2017.中考模拟训练2
2017年英语中考模拟试题(含答案)

2017年英语中考模拟试题满分:120分时间:100分钟第Ⅰ卷(选择题,共60分)一、单项选择(共15小题,每小题1分,满分15分)从每题所给的A、B、C、D四个选项中选出最佳选项。
1. Jack, American teacher, is arriving at our school by car.A. a; theB. an;不填C. an; theD. a;不填2. Chin a‘s soccer team will continue their dreams of 2018 World Cup after a 2-0 comfortable win over Qatar ______ March 29, 2016.A. inB. onC. withD. at3. According to the rule, children should ______ a nearby school to receive education in Lianyungang.A. enterB. treatC. supportD. present4. The young man couldn‘t afford a new flat. ______, he bought a second-hand one.A. StillB. InsteadC. OtherwiseD. Moreover5. To our surprise, our monitor picked the ______ apples of the four this morning.A. fewerB. lessC. fewestD. least6. —Our government has decided to ______ more hospitals and schools in Jiangbei New Districtof Lianyungang.—I‘m very glad to hear that.A. look upB. set upC. give upD. take up7. —You should do some housework ______ you have grown up.—OK, dad, I will.A. unlessB. untilC. sinceD. although8. —Was Doctor Ma‘s speech a success?—Yes. He caught all the listeners‘ ______ with it.A. productionB. organizationC. instructionD. attention9. —Why is it so noisy on the fourth floor?—Oh, I forgot to tell you. Many children _______ Ann‘s birthday there.A. celebratedB. are celebratingC. were celebratingD. have celebrated10. ______ viruses from spreading, we should wash our hands more often.A. StopB. StoppedC. StoppingD. To stop11. —You have to believe in yourself. No one will, if you don‘t.—______. Confidence is really important.A. I agreeB. I don‘t think soC. You‘re jokingD. I‘m afraid not12. —It‘s hard for me to fall asleep at night. Could you offer me some advice?—______. Tell me all about it and I‘ll do what I can.A. Never mindB. No wayC. No problemD. Forget it13. The 2022 Winter Olympics will in Beijing, setting up the Chinese capital to become the first city to host both Summer and Winter Olympic Games.A. take inB. take offC. take placeD. take away14. So far, the AIIB (亚投行) 57 countries to be the founding members.A. attractedB. has attractedC. will attractD. have attracted15. —Would you mind not throwing waste here and there?—_ .A. Sorry, I won‘t do it againB. Sure, I‘d love toC. Yes, of courseD. No, thanks二、完形填空(共15小题;每小题1分,满分15分)阅读下面短文,掌握其大意,从每题所给的A、B、C、D四个选项中选出最佳选项。
2017年上海市普陀区中考二模试卷(含听力文本和答案)

2016学年第二学期普陀区初三模拟考英语试卷2017.4Part 1 Listening (第一部分听力)I. Listening comprehension (听力理解)(共30 分)A. Listen and choose the right picture (根据你听到的内容,选出相应的图片)(6分)B. Listen to the dialogue and choose the best answer to the question you hear (根据你听到的对话和问题,选出最恰当的答案)(8分)7. A. Sunny.B. Cloudy. C. Snowy. D. Rainy.8. A. By car. B. By underground. C. By taxi. D. By bus.9. A. Yesterday. B. Today. C. Tomorrow. D. Next week.10. A. Watching a basketball