日日人人_亚洲美女在线视频_av手机在线播放_国产大片aaa_欧美中文日韩_午夜理伦三级

精英家教網 > 高中英語 > 題目詳情
5.Knots are the kind of stuff that even myths are made of.
In the Greek legend of the Gordian knot,for example,Alexander the Great used his sword to slice through a knot that had failed all previous attempts to unite it.Knots,enjoy a long history of tales and fanciful names such as"Englishman's tie,""and"cat's paw."Knots became the subject of serious scientific investigation when in the 1860s the English physicist William Thomson (known today as Lord Kelvin) proposed that atoms were in fact knotted tubes of ether(醚).In order to be able to develop the equivalent of a periodic table of the elements,Thomson had to be able to classify knots-find out which different knots were possible.This sparked a great interest in the mathematical theory of knots.
A mathematical knot looks very much like a familiar knot in a string,only with the string's ends joined.In Thomson's theory,knots could,in principle at least,model atoms of increasing complexity,such as the hydrogen,carbon,and oxygen atoms,respectively.For knots to be truly useful in a mathematical theory,however,mathematicians searched for some precise way of proving that what appeared to be different knots were really different-the couldn't be transformed one into the other by some simple manipulation(操作).Towards the end of the nineteenth century,the Scottish mathematician Peter Guthrie Tait and the University of Nebraska professor Charles Newton Little published complete tables of knots with up to ten crossings.Unfortunately,by the time that this heroic effort was completed,Kelvin's theory had already been totally discarded as a model for atomic structure.Nevertheless,even without any other application in sight,the mathematical interest in knot theory continued at that point for its own sake.In fact,mathematical became even more fascinated by knots.The only difference was that,as the British mathematician Sir Michael Atiyah has put it,"the study of knots became a special branch of pure mathematics."
Two major breakthroughs in knot theory occurred in 1928 and in 1984.In 1928,the American mathematician James Waddell Alexander discovered an algebraic expression that uses the arrangement of crossings to label the knot.For example,t2-t+1or t2-3t+1,or else.Decades of work in the theory of knots finally produced the second breakthrough in 1984.The New Zealander-American mathematician Vaughan Jones noticed an unexpected relation between knots and another abstract branch of mathematics,which led to the discovery of a more sensitive invariant known as the Jones polynomial.

63.What is surprising about knots?B
A.They originated from ancient Greek legend.
B.The study of knots is a branch of mathematics.
C.Knots led to the discovery of atom structure.
D.Alexander the Great made knots well known.
64.What does the underlined word"that"in Paragraph 3refer to?A
A.No other application found except tables of knots.
B.The study of knots meeting a seemingly dead end.
C.Few scientist showing interest in knots.
D.The publication of complete tables of knots.
65.According to the passage,D shows the most updated study about knots.
A.t2-t+1
B.t2-3t+1
C.Alexander polynomial
D.Jones polynomial
66.Which one would be the best title for this passage?B
A.Mathematicians VS Physicians
B.To be or Knot to be
C.Knot or Atom
D.Knot VS Mathematics.

分析 本文屬于說明文閱讀,作者通過這篇文章主要向我們介紹了有關數學中的分支的討論,首先向我們介紹了神話中的"結",從而過渡到數學中的"結",數學家用一些精確的方法證明了結成為數學中一個特殊的分支,并就此展開了討論.

解答 63.B  細節理解題,根據第三段The only difference was that,as the British mathematician Sir Michael Atiyah has put it,"the study of knots became a special branch of pure mathematics."可知"knots"即為結,已經變成數學的一個分支了,故選B.
64.A  詞義猜測題,根據第三段Nevertheless,even without any other application in sight,the mathematical interest in knot theory continued at that point for its own sake.In fact,mathematical became even more fascinated by knots.The only difference was that,as the British mathematician Sir Michael Atiyah has put it可知除了knots,沒有任何其他應用程序能有研究數學的興趣,因此"that"指的是"No other application found except tables of knots",故選A.
65.D  細節理解題,根據最后一段The New Zealander-American mathematician Vaughan Jones noticed an unexpected relation between knots and another abstract branch of mathematics,which led to the discovery of a more sensitive invariant known as the Jones polynomial.可知瓊斯多項式的發現顯示了最新的關于結的研究,故選D.
66.B  主旨大意題,通讀全文可知本文主要告訴我們knot變成數學分支的歷史,并就其進行討論,故選B.

點評 考查學生的細節理解和推理判斷能力.做細節理解題時一定要找到文章中的原句,和題干進行比較,再做出正確選擇.在做推理判斷題時不要以個人的主觀想象代替文章的事實,要根據文章事實進行合乎邏輯的推理判斷.

