欧美色欧美亚洲高清在线观看,国产特黄特色a级在线视频,国产一区视频一区欧美,亚洲成a 人在线观看中文

  1. <ul id="fwlom"></ul>

    <object id="fwlom"></object>

    <span id="fwlom"></span><dfn id="fwlom"></dfn>

      <object id="fwlom"></object>

      限時(shí)作業(yè)1(Book 1 Unit 1)

      時(shí)間:2019-05-14 12:22:25下載本文作者:會(huì)員上傳
      簡(jiǎn)介:寫(xiě)寫(xiě)幫文庫(kù)小編為你整理了多篇相關(guān)的《限時(shí)作業(yè)1(Book 1 Unit 1)》,但愿對(duì)你工作學(xué)習(xí)有幫助,當(dāng)然你在寫(xiě)寫(xiě)幫文庫(kù)還可以找到更多《限時(shí)作業(yè)1(Book 1 Unit 1)》。

      第一篇:限時(shí)作業(yè)1(Book 1 Unit 1)

      限時(shí)作業(yè)1(必修1 Unit 1)Ⅰ.完成句子

      1.大家都能看出他是故意欺騙我。

      Everybody could see that he cheated me

      .2.陰雨連綿的天氣徹底破壞了我們的假期。

      Our holiday was completely spoiled by

      wet days.3.他們一見(jiàn)鐘情。

      They

      with each other at first sight.4.我們到達(dá)時(shí)他們已經(jīng)開(kāi)始收拾行李了。

      We arrived just as they

      their luggage.5.她聽(tīng)膩了他們的印度之行。

      She

      hearing about their trip to India.Ⅱ.語(yǔ)法和詞匯知識(shí)

      1.I think it’s high time that we effective measures to prevent the accidents.A.take

      B.took C.have taken D.are taking 2.It was in Beihai Park where they made a date that the old couple told us their love story.A.the first time B.for the first time C.first time D.on the first time 3.(2012·浙江杭師大附中月考)— Do you still believe in love? — Absolutely.It is not time, money, power or whatever but love can cure our pain.A.who B.which C.that D.what 4.Faced with the threat of terrorism, they have agreed to their differences in politics and unite to defend national security.A.set aside B.set about C.set off D.set up 5.All those about the poor children should be.A.concerned;thanked B.are concerned;thanked C.who are concerned;thanked for D.are concerned;thanked for 6.—

      matters to do the job well—what you are or where you come from? —Neither.It depends on whether you put your heart into it.A.Which is it that C.Which it is that B.What it is that D.What is it which 7.The travellers started early reach Yuntai Mountain before 10 o’clock.A.in order to B.so that C.in order that D.because of 8.It 1920 regular radio broadcasts began.A.was until;when B.was until;that C.wasn’t until;when D.wasn’t until;that 9.I used to quarrel a lot with my parents, but now we well.A.look out C.carry on B.stay up D.get along 10.is known to us all, good friends happiness and value to life.A.It;add B.As;add C.It;add to D.As;add up 11.We were surprised by what the little girl when she was cheated and sold to the mountain village.A.got through B.went through C.live up to D.go against 12.Space exploration has been made with the development of modern science and technology.A.it possible B.it was possible C.that possible D.possible 13.—You are always.Can you tell me the secret? —Taking plenty of exercise every day.A.powerful B.weak C.forceful D.energetic 14.—David, it’s Frank.Could you spare me a few minutes?I need to see you.—

      .But I hope “a few minutes” won’t turn into an hour.A.I’m afraid not B.It doesn’t matter C.I don’t think so D.I guess so 15.—The boy’s vocabulary is limited, isn’t it? —

      .He has an extensive vocabulary.A.You’re right B.That’s OK C.It doesn’t matter D.I guess not Ⅲ.完形填空

      1.Taking frequent short breaks is better for you than one long holiday, psychologists have found.1 believe that people who use their holiday allowance in bursts 2 all in one go are happier.They claimed that people who 3 so-called mini-breaks have more 4 memories than those who spend their holidays for an extended period of time.Dan Ariely, a famous behavioural economist who 5 The Upside of Irrationality, suggested that holidaymakers 6 extended time away by doing some work in the middle of their break 7 this would make them more appreciative of their time away from the 8.The explanation is that people’s enjoyment wanes(減弱)as they become 9 to their holiday lifestyle.Professor Ariely, who 10 at Duke University in North Carolina, said, “On a long 11 , day seven is not as good as day one 12 it is not as exciting.That’s why 13 , going away four times a year provides more 14 than you would expect, and going away for one 15 is not as good as you would expect.”