game. B. Going to work.C. Shopping in the new mallD. H aving Italian food.11. A. Because she dislikes watching plays.B. Because she needs to see the doctor.C. Because she has watched the playD. Because she'll visit her sick cousin.12. A. A library. B. A kindergarten.C. A shopping centre.D. A restaurant.13. A. Wait for the man B.Drive to the party.C. Call her boss.D. Cancel their dinner.14. A. Discussing an interesting film. B. Complaining about a cinema.C. Sharing their favourite music.D. Talking about their troubles.C. Listen to the passage and tell whether the following statements are true or false (判断下列句子是否符合你听到的内容,符合的用“T”表示,不符合的用“F”表示)(6分)15. By the age of 16, Tony had lived in many countries with his parents.16. Tony and Maureen found a job as tourist guides after they got married.17. It took the couple half a year to travel from London to Australia.18. Tony’s first guidebook was about their trip through some Asian countries.19. The couple stopped travelling after they started a company called Lonely Planet.20. Today Lonely Planet is a big company with 400 members and over 650 guidebooks.D. Listen to the passage and complete the following sentences (听短文,完成下列句子。
2017中考二模各科目提分攻略

中考二模各科目提分攻略2017 语文:答非连续性文本阅读先抓住关键词提分攻略:临近中考,时间短,内容多,短时高效是复习的基本原则。
整体复习讲速度,要全面,掌握错题是关键。
这部分可采取诵读诗文默写的积累。
常识与名著阅读的积累、积累部分包括字词积累、标记出有问题的地方,即用眼、用口、用耳、用脑。
,“四用”做到法复习,定期反复记忆。
古诗赏析以明角度,重理解,抓重点,多梳理,列表格的方法,让学生扎实而灵活地掌握,争取做到此分必得。
要特别重今年在扎实掌握词语解释的基础上,个个过关的方法。
文言文采取逐篇突破,视句子翻译的练习。
具体做法:对照原文直接口答译文,整理错句进行自测。
准指的是找准地方。
快指的是速度快,。
“准”和“快”答好非连续性文本阅读的关键是然后带着关键词在材料中快速搜索,并概括提炼内容要答题方法是:先看题,抓住关键词,点答题。
不要空泛地特别要注意结合选文具体内容答题,现代文阅读要注意根据文体特点答题。
答套话。
语言要形象,卷面要整洁。
提升语言和工整书写的作文要注意点题要勤,结构要清楚,训练可在最后阶段有效地提分。
数学:别追难题偏题夯实基础最关键提分攻略:但基础题部分会更注重基础知识点难题部分不会下降,中考数学在新课标要求范围内,的考察,学生更易得分。
一、以新课标中的“内容标准”为依据,全面复习基础知识,不重不漏地再看一遍。
对中考试卷保证基础知识点的熟练掌握和运用。
个别掌握不准确的基础知识点可做适度练习,对大部分的学生来说没有太大难度,所涉及的知识点较为简单,的题目均为基础题,70%中有是必须拿分的,不能因忘了而丢分。
做题是对理论知识的进一步巩固与检验,要在理解的基础上及时归纳。
二、坚持练习,加强练习,因此但不能一味追求难题偏题。
中档题能拿分但也易失分,以达到巩固的目的,要特别注意。
书写格式,例如:勾股定理,切线的性质和判定,三角形的全等和相似;答题“结论是否正解题过程,)组(步骤语言论述,例如:解分式方程及应用题的步骤,求不等式,求直线和抛物线的解析式,概率题的语言表述,常规几“直接写出答案”,确,说明理由” 何解题方法的灵活使用。
2017年中考历史模拟试题(二)

2017年中考模拟试题(二)历史第Ⅰ卷(选择题共30分)一、单项选择题(每题2分,共30分)1、国家发改委、外交部、商务部于2015年3月28日联合发布《推动共建丝绸之路经济带和21世纪海上丝绸之路的愿景与行动》,要求新疆地区发挥独特的区位优势,打造丝绸之路经济带核心区。
该地区隶属于中央政府的管辖开始于()A.西汉时期B.东汉时期C.三国时期D.唐朝时期2、秦始皇像是我国历史上一位重要的历史人物李白称赞他说:“秦王扫六合,虎视何雄哉!”李白称赞他的功绩是()A.结束了春秋战国以来的分裂割据局面,完成统一B.创立了一套封建专制主义的中央集权制度C.推行郡县制,在我国历史上影响深远D.统一了货币、度量衡和文字3、贞观十五年,吐蕃的一位赞普说:“我父祖未有通婚上国者,今我得尚大唐公主,为幸实多。
”题中的“赞普”和“公主”指的是()A.尺带珠丹和文成公主 B.松赞干布和文成公主C.尺带珠丹和金城公主 D.松赞干布和金城公主4、隋朝如同一颗流星划过中国历史的天空,短暂而耀眼。
下列属于隋朝时期创立的制度或修建的工程建筑有()①科举制②大运河③赵州桥④都江堰.A.①②④B.②③④C.①②③D.①③④5、文学创作来源于社会生活。
唐诗作为一个时代的主要文学表达形式,能从不同侧面反映出唐朝的社会风尚。
下列诗句中反映唐朝盛世经济繁荣的是A.稻米流脂粟米白,公私仓廪俱丰实。
(杜甫)B.春风得意马蹄疾,一日看尽长安花。
(孟郊)C.小头鞋履窄衣裳,青黛点眉眉细长。
(白居易)D.历览前贤国与家,成由勤俭败由奢。
