s signature Q —— remark

Examples:(D)投递日戳(L)交寄人签名

51.()费用总计()收寄日期

52.()文件资料()邮嗦?br>53.()用户代码()收件人签名

54.()内件品名()发件人地址

55.()收寄日戳()单位名称

Task 5

Directions: The following is a set of instructions about how to use washing machines.After reading it, you are required to complete the statements that follow the questions(No.56 to No.60).You should write your answers in no more than 3 words on the corresponding Answer Sheet.To effectively , you must complete four steps carefully: loading(装载)the clothes, pouring in the detergent(洗涤剂), adjusting the water temperature, and putting in the coins.First, throw clothes of similar color into the machine;for example, whites, colored clothes, and towels should be washed separately.While completing this step, you must be careful not to overload the machine.Second, you should read the directions on your detergent box to find out the correct amount for your particular load.Next, select one of three possible water temperatures: hot, warm, or cold.Generally, hot temperature is used for white clothes, warm temperature for light colored clothes, and cold temperature for dark or brightly colored clothes.Finally, after closing the door of the washing machine, put in the proper amount of money.In summary, by following these simple directions, the washer will give you a clean load of wet clothes.56.Why should you follow the directions carefully when using the machine?

To use the washing machine ___________________________.57.What is the first step for using the machine to wash your clothes?

To throw the clothes of __________________ into the machine.58.Where amount of the detergent to be used?

On _______________________________________________.59.What temperature is recommended for washing light colored clothes?

__________________________________________________.60.When should you put in the money?

After ___________________________ of the washing machine.Part IV Translation--English into Chinese

Directions: This part, numbered 61 to 65, is to test your ability to translate English into Chinese.Each of the four sentences(N0.61 to No.64)is followed by four choices of suggested translation marked A), B), C)and D).Make the best choice and write the corresponding letter on the Answer Sheet.Write your translation of the paragraph(No.65)in the corresponding space on the Translation/Composition Sheet.61.Two assistants reporters’ names when they arrive at the press conference.A)两位助手要求记者在到达新闻发布会时通报他们的姓名。

B)两位助手到达新闻发布会时被记者要求通报他们的姓名。

C)有两位助手检查记者的姓名并通告他们新闻发布会的时间。

D)要有两位助手在记者到达新闻发布会时核对他们的姓名。

62.A guest paying full fare can invite another guest to join the tour at half price.A)支付全额费用的客人，参加旅游，按半价付费。

B)支付全额费用的客人，每位需要再邀请一位客人参加旅游，按半价收费。

C)每位按半价付费参加旅游的客人，必须再找到一位全额付费的客人参加。

D)支付全额费用的客人，如邀请另外一位客人参加旅游，可退还一半费用。

63.Congratulations on purchasing C800 Coffee Maker, which is suitable for home use.A)我公司隆重推出C800型家用咖啡壶，欢迎各界人士惠顾。

B)您从我公司购买了最新款的C800型家用咖啡壶，值得祝贺。

C)恭喜您购买本公司C800型咖啡壶，此款咖啡壶适合居家使用。

D)您购买的咖啡壶是我公司最新产品 — C800家用型，特此致谢。

64.Last month I booked a double room in the name of Mr.Brown for a week from the 14th, January.A)上个月一间双人房，为期一周，从1月14日起算。

B）上个月14日我为布朗先生预订了一间房间，到现在已有一周时间了。

C）上个月我为布朗先生预订了一个双人间，到1月14日止刚好为期一周。

D）上个月，布朗先生为我预订了两个房间，到1月14日为止，共一周时间。

65.Thank you for choosing our restaurant during your visit to London.Services to guests of the restaurant are a large part of our tasks, and we are grateful for the opportunity to serve you.We would like to invite your comments on our performance and to learn from your experiences.Please take a few moments to complete our customer we may serve you better in the future.Part V Writing

Directions: This part is to test your ability to do practical writing.You are required to write a note asking for sick leave based on the following information given in Chinese.Remember to do your writing on the Translation/ Composition Sheet.说明：假设你是公司职员刘斌，给经理Mr.Johnson写一张请假条。

时间：2008年6月19日，星期四

1.咳嗽特别厉害，想去医院看病；

2.因本周大部分工作已经完成，；

3.看完病后，会给经理打电话；

4.对由此造成的不便表示歉意；

5.希望能得到经理的批准。来

答案：16-20:DCBDA 21-25:ACBBD 26.greatly 27.was taken 28.decision 29.to take 30.succeed 31.faster 32.(should)start 33.driving 34.effective 35.is 36-40:DBACC 41-45:BDACB

46.management 47.communication skills 48.leadership 49.a sales manager 50.(317)555-0118