      , other experts disagree.Tim Harford, the author of Dear Undercover Economist, said that taking an increased 17 of trips would only increase the 18 associated with travelling to and from a holiday destination.He said, “If you 19 three times as many

      holidays into the same amount of leave, you can expect three times as much 20.It’s obvious to me that it’s not worth it.” 1.A.Teachers B.Economists C.Researchers D.Tourists 2.A.rather than B.in spite of C.other than D.in case of 3.A.damage B.take 4.A.clear 5.A.shared C.break up C.denying 8.A.office C.attached C.teaches 11.A.road C.journey C.prefer D.want B.long C.happy D.powerful B.read C.collected D.wrote D.put off B.describing D.saying B.family C.school D.market D.accustomed D.stays B.vacation D.term 6.A.break in B.put away 7.A.predicting 9.A.addicted B.attentive 10.A.surveys B.rests 12.A.because B.so C.if D.although 13.A.in all B.by chance C.in general D.by contrast 14.A.aid B.benefit C.interest D.pressure B.However

      D.number 15.A.day B.year C.season D.week 16.A.Therefore 17.A.price C.pleasure 19.A.wash C.Otherwise D.Still B.risk C.quality B.stress D.effect B.fetch C.pack D.operate 18.A.happiness 20.A.trouble B.time C.information D.money Ⅳ.七選五閱讀理解

      1.根據(jù)短文內(nèi)容, 從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。Imagine that you are swimming in the middle of an ocean.You look down and see a wonderful underwater land of colours and fish of all shapes and sizes.This is the huge and colourful land of coral and the home of millions of different fish.1 Therefore, most coral reefs started developing over 10,000 years ago.Coral reefs are living structures built up over thousands of years by tiny animals called polyps(珊瑚蟲(chóng)), which usually live together in groups.Each polyp makes a stony skeleton(骨骼)around its body, and the skeletons of all the polyps in a group are joined together.When

      the polyps die, their bodies decay.Their hard skeletons remain behind.2 Gradually, over long periods of time, reefs of coral skeletons are built up in the ocean, with living coral on the surface.3 It stretches for more than 1300 miles along the Northern Eastern coast of Australia.The Great Barrier Reef has more than 2600 kinds of coral altogether.It is the largest group of coral in the world.All together, it covers an area about half the size of Texas.The Great Barrier Reef does a lot of things for a lot of people, not just fish.It gives the fishermen plenty of fish, gives the tourists something to look at, and gives the scientists something to study.4 This happens by pollution and throwing anchors on the Great Barrier Reef.Worldwide, there are more than 4000 kinds of reef fish.The Great Barrier Reef supports about 1500 different species of fish.Some of the fish that live in it are crabs, sea turtles, sea sponges, and colourful marine worms.5 Those are only some of the species out of the thousand, and still we find more species every year.However, if we don’t start protecting the reef the fish will be in danger or eventually die.A.Coral only grows a few inches each year.B.New polyps grow on the top of the ones that died.C.You realize it is the home of millions of different fish.D.Here are some facts about coral that are really interesting.E.The Great Barrier Reef is one of the earth’s natural wonders.F.However, many people kill parts of it, and it is in danger of extinction.G.Also, you would probably see a big blue starfish, snails with beautiful shells and sharks.Ⅴ.短文改錯(cuò)

      1.One evening, Helen was preparing her examination in the basement of the house.Her parents had gone out shopping.Suddenly, he heard footsteps on the floor below.Known that she was the only person at home, she was frightened.Obviously, a thief has come in through the window that had been left opened for fresh air.Picking up her courage, Helen took a toy gun from the cupboard and went to upstairs.On her way, she shouted, “George, take the dog out.” To frightened the thief, she turned off some lights.The thief must have heard all the noises but rushed out through the window where he came in.Now, Helen felt somewhat relieved.## 答案:

      限時(shí)作業(yè)1(必修1 Unit 1)Ⅰ.完成句子

      1.on purpose 2.a series of 3.fell in love 4.were packing up 5.was tired of Ⅱ.語(yǔ)法和詞匯知識(shí)

      1.B 在It’s high time that...句型中, 從句通常用虛擬語(yǔ)氣, 謂語(yǔ)動(dòng)詞用一般過(guò)去式。句意:我認(rèn)為的確到我們采取有效措施阻止事故發(fā)生的時(shí)候了。故B項(xiàng)正確。