練習冊系列答案
相關習題

科目:高中英語 來源: 題型:選擇題

8.-Why is the librarian looking so hard at me?
-You ______ to read aloud in the reading room.(  )
A.don't supposeB.haven't supposed
C.are not supposedD.are not supposing

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

9.CCBN2011
The 19th China Content Broadcasting Network Exhibition-CCBN2011will take place from April 23-25,2011in China International Exhibition Center (CIEC) in Beijing.CCBN has 69,000square meters of exhibition space.It attracts more than 1,000exhibitors and 85,000professional visitors from more than 30Asia-Pacific countries.
Tour Description(dragondelight@163.com):
This tour is on join in basis and you have to share the bus and guide with other tourists.The tour will begin at the fixed dates on our website and be conducted exactly in accordance with the route of travel.By joining this kind of tour,you will enjoy the best service with very reasonable price,while making friends with the people from all over the world.
Group Size:
Small group tour with maximum of 18persons.
Minimum 2Adults Guaranteed Departure!
Jian Guo Men Apartment to rent,RMB5500 (Chaoyang District)
Jian Guo Men apartment,with 1huge bedroom,is just situated in ever-popular CBD area,2minutes away from Jian Guo Men underground station.It's several minutes walking distance to Twin Tower and Silk Market and a short bus ride to Wangfujing Shopping Street and Sanlitun Bar Street.It's fully furnished,with wooden floor,well-equipped kitchen and bathroom,large living room and comfortable bedroom.24-hour hot water and entries phone system will provide a safe home.
If you are interested,please call me at 0086-010-63240511or e-mail me at bjrent@126.com.
Looking for a kind person to communicate with each other.Sex:Female
I am an easygoing person.I am learning English.I am looking for a kind people who can study together.My Chinese is quite good.If you are interested in Chinese or Chinese culture,we can communicate with each other.By the way,my English is not too bad.But my dream is to be an English teacher,so I want to be more professional.My dream can't come ture without your help.Thanks in advance!
email:judy10711@yahoo.com.cn

64.Exhibitors to the 19th China Content Broadcasting Network Exhibition come fromD.
A.France          B.Italy         C.Germany         D.Canada
65.Which of the following is true according to the ads?A
A.The Apartment may be suitable for someone in Chaoyang District to rent.
B.If you are good at English you can communicate with Goerge.
C.You have to take a bus to Twin Tower and Silk Market.
D.You can tour with at least 18persons and 2adults.
66.The girl is looking for a kind person in the hope ofB.
A.sharing the rent                       B.preparing for her dream
C.making a boy friend                    D.learning Chinese culture
67.A global traveller is likely toD.
A.e-mail to judy10711@yahoo.com.cn   B.call at 0086-010-63240511
C.e-mail to bjrent@126.com            D.e-mail to dragondelight@163.com.

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

6.Parents,let this be a lesson:Don't leave your child unattended with your ipad.Seven-year-old Faisall Shugaa decided to get himself an early Christams presents in the form of Dino Bucks,which in addition to being an in-game currency of Jurassic World,are also linked to,you know,real money.The total?An unbelievable 5,000,all of which was spent between December 13 and 18.Needless to say,Faisall's father,Mohamed Shugaa,flew into a rage about the charges.As it turns out,the youngster tried his father's Apple ID and password,which surprisingly allowed him to make purchases,mostly to upgrade the dinosaurs available in the vedio game.In a six-day period,Faisall managed to make an impressive 65 transactions (交易),at one point spending some 2,000 over the course of a single hour.
Shugaa,a store owner in the United Kindom,discovered his son's many,many mistakes when he attemped to make a purchase from a supplier.After his own charge was decreased,he called his credit card company.He was put in touch with the fraud(詐騙) team,who asked if he"was aware 60-plus transactions had been made to itunes from December 13 to 18 totaling 3,911 pounds,"he told British newspaper The Metro."I didn't have a clue what they were talking about and I had to check my bank account online to understand what was going on."
After he figured it out,things didn't get much better.
"I was so mad.I'm 32 years old,why would Apple think I would be spending thousands of pounds on buying dinosaurs and upgrading a game?"he said
But don't worry-this story has a happy ending.Despite initially being told by an Apple Support team member that there was no possibility he could get a refund(退款),Shugaa eventually got all his money back,which is lucky for Faisall(considering he would've gotten zero presents and been in even more trouble otherwise).Shugaa,for his part,says that he hopes Apple does something to see to it that no other parents experience the same headache.
Apple,for its part,recommends that parents not share their password.Or at the very least,make sure that your child is using your iDevice under careful supervision(監管).
29.What happened to the seven-year-old boy before Christmas?B
A.His father sent him a credit card as a Christmas present.
B.He successfully upgraded his dinosaurs in the vedio game.
C.His father took him to Jurassic World Park to celebrate Christmas.
D.An Apple Support team sent him some Dino Bucks as a Christmas present.
30.How did Little Faisall make the transactions?C
A.He asked The Metro to help him.
B.He broke his father's bank account.
C.He broke his father's Apple account.
D.His father told him the password of the credit card.
31.The underlined part in the first paragraph probably means his father wasB.
A.More than happy   B.extremely angry    C.very curious   D.greatly confident
32.We can infer from the passage that Faisall's father willA
A.reset his iPad password in no time.
B.never permit his little son to use his iPad.
C.share his iPad password with his little son
D.leave his little son unattended with his iPad.