(李商隐)6、下列史实能够反映唐朝中外文化双向交流的是()①鉴真东渡②唐太宗被尊称为“天可汗”③玄奘西行④遣唐使来华⑤陕西西安出土的唐代大食旅行者陶俑A.①②③④ B.①②④⑤C.①③④⑤ D.①②③⑤7、我国将12月13日定为国家公祭日,纪念30多万死难同胞,与该公祭日直接相关的历史事件是()A.日军屠杀旅顺居民B.八国联军在北京烧杀抢掠C.南京大屠杀D.柳条湖事件8、十七大报告指出:“中国仍处于并将长期处于社会主义初级阶段的基本国情没有变……。
2017年中考模拟试题语文卷(二)

2017年中考模拟试题语文卷(二)考试时间:120分钟卷面分值:120分一、古诗文名句填写(8分,每小题1分)1.潮平两岸阔,。
(王湾《次北固山下》)2.,铁马冰河入梦来。
(陆游《十一月四日风雨大作》)3在《红楼梦》第四十八回,曹雪芹借香菱之口评述王维《使至塞上》中“,”两句,指出其描绘大漠壮观景象,似不合事理而实妙、似俗而实巧,可谓一语中的。
4.“轻轻地我走了,正如我轻轻地来。
”三年的时光已悄然流逝,初识犹在昨天,分别即在眼前。
回首往昔,校园处处留下欢歌笑语,而今不免涌起缕缕怅惘。
此时此刻,我们吟诵李白《送友人》中“,”的诗句,感受到一种依依惜别的深情。
5.人生的道路总是充满各种艰难险阻,就像李白在《行路难》中慨叹的那样:“,。
”但是,只要我们乐观自信,坚持不懈,就一定能够战胜这些艰难险阻。
6.晏殊在《浣溪沙》一词中发出“夕阳西下几时回”的疑问,表达对时光流逝的怅惘。
汉乐府《长歌行》中也发出了相似的疑问:,?7.老子有句名言:“合抱之木,生于毫末;九层之台,起于累土;,。
”它启示我们:实现理想要从眼前的小事做起,坚持不懈,持之以恒,否则理想就只是空谈。
8.范仲淹在《岳阳楼记》一文中提出“先天下之忧而忧,后天下之乐而乐”,继承了孟子的“乐民之乐者,民亦乐其乐;忧民之忧者,民亦忧其忧。
,”(《孟子▪梁惠王下》)的思想,体现了中华民族的优秀传统文化和民族精神。
二、语文基础和语文实践活动(共16分)9.下列加点字注音全部正确的一项是()(2分)A.祈.祷(qí) 骨髓.(suí) 玄.虚(xuán) 束.手无策(shù)B.阻塞.(sè) 滂.沱(páng) 静谧.(mì) 不屑.置辩(xiè)C.倒坍.(tān) 隐匿.(nì) 归省.(xǐng) 锲.而不舍(qiè)D.禁.锢(jìn) 长髯.(rán) 解剖.(pāo) 玲珑剔.透(tī)10.下面各句中,标点符号使用合乎规范的一项是()(2分)A.十三、四岁的胡适沿着崎岖艰险的小路走进上海,飘到美国,回到北京,他博览群书,学贯中西,成为国人敬仰的国学大师。
2017年上海市长宁区中考二模试卷(含听力文本和答案)

2016学年第二学期长宁等区初三模拟考英语试卷2017。
4(满分:150分考试时间:100分钟)Part 1 Listening (第一部分听力)I。
Listening Comprehension (听力理解)(共30 分)A. Listen and choose the right picture (根据你听到的内容,选出相应的图片)(6分)1。
_________2。
_________3. _________4。
_________5。
_________6. _________B. Listen to the dialogue and choose the best answer to the question you hear (根据你听到的对话和问题,选出最恰当的答案):(8分)7。
A。
Spring B. Summer C。
Autumn. D。
Winter。
8。
A. In New York。
B. In Boston C。
In Washington. D. In London.9. A. $7。
B. $9. C。
$5. D. $210. A. A waitress. B。
A librarian. C。
A shop assistant。
D。
A clerk111. A。
At a school library。
B. At a restaurantC。
At a police station。
D. At a supermarket。
12。
A。
Helen. B。
Frank C. Eddie。
D. Lily13。
A. The man spends a lot of money on gas。
B. The man is saving money for a new car。
C. The man is repairing his parents’ carD. The man is making money for the new car.14. A. She will cancel her train。
2017年南京市英语中考模拟试卷

2017年南京市英语中考模拟试卷初三的学生备考的时候就要多做英语中考模拟试题,并加以复习,这样能更快提升自己的成绩,以下是小编精心整理的2017年南京市英语中考模拟试题,希望能帮到大家!2017年南京市英语中考模拟试题一、单项填空 (本题有10小题,每小题1分,共10分)请从A、B、C、D四个选项中选出可以填入空白处的最佳选项。
1. — Excuse me, in which class is ______ boy in blue?—I’m not sure, he may be in Class Six.A. aB. anC. theD./2. I think _________ can make Andy change his mind. He is such a person who never gives up easily.A. somethingB. nothingC. anythingD. everything3. — Sleeping early is really a good _______.— So it is. It keeps us healthy.A. jobB. hobbyC. ruleD. habit4. — Do you consider that money is the most important in your life?— __________ not. Money is important, but it is not everything.A. ProbablyB. UsuallyC. CertainlyD. Sometimes5. — What is Antonio like?