      2.B 這是一個(gè)強(qiáng)調(diào)句, 被強(qiáng)調(diào)的部分是in Beihai Park, 其后跟有where引導(dǎo)的定語(yǔ)從句。句意:這對(duì)老夫婦就是在他們第一次約會(huì)的北海公園里給我們講了他們的愛(ài)情故事。for the first time作狀語(yǔ)修飾made a date, 故B項(xiàng)正確。

      3.C 句意:——你還相信愛(ài)嗎?——非常相信。不是時(shí)間、金錢(qián)、權(quán)力而是愛(ài)能治愈我們的痛苦。這是一個(gè)強(qiáng)調(diào)句, 被強(qiáng)調(diào)部分用not...but連接。

      4.A 句意:面對(duì)恐怖主義的威脅, 他們同意將政治上的分歧放在一邊, 團(tuán)結(jié)起來(lái)保衛(wèi)國(guó)家的安全。set aside “把??放在一邊”;set about “開(kāi)始著手(做??)”;set off “出發(fā), 引爆”;set up “建立”。根據(jù)句意選A項(xiàng)。

      5.A 考查非謂語(yǔ)動(dòng)詞及被動(dòng)語(yǔ)態(tài)。concerned...此處為過(guò)去分詞短語(yǔ)作后置定語(yǔ), 修飾all those;后一個(gè)空應(yīng)用過(guò)去分詞構(gòu)成被動(dòng)語(yǔ)態(tài)。句意:所有那些關(guān)心貧困兒童的人都應(yīng)該受到感謝。6.A 考查強(qiáng)調(diào)句型的特殊疑問(wèn)句。由or可以判斷, 此句中疑問(wèn)詞用which, which后用疑問(wèn)語(yǔ)序, 而which 又是強(qiáng)調(diào)句中被強(qiáng)調(diào)的部分, 因此強(qiáng)調(diào)句中用that, 故選A項(xiàng)。

      7.A “in order to + 動(dòng)詞原形”引導(dǎo)目的狀語(yǔ);so that 和in order that引導(dǎo)從句;because of 引導(dǎo)原因狀語(yǔ), 后面接名詞或動(dòng)詞-ing形式。句意為:游客們?yōu)榱嗽谑c(diǎn)以前到達(dá)云臺(tái)山, 很早就出發(fā)了。

      8.D not...until的強(qiáng)調(diào)句型為:It is/was + not until...+ that/who...。

      9.D 句意:我以前經(jīng)常跟父母吵架, 但現(xiàn)在我們相處得很好。look out “當(dāng)心, 小心”;stay up “熬夜, 挺住”;carry on “繼續(xù), 進(jìn)行”;get along “相處”, get along well “相處得好”。從前面的quarrel a lot和but可知, 這里指 “相處得好”。

      10.B 句意:我們大家都知道, 好朋友會(huì)讓生活更幸福、更有意義。as引導(dǎo)非限制性定語(yǔ)從句, 用逗號(hào)和主句分開(kāi)了。add...to...“把??增加到??, 為??增添??”;add to “增加, 增添”;add up “加起來(lái)”。

      11.B 句意:我們都被這個(gè)受騙后被賣(mài)到山村的小女孩的經(jīng)歷震驚了。go through “經(jīng)受, 經(jīng)歷”;get through “通過(guò), 用完, 完成”;live up to “達(dá)到, 符合, 不辜負(fù)(別人的期望)”;go against “反對(duì), 不利”。根據(jù)句意選B項(xiàng)。

      12.D make + 賓語(yǔ) + 賓語(yǔ)補(bǔ)足語(yǔ)(多由名詞、形容詞、動(dòng)詞原形或過(guò)去分詞來(lái)充當(dāng))意思是 “使??”。題干中make用作了被動(dòng)語(yǔ)態(tài), 形容詞possible作主語(yǔ)補(bǔ)足語(yǔ)。句意:現(xiàn)代科學(xué)技術(shù)的發(fā)展已經(jīng)使得太空探索成為可能。

      13.D You are always energetic意為 “你總是充滿活力”。powerful “強(qiáng)大的, 有力的”;weak “虛弱的, 薄弱的”;forceful “強(qiáng)有力的, 堅(jiān)強(qiáng)的, 有說(shuō)服力的”;energetic “精力充沛的”。故D項(xiàng)正確。

      14.D 句意:——大衛(wèi), 我是弗蘭克。你有幾分鐘時(shí)間嗎?我想見(jiàn)你?!蚁胛矣袝r(shí)間, 但我希望幾分鐘別變成一小時(shí)。I’m afraid not “恐怕不行”;It doesn’t matter “沒(méi)關(guān)系”;I don’t think so “我想我沒(méi)空”。根據(jù)句意, 選D項(xiàng)。