查看答案和解析>>

科目:高中英語 來源: 題型:書面表達

13.假如你是李華,在蘭州學習的英國朋友Tony給你發郵件說周末要來天水找你玩.請你根據要點提示給Tony寫一封郵件向他介紹這兩天的安排.
1.周五晚上在天水火車站接Tony,住預定酒店;
2.周六參觀天水名勝;
3.周日在家的活動;
4.冬季寒冷,請多備衣物.
注意:1.適當增加情節,以使行文連貫;
    2.詞數100 字左右,開頭和結尾已給出,不計入詞數.
Dear Tony,
I am glad to receive your letter and know that you will come to Tianshui this weekend.
                                                                  
Yours,
Li Hua.

查看答案和解析>>

科目:高中英語 來源: 題型:信息匹配

10.For people with thousands of pages to read,speed reading seems like a manna (甘露) from heaven.In addition,speed reading helps lighten the load of information you have to absorb since it provides a filter that you can use in screening all bits of information before you approach them.
(71)FExamining how much information you need will help you identify how you should read a certain document to maximize your learning and comprehension.Thorough reading may no longer be necessary in some cases,such as when you only need an outline of a certain document.
Another skill that can ease the burden of a reader is the ability to read words in blocks.Make sure you do not spend too long on a certain block.(72)BThis will also make reading less tiresome and boring.
To master this important skill,you have to practice reading more and more words in a certain block at one time.A suggestion shared by some experts regarding this step is to increase the distance between you and the document you are reading.If you can read more and more words in one block,you can cut down on the time it usually takes you to read a certain text and you will be able to read more in a shorter period.
Readers should also practice reducing the number of times they go back to previous sections or blocks.Using a pointer such as the tip of a pencil or pen can also help to make the flow of your reading smoother and faster.(73)AThus,your speed in reading will largely depend on the speed of the movement of your pointer.
If you still find yourself confused about the topic even after you have finished reading the document,do not re-read right away.Re-reading immediately will just lead to slower speed in reading.(74)CGetting your own reading corner will also help.
(75)DContinue practicing and practicing the techniques aforementioned and soon,you'll achieve the reading speed that will work best for you.

A.In this technique,your eyes will follow the tip of the pointer.
B.This saves time and reduces the effort that you have to make.
C.Taking a short break first is recommended before reading the material again.
D.As a final note,the most important point is consistent and deliberate practice.
E.Your invaluable time can be saved if you can have your reading speed doubled.
F.The first step to increase your reading speed is to identify the specific information you need.
G.Reducing the time you spend on a specific number of words in a block will make no difference.

查看答案和解析>>

科目:高中英語 來源: 題型:選擇題

17.-How did you get paid from your work?
-As a rule,we were paid ________.(  )
A.by hourB.by the hourC.by an hourD.by hours

查看答案和解析>>

科目:高中英語 來源: 題型:選擇題

14.The rules state that no books or magazines ________ be taken out of the school reading-room.(  )
A.shouldB.willC.shallD.would

查看答案和解析>>

科目:高中英語 來源: 題型:選擇題

2.People working 10or 11hours a day are more likely to suffer from health problems than _____who go off duty after eight hours.(  )
A.thoseB.thatC.theseD.them

查看答案和解析>>

同步練習冊答案
主站蜘蛛池模板: 亚洲不卡 | 超碰激情| 国产高潮好爽受不了了夜色 | 欧美1区| 黄色国产视频 | 国产日韩欧美亚洲 | 中文无码日韩欧 | 麻豆精品国产91久久久久久 | 中文字幕91 | 欧美色图第一页 | 日本黄色大片 | 久久高清 | 国产欧美日韩综合精品一区二区 | 午夜91 | 精品久久网 | 伊人精品| 免费黄色欧美 | 成人精品久久久 | 久久国产精品免费一区二区三区 | 91高清在线观看 | 日韩欧洲亚洲 | hd国产人妖ts另类视频 | 一区二区精品在线 | 亚洲精品久久久久久久久久久 | 色爽av | 中文字幕免费中文 | 国产日韩欧美一区二区在线观看 | 狠狠综合久久av一区二区小说 | 在线成人| 在线观看欧美日韩视频 | 日韩不卡一区二区 | 自拍偷拍欧美 | 免费av看片| 亚洲精品日韩激情在线电影 | 亚洲欧美中文日韩v在线观看 | 人成亚洲 | 在线不卡av | 欧美成人午夜免费视在线看片 | 国产精品久久久久免费a∨ 国产激情一区二区三区 | 蜜桃免费视频 | 色呦呦在线看 |