— Well, he is pretty ________. He often gets nervous when he has to meet new people.A. carefulB. shyC. outgoingD. energetic6. — was your day off, Eric?—You mean yesterday? Oh, really great. I went to Wanda Square.A. WhenB. WhereC. WhatD. How7. — Will Mary go to the movie with me?—No, I don’t think so. She ___________ to go shopping with her friends.A. decidesB. has decidedC. will decideD. decided8. —Darling, how many flights are leaving for Beijing on Sunday morning?— Wait a minute. Let me __________ in the schedule(时刻表).A. look it upB. look for itC. look it downD. look at it9. — Do you know ______?— To meet her friends from America.A. where Anna is goingB. who is Anna’s b est frien dC. how Anna goes to the airportD. why Anna is going to the airport[10. — If you have any trouble, be sure to call me.— _______.A. I am sorry to hear thatB. I will think it overC. I have no troubleD. I will. Thank you very much二、完形填空 (本题有15小题,每小题1分,共15分)阅读下面短文,掌握大意,然后从每题所给的A、B、C、D四个选项中选出最佳选项。
2017英语中考自拟模拟题2(带答案)

1最后冲刺(二)一、选词填空(1)(2)“I like football, doctor.” he said, “please help me. My life has 2. ________ been a good one since I became 3. ________ in football and it is getting worse and worse. I can’t even 4.________ from it in my sleep. When I close my 5.________, I’m out there in the football field and 6. ________ after a flying ball . When i wake up, I’m more 7. ________than I was before I went to bed. What am i going to do? ”The doctor sat back and said, “ First of all, you 8. ________ to do your best not to dream(做梦) about football. Before you fall asleep, try to 9. ________about something else. try to think that you are at a party and someone is going to give you several million dollars.”“ Are you crazy (疯了) ?” the man shouted, “ I’ll 10. ________ the ball !” 二、语法填空(1)Anne is a newspaper reporter. She chose this job so she could travel around world. The work has taught her many unforgettable lessons. She has seen wars, earthquakes and death. 1 she has also seen courage, hope and 2 (happy).Last year, she won an award for her reporting in Africa. She was very proud it. At first, she thought she got the award because of her good work. But then she realized that she should thank many other people for 3 (they) help.Anne was born in Jamaica. Her family was not poor, but it was not rich, 4 .Her parents had to work hard so that she could go to school. At school, Anne was not a good student, but she enjoyed 5 (write) because her English teacher said, “Anne, you are a wonderful 6 (write).” The teacher encouraged her all the time.Later, Anne went to university in Canada and then looked 7 a job. It was very difficult. Then, one day, she went to see the editor of a newspaper in Ottawa. Theeditor gave her a job. “Everyone 8 (need) a chance at first.” He said.