      15.D I guess not意為 “我不那么認(rèn)為”。根據(jù)所提供的情景, 可判斷說(shuō)話人不同意對(duì)方的觀點(diǎn)。句意:——這個(gè)男孩的詞匯量有限, 是嗎?——我不那么認(rèn)為。他的詞匯量很大。Ⅲ.完形填空

      1.C 本文敘述了一項(xiàng)關(guān)于長(zhǎng)假與短假帶給人們的不同心理感受的研究成果, 所以這里指研究人員。2.A 前后的成分對(duì)比, 用rather than, 表示“而不是”。心理學(xué)家發(fā)現(xiàn), 人們度短假比度長(zhǎng)假更開(kāi)心。

      3.B 根據(jù)前句中who use their holiday allowance in bursts可知, 這里指度短假的人, 故用take。4.C 根據(jù)第一段中is better for you可知, 度短假的人有更快樂(lè)的回憶。5.D 丹·艾瑞里 “寫(xiě)” 了這本書(shū)。

      6.C 根據(jù)句中doing some work in the middle of their break可得出答案。break up“分開(kāi), 打破”。

      7.D 后半句內(nèi)容為丹·艾瑞里發(fā)表的言論, 故用saying。8.A 這里指人們離開(kāi)辦公室去度假, 故用office。

      9.D 根據(jù)語(yǔ)境可知, 當(dāng)人們適應(yīng)了假期的生活方式后, 他們的樂(lè)趣就會(huì)減弱。be accustomed to表示 “適應(yīng)”。

      10.C 根據(jù)艾瑞里的稱(chēng)謂professor判斷, 他應(yīng)在杜克大學(xué)教書(shū)。11.B 根據(jù)句中day seven和day one可知, 這里指在休一次長(zhǎng)假的時(shí)候。12.A 從前后句意看是因果關(guān)系。

      13.C 根據(jù)句中four times a year可知, 每年外出度假四次是從總體上來(lái)說(shuō)的。14.B 根據(jù)句中is not as good as對(duì)比可知, 這里是度假帶來(lái)的益處。

      15.D 根據(jù)語(yǔ)境和前文day seven is not as good as day one可推斷, 這里指外出一周。16.B 根據(jù)句中other experts disagree可知, 這里用however表示轉(zhuǎn)折。17.D 根據(jù)語(yǔ)境可知蒂姆·哈福德認(rèn)為, 這里指增加旅行的次數(shù)。18.B 根據(jù)后句內(nèi)容可知, 這里指往返于目的地帶來(lái)的壓力。

      19.C 根據(jù)句中the same amount of leave可推斷, 這里指如果把長(zhǎng)假分三次來(lái)休。20.A 根據(jù)句中it’s not worth it可推斷, 出行的麻煩就變?yōu)樵瓉?lái)的三倍。Ⅳ.七選五閱讀理解 1.A 2.B 3.E 4.F 5.G Ⅴ.短文改錯(cuò)

      1.One evening, Helen was preparing her examination in the basement of the house.Her parents had gone out shopping.Suddenly, heard footsteps on the floor.that she was the only person at home, she was frightened.Obviously, a thief has come in through the window that had been left for fresh air.Picking up her courage, Helen took a toy gun from the cupboard and went to upstairs.On her way, she shouted, “George, take the dog out.” To the thief, she turned

      some lights.The thief must have heard all the noises rushed out through the window where he came in.Now, Helen felt somewhat relieved.

      第二篇:警鐘長(zhǎng)鳴限時(shí)作業(yè)

      限時(shí)作業(yè):

      學(xué)校班級(jí)姓名判斷對(duì)錯(cuò):

      (1)摩托車(chē)駕駛員駕駛摩托車(chē)必須戴安全帽。()

      (2)汽車(chē)駕駛員開(kāi)車(chē)時(shí)也要戴安全帽。()

      (3)過(guò)馬路時(shí)遇到紅燈,但是沒(méi)有車(chē),我快快過(guò)馬路。()

      (4)過(guò)馬路時(shí)不走斑馬線。()

      (5)翻越馬路上的護(hù)欄。()

      (6)在馬路邊上玩皮球。()

      (7)黃燈亮?xí)r,不準(zhǔn)車(chē)輛.行人通行,但已越過(guò)停止線的車(chē)輛

      和進(jìn)入人行橫道的行人,可以繼續(xù)通行。()

      自評(píng)______組長(zhǎng)評(píng)

      第三篇:③等比數(shù)列課后限時(shí)作業(yè)

      課后限時(shí)作業(yè)(二十六)

      (60分鐘,150分)