英语ab级试题及答案篇2

在对高职高专非英语专业学生的英语等级考试方面, 为体现“分类指导”的原则, 《要求》将英语应用能力考试分为A, B两级, 其中A级为国家标准, B级为适应当前现实状况的过渡要求, 经过若干年的努力, 最终全部达到A级标准。[1]所以, 自从1998年教育部开始实施高等学校英语应用能力考试以来, 越来越多的高职高专院校的学生认同并参加了这项考试。目前, 它已经成为教育部考核高职高专院校英语教学质量的重要标准。从教育部的规定可以看出, 高职高专英语应用能力考试即通常说的AB级考试, (为方便称呼, 以下都用AB级考试来代替英语应用能力考试) 对于高职高专院校具有其特殊的重要性, 他是衡量专科非英语专业学生英语应用能力的重要标准。AB级考试由于它本身测试对象的特殊性, 因此它无论在考试内容、还是在考试题型上, 与其他种类的英语考试都有很大的不同。它主要有以下五个部分构成:第一部分:听力理解 (15%) ;第二部分:词汇用法和语法结构 (A级只有语法结构) (15%) ;第三部分:阅读理解 (35%) ;第四部分:英译汉 (20%) ;第五部分:写作 (15%) 。[2]

文山学院由于升本时间还不长, 里面决大部分专业还是专科, 同一个专业有的虽然已经升为本科, 但是同时还保留了专科专业。从文山学院 (原文山师专) 2005年12月份学生参加共外AB级考试到2009年4月, 学生已经参加了7次了, 从教务处我们得到了6次的过级情况 (有1次由于电脑系统的缘故没有查到) , 在2005级至2007级的学生中, 三年中通过A级或者B级考试的通过率均低于31%, 具体的通过率如下:2005级学生A级通过率为7.8%, B级为22.6%;2006级学生A级通过率为20.9%, B级为30.8%;2007级学生A级通过率为30.2%, B级为9.3%。这样较低的AB级通过率显然是一个不好的现象, 它反映出我们学校的学生在公外AB级能力方面处于一个相对较低的能力水平。与云南省全省高职高专学校公外学生的AB级平均通过率对照来看, 从目前能够统计到的请况, 我校公外学生在AB级通过率方面也不容乐观, 尚且存在不小的差距, 在统计到的全省6次平均通过率中, 我校只有2008年6月的B级和2007年6月的B级通过率 (我校通过率分别是52.58和47.46, 全省为48.01和42.39) 略高于全省的B级考试平均通过率之外, 其他的4次考试均低于全省的平均通过率 (我校的通过率情况分别为:2008年6月A级为14.35, 2008年12月B级为46.32, 2007年6月A级为22.58, 2008年12月A级为56.70, 而分别对应的全省通过率分别为:24.36, 50.87, 33.78, 56.87) 。在从公外学生AB级过级率在学校各个系部的分布来看, 各个系部学生的通过率很不平衡, 有的系部较高, 有的系部较低, 即便是同一个系部也很不平衡, 有的班级通过率低, 有的班级通过率高, 还有就是每年的通过率都不大稳定。

针对对高职高专大学生AB级考试方面的研究, 目前有胡玥提出高职高专英语应用能力AB级考试技巧[3];戴术英对英语应用能力A、B级考试翻译题型进行了探索分析[4];刘艳林等提出改革高职英语教学提高学生英语应用能力[5];董广钧等分析AB级考试并提出了大学英语教学的启示[6]。但是以上广大英语教育工作者大多从考试技巧、题型分析、教学改革等方面进行了论述, 很少有人从学生这个角度去探讨造成学生在AB级能力低下的原因, 对西南边疆民族地区高校学生AB级能力低下的原因探究并提出建议方面的的论述就更少了。然而, 我们知道学生是AB级考试的主体, 对他们进行实际的调查和探究才能更好的提高其AB级考试的能力。因此, 本文试图从调查地处西南边疆民族地区的文山学院的学生出发, 来了解专科非英语专业大学生AB级能力低下的原因并提出建议, 以期望能给该学院的英语教师提供一个可以参照的视角, 从而能有针对性的改善该学院学生的AB级状况;同时也可以为其他地处西南边疆民族地区的专科院校的英语教师在提高学生英语AB级能力方面提供一定的借鉴。