(2)In the USA, there are many 1 (type) of restaurants. Fast food restaurants are very famous. You can find McDonald’s and Kentucky Fried Chicken 2 many countries around the world. You look at a menu above the counter, and say 3 you’d like to eat. You pay the person 4 serves you. You take your food and sit down 5 take it away. There’s no need 6 (leave) a tip.In a coffee shop you sit at the counter or at a table. You don’t wait 7 the waitress to show you where 8 (sit). She usually brings you coffee when you sit down. You tell 9 (she) what you’d like to eat and she brings it 10 you. You pay the cashier as you leave. A diner is like a coffee shop but usually looks like a railway carriage.(3)One evening two young men were walking in the street together. They tried (1) __________ (find) a chance to steal something. The clock struck twelve.(2)__________(many) of the people went to bed. (3)_________(quick) they came to a house and it (4)___________(seem) that everyone in the house (5)__________(fall) (6) __________(sleep). Standing at the front gate, one said (7) ________ English to (8) __________other in a low voice,“You wait here, Till go around to the back door and then get into the house. Suddenly out of the house ran a dog, barking at them. The two young men were very (9)_________ (frighten) and ran away (10) _______fast as they could. Finally, they stopped at a lonely place. The man said breathlessly, “It’s too bad. I hadn’t expected that the dog understood English.”三、完成句子(1)1. 我已下决心要当一名演员。
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第I 卷(选择题共30分)
一、选择题(共10小题,每小题3分,计30分.每小题只有一个选项正确)
1.计算(+5)+(﹣2)的结果是( )
A .7
B .﹣7
C .3
D .﹣3
2.如图,是由两个相同的小正方体和一个圆锥体组成的立体图形,其俯视图是( )
A .
B .
C .
D .
3.下列计算正确的是( ) A .x 2+x 2=x 4
B .2x 3﹣x 3=x 3
C .x 2•x 3=x 6
D .(x 2)3=x 5
4.如图,在△ABC 中,∠ACB=90°,CD ∥AB ,∠ACD=40°,则∠B 的度数为( ) A .40° B .50° C .60°
D .70°
5.不等式组20
260x x +⎧⎨-≤⎩
> 的解集在数轴上表示正确的是( )
6如图,电灯P 在横杆AB 的正上方,AB 在灯光下的影子为CD ,AB ∥CD ,AB =2m ,CD =5m ,
点P 到CD 的距离是3m,则点P 到AB 的距离是( )m.
A. 65
B.76
C. 56
D.3
10
7.如图,一直线与两坐标轴的正半轴分别交于A,B两点,P是线段AB上任意一点(不包括端点),过P分别作两坐标轴的垂线与两坐标轴围成的矩形的周长为10,则该直线的函数表达式是()
A.y=x+5 B.y=x+10 C.y=﹣x+5 D.y=﹣x+10
8.如图,对折矩形纸片ABCD,使AB与DC重合得到折痕EF,将纸片展平;再一次折叠,使点D落到EF上点G处,并使折痕经过点A,展平纸片后∠DAG的大小为()
A.30°B.45°C.60°D.75°
9.如图,点D(0,3),O(0,0),C(4,0)在⊙A上,BD是⊙A的一条弦,则sin∠OBD=()
A.B.C.D.
10.抛物线y=x2+bx+c(其中b,c是常数)过点A(2,6),且抛物线的对称轴与线段y=0(1≤x≤3)有交点,则c的值不可能是()
A.4 B.6 C.8 D.10
第II卷(非选择题共90分)
二、填空题(共4小题,每小题3分,计12分. 每小题只有一个选项是符合题意的)
11.分解因式:ab4﹣4ab3+4ab2=.
12.A.如图,AC是正五边形ABCDE的一条对角线,则∠ACB=.
B如图,在一次数学课外实践活动中,小聪在距离旗杆10m的A处测得旗杆顶端B的仰
角为60°,测角仪高AD为1m,则旗杆高BC为m(结果保留根号).
A图B图
13.如图,反比例函数y=(k≠0)的图象经过A,B两点,过点A作AC⊥x轴,垂足为C,过点B作BD⊥x轴,垂足为D,连接AO,连接BO交AC于点E,若OC=CD,四边形BDCE 的面积为2,则k的值为.
14.如图,菱形ABCD中,AB=4,∠B=60°,E,F分别是BC,DC上的点,∠EAF=60°,连接EF,则△AEF的面积最小值是.
三、解答题(共11小题,满分78分)
15.计算:(本小题满分5分)
()﹣2+|﹣2|﹣2cos30+.