1 文山学院专科非英语专业大学生英语AB级能力低下的原因调查

从2009年秋季开始, 课题组教师就着手对部分二年级 (08级) 的没有通过AB级考试学生进行半结构式的试访, 学生在回答“你认为自己没有通过AB级考试的原因有哪些?”这个问题的时候, 接受访谈的50名学生中:有30名说是学生自己英语基础比较差, 对英语不感兴趣、不喜欢学英语;有10名学生说大班上课 (60-80个学生一起上课) 听不清楚老师上课, 教学效率低下, 同时, 有教师上课管理也不严格, 缺课严重, 自己也有逃课的情况;有10名学生说教师平时上课所讲内容与AB级考试没有多少联系, 教学对于考试失去了针对性和指导作用。在09级新生军训结束之后, 课题组从09级中随机抽取4个班 (他们是09计算机教育、09计算机应用、09矿物加工、09食品检验) 进行了AB级考试的模拟测试, 并对他们的各题型的考试成绩进行了对比, 结果是:以上四个班的第一部分:听力理解15分所得平均分分别是5.1;5.7;4.9;5.4第二部分:词汇用法和语法结构15分所得平均分分别是8.2, 7.8, 8, 8.1;第三部分:阅读理解35分所得平均分分别是18.9;17.8;18.3;19.2第四部分:英译汉20分所得平均分分别是5.9;6.6;7;7.7第五部分:写作15分所得平均分分别是2;1.9;2.3;2.3。对以上学生的测试分析可以看出, 学生的英语基础整体上都很差, 总体上每一部分的平均分都没有达到及格分数线, 而在其中听力理解、翻译和写作这三个方面的得分又特别低, 说明他们在听力理解、翻译和写作方面的基础很差。同时, 对文山学院的情况了解得知, 由于文山学院地处西南边疆民族地区, 大山阻隔, 交通落后, 少数民族众多, 该地区在80年代初期还遭受中越战争的困扰, 所以经济、文化和教育都比较落很。处于这样地区的一所高校, 文山学院在师资和办学条件等方面也相对较弱, 在外语系拥有高职称和高学历的教师不多。以上这些都是导致学生AB级英语能力低下的客观因素。

2 提高学生AB级考试能力的建议

从以上采访的学生的回答和测试分析中得知, 学生的AB级能力低下主要是基础差、对英语没有兴趣、教师课堂管理松散、班级人数等方面的原因造成的, 同时没有相对较适合自己的英语学习和考试策略造成的。所以课题组提出如下建议:

1) 利用上课时间补充和强化一些语法和知识点以夯实学生的英语基础。教师在上英语课时可以逐步地给学生补充和强化常用一般现在时、现在进行时、一般将来时、过去时、过去进行时、过去将来时、现在完成时、过去完成时、现在完成进行时、将来完成时等时态, 同时给学生补充名词性从句、非谓语动词、虚拟语气、状语从句、宾语从句、主语从句语以及一些词块和搭配。在此之外, 教师还应该给学生补充表示并列、承接、因果、转折、对比、让步等关系的连词和副词的相关知识, 以期增强学生对句子和段落之间关系的理解进而增强他们对篇章关系的把握。

2) 知识讲解由易到难、教学方法灵活多样, 培养学生的英语学习兴趣。很多学生对英语学习不感兴趣的其中一个原因是教师的教学方法陈旧缺乏灵活多样, 同时讲解知识没有注意使用恰当的方法造成的。英语对于中国学生来说属于一门外语, 学习有一定的难度, 因此培养学生的兴趣很关键, 而培养学生兴趣的一个重要方面是教师上课给学生的感觉和印象, 一个教师上课幽默风趣, 方法灵活多样, 那么他的课堂会受到学生欢迎, 学生也会在上课的过程中逐步地培养他们对英语学习的兴趣。因此, 课题组建议对教师的课堂进行时而不时的听课和监督并提出一些建议以改进教学。提倡使用听说教学、交际教学、任务型教学、抛锚式教学、支架式教学等教学方法或者是这些方法的综合运用, 而不是一直使用传统的语法翻译教学。同时, 讲解知识点要由易到难, 举例时尽可能第使用相对简单的词汇以减轻学生理解上的困难。

3) 实行正常班级上课, 排除大班 (60-80人) 上课, 保证学生听到教师声音。由于学校从专科升为本科, 文山学院也响应云南教育发展的需要扩大了招生规模, 然而学校在师资引进方面却没有跟上学生扩招的步伐, 因此造成了英语教师紧张, 公共英语实行大班上课也是没有办法而为之的事情, 在九月份新生入学的这个学期, 有的公共英语上课时班级人数确实很多, 达到60-80人甚至更多。这样的一个大班上课, 教师的音量确实很有限, 教学管理也很难。要解决以上问题, 建议学院适当增大引进英语师资的力度, 以保证公共英语教学以正常班级上课, 让学生能听到教师讲课的声音。