16.解分式方程:(本小题满分5分)
+
=4.
17.(本题满分5分)某市计划在新竣工的矩形广场的内部修建一个音乐喷泉,要求音乐喷泉M 到广场的两个入口A ,B 的距离相等,且到广场管理处C 的距离等于A 和B 之间距离的一半,A ,B ,C 的位置如图所示,请在原图上利用尺规作图作出音乐喷泉M 的位置.(要求:不写已知、求作和作法,保留作图痕迹,必须用铅笔作图)
18.(本小题满分5分)
在读书月活动中,某校号召全体师生积极捐书,为了解所捐书籍的种类,图书管理员对部分书籍进行了抽样调查,根据调查数据绘制了如下不完整的统计图表.请你根据统计图表所提供的信息回答下面问题:
(
1)统计表中的m = ,n = ; (2)补全条形统计图;
(3)本次活动师生共捐书2000本,请估计有多少本科普类图书?
某校师生捐书种类情况统计表
如图10,在□ABCD中,E是BC的中点,连接AE并延长交DC的延长线于点F.连接=。
DE,若AB
AD2
DE⊥.
求证:AF
20.(本小题满分7分)
如图,大楼AB右侧有一障碍物,在障碍物的旁边有一幢小楼DE,在小楼的顶端D处测得障碍物边缘点C的俯角为30°,测得大楼顶端A的仰角为45°(点B,C,E在同一水平直线上),已知AB=80m,DE=10m,求障碍物B,C两点间的距离(结果精确到0.1m)(参考数
据:≈1.414,≈1.732)
21.(本小题满分7分)
公司有330台机器需要一次性运送到某地,计划租用甲、乙两种货车共8辆.已知每辆甲种货车一次最多运送机器45台、租车费用为400元,每辆乙种货车一次最多运送机器30台、租车费用为280元.
(Ⅰ)设租用甲种货车x辆(x为非负整数),试填写下表.
一:
租用甲种货车的数量/ 辆
(Ⅱ)给出能完成此项运送任务的最节省费用的租车方案,并说明理由.
在校园文化艺术节中,九年级一班有1名男生和2名女生获得美术奖,另有2名男生和2名女生获得音乐奖.
(1)从获得美术奖和音乐奖的7名学生中选取1名参加颁奖大会,求刚好是男生的概率;(2)分别从获得美术奖、音乐奖的学生中各选取1名参加颁奖大会,用列表或树状图求刚好是一男生一女生的概率.
23.(本小题满分8分)
如图,AB为⊙O的直径,弦CD⊥AB,垂足为点P,直线BF与AD的延长线交于点F,且∠AFB=∠ABC.
(1)求证:直线BF是⊙O的切线.
(2)若CD=2,OP=1,求线段BF的长.
如图,抛物线y=ax2+bx-1(a≠0)经过A(-1,0),B(2,0)两点,与y轴交于点C。
(1)求抛物线的解析式及顶点D的坐标;
(2)点P在抛物线的对称轴上,当△ACP的周长最小时,求出点P的坐标;
(3) 点N在抛物线上,点M在抛物线的对称轴上,是否存在以点N为直角顶点的Rt△DNM
与Rt△BOC相似,若存在,请求出所有符合条件的点N的坐标;若不存在,请说明理由。
第24题图
25.(本小题满分12分)
在矩形ABCD 中,),(,a b b AB a AD >==P 为AB 边上一点,且),(a m m PB <=在CD 边上有两点M 、N .
(1)如图(1),求证:MPB ∆的面积与NPB ∆的面积相等;
(2)如图(2),延长AB 到点S ,使得BS =m ,以BS 为边在直线AB 上方作正方形BSRQ ,连
接AR 、AQ 、AC 、CR ,若ACR ∆的面积等于矩形ABCD 面积的
4
1
,试确定a 、b 的关系; (3)如图(3),有一片矩形绿地ABCD ,已知,,b AB a AD ==现要修建一条高速公路,
该公路要占用绿地,ABE ∆按照施工要求,高速公路的边缘AE 不能超过BC 的中点,为补偿占用的绿地,试在AE 的延长线上找出一点F ,使四边形 ADCF 的面积与原矩形ABCD 的面积相等.设BE =n ,试利用图(3)画出图形并说明理由.
图(1)
图(2)。