4) 加强教学管理, 严格考情和作业的上交。从学生的访谈之中了解到, 有的教师在上公共英语课的时候教学管理不够严格, 学生缺课问题没有得到有效的解决, 因此加强教学管理, 严格考勤以及检查作业的上交等方面必须落到实处。因为现在的大学生与以前的大学生相比较却实有些不一样, 以前的高等教育是精英教育, 考上大学不容易, 而现在的大学教育已经不是精英教育, 它已经逐步地进入大众化教育, 考大学尤其是一般的大学比起过去来说相对容易得多, 因此现在的大学生的整体素质相对以前的学生来说素质有所下降, 他们在自律方面比以前的学生要差很多, 这已经是一个不容置疑的事实。遇到这样的情况, 教师可以从加强教学管理, 严格考情和作业的上交等方面入手来使学生提高出勤率和作业的上交从而保证教有所学, 端正学生的学习态度。

5) 研究考题, 使教学讲解与考试密切联系。高职高专实用英语等级考试 (通常说的AB级考试) 是衡量高职高专学生英语水平的一个重要标准。所以很多学校都很看重它, 专科学生持有AB级考试过级证书对他们今后求职也会有一定的帮助。基于此, 教师应该利用课余的时间研究AB级过级考试的考题, 分析考试的题型、常考的知识点、语法点、常用到的做题技巧等。在上课的时候, 根据所遇到的知识点、语法点进行适当的拓宽和引申以适合AB级考试的难度, 同时可以直接告诉学生这样的知识点和语法在AB级考试中一般是怎样出现, 他们还有可能会出现哪些变体, 应该注意该知识点的哪些方面, 同时进行相关学习策略和做题技巧的传授和辅导。这样, 考试就与平时的教学紧密地结合起来, 平时的教学对AB级考试就有很强的针对性和指导性。这样做还有另外的一个作用, 这就是它能在一定程度上激励哪些想得到AB级证书的学生的学习积极性, 促使他们提高出勤率和上课认真听讲。当学生通过考试之后, 成功的喜悦也能够促进他们进一步对英语的学习。

3 结束语

文山学院专科非英语专业大学生的AB级考试能力低下有其学生自身的原因, 也有教师教学管理、教学方法、师资不足等方面的原因。课题组提出了补充和强化一些语法和知识点、改进教学方法、实行正常班级上课、加强教学管理、教学讲解与考试密切联系等建议以及加强对考试的研究。如果按照这些建议去做同时在教学的过程中不断根据学生的情况和要求不断加以改进, 那么文山学院学生AB级考试的可以有望得到提高。

摘要：对文山学院里的专科学生英语AB级能力低下的原因进行了调查, 发现有学生基础差、缺乏英语学习兴趣、教学管理松散、班级人数过大等方面的原因, 提出了加强学风建设、教风建设、革新教学方法、正常班级上课以及研究考题等建议。

关键词：专科非英语专业大学生,文山学院,英语AB级能力,建议

参考文献

[1]教育部高等教育司.高职高专教育英语课程教学基本要求 (试行) [M].北京:高等教育出版社, 2000.

[2]牛慧霞.高等学校英语应用能力考试B级辅导大全[M].北京:北京外文出版社, 2006:1.

[3]胡玥.高职高专英语应用能力AB级考试技巧[J].职业教育研究, 2008 (11) :163-164.

[4]戴术英.英语应用能力A、B级考试翻译题型探析[J].中国校外教育, 2009 (2) :621-622.

[5]刘艳林, 张建英, 杨晓.改革高职英语教学提高学生英语应用能力[J].石家庄职业技术学院学报, 2010 (3) :68-70.

英语ab级试题及答案篇3

下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提供的是正确信息，请选择A;如果该句提供的是错误信息，请选择B;如果该句的信息文中没有提及，请选择C。

Black Holes

Most scientists agree that black holes exist but are nearly impossible to locate.A black hole in the universe is not a solid object,like a planet,but it is shaped like a sphere (球体).Astronomers(天文学家)think that at the center of a black hole there is a single point in space with infinite(无限的)density(稠密).This single point is called a singularity (奇点).If the singularity theory is correct,it means that when a massive star collapses,all the material in it disappears into the singularity.The center of a black hole would not really be a hole at all,but an infinitely dense point.Anything that crosses the black hole is pulled in by its great gravity.

Although black holes do exist,they are difficult to observe.These are the reasons.

● No light or anything else comes out of black holes.As a result,they are invisible to a telescope.

● In astronomical terms,black holes are truly.For example,a black hole formed by the collapse of a giant star would have an event horizon(视界)only 18 miles across.

● The nearest black holes would be dozens of light years away from Earth.One light year is about 6 trillion(万亿)miles.Even the most powerful telescopes could not pick out an object so small at such a great distance.

In 1994 the Hubble Space Telescope provided evidence that black holes exist.There are still answers to be found,however,so black holes remain one of the mysteries of the universe.

16.Black holes are part of space.