      (詳解為教師用書(shū)獨(dú)有)

      A組

      一、選擇題(本大題共6小題,每小題7分,共42分)

      1.(2008·福建)設(shè){an}是公比為正數(shù)的等比數(shù)列,若a1=1,a5=16,則數(shù)列{an}前7項(xiàng)的和為()

      A.63B.64C.127D.128

      解析:a1=1,a5=16,所以q

      41-2而S7==127.1-

      2答案:C

      2.已知等比數(shù)列{an}滿足a1+a2=3,a2+a3=6,則a7=()

      A.64B.81C.128D.24

      3解析:因?yàn)閝=

      答案:A

      3.在等比數(shù)列{an}中,a1=1,a10=3,則a2a3a4a5a6a7a8a9=()

      A.81B.27

      C.7?a5?16,因?yàn)閝>0,所以q=2,從a1a2?a3 =2,所以a1+a1q=3 ? a1=1,a7=1×27-1=64.a1?a2D.243

      解析:由等比數(shù)列的性質(zhì)可得,a1a10=a2a9=a3a8=a4a7=a5a6,從而a2a3a4a5a6a7a8a9=(a1a10)=81.答案:A

      4.(2010·遼寧)設(shè)Sn為等比數(shù)列{an}的前n項(xiàng)和,已知3S3=a4-2,3S2=a3-2,則公比q=()

      A.3B.4C.5D.6

      解析:兩式相減得,3a3=a4-a3,a4=4a3,所以q=

      答案:B

      5.設(shè)等比數(shù)列{an}的前n項(xiàng)和為Sn,若S6∶S3=1∶2,則S9∶S3等于()

      A.1∶2B.2∶3C.3∶4D.1∶3

      解析:因?yàn)閧an}為等比數(shù)列,所以S3,S6-S3,S9-S6成等比數(shù)列,即(S6-S3)=S3·(S9-S6).又因24a4 =4.a3

      為S6∶S3=1∶2,所以答案:C

      1213

      S3 =S3(S9-S3),即 S3=S9,所以S9∶S3=3∶4.244

      6.(2010·湖北)已知等比數(shù)列{an}中,各項(xiàng)都是正數(shù),且a1,12a3,2a2成等差數(shù)列,則a9+a10a7+a8=()

      A.1+ C.3+2

      B.1-

      D.3-2

      解析:依題意可得,2×

      122

      a3=a1+2a2,即a3=a1+2a2 ? a1q=a1+2a1q,q=1+2q,解得

      q=1+ 2

      q=1-(舍去),答案:C

      二、填空題(本大題共4小題,每小題6分,共24分)

      7.已知等比數(shù)列{an}的前三項(xiàng)依次為a-1,a+1,a+4,則公比q等于解析:(a+1)=(a-1)(a+4)答案:

      ? a=5,q=

      a?16

      3??.a?1

      423 2

      8.(2010·福建)在等比數(shù)列{an}中,若公比q=4,且前3項(xiàng)之和等于21,則該數(shù)列的通項(xiàng)公式an.解析:由題意知a1+4a1+16a1=21,解得a1=1,所以通項(xiàng)an=4答案:4

      n-

      1n-1

      .n

      9.若數(shù)列{an}的前n項(xiàng)和為Sn=3-a,數(shù)列{an}為等比數(shù)列,則實(shí)數(shù)解析:由題易知S1=3-a,S2=9-a,S3=27-a,故a1=3-a,a2=6,a3=18.若{an}是等比數(shù)列,則

      618

      ? =3,則a=1.3?a6

      答案:1

      10.設(shè)f(n)=a+a+a+a+…+a

      710

      3n+10

      (a≠0,n∈N),則f(n)=.解析:通項(xiàng)an=a

      3n-2

      a(1?an?4),f(n)是前n+4項(xiàng)的和,當(dāng)a=1時(shí),f(n)=n+4,當(dāng)a≠1時(shí),f(n)=.1?a

      ?n?4,a?1,?

      答案:?a(1?an?4),a?1.??1?a

      三、解答題(本大題共2小題,每小題12分,共24分)11.(2011屆·福州質(zhì)檢)數(shù)列{an}的前n項(xiàng)和Sn=n+2n.(1)求數(shù)列{an}的通項(xiàng)公式;

      (2)若正項(xiàng)等比數(shù)列{bn}滿足b2=S1,b4=a2+a3,求數(shù)列{bn}的前n項(xiàng)和Tn.解:(1)a1=S1=3,當(dāng)n≥2時(shí),an=Sn-Sn-1=n+2n-[(n-1)+2(n-1)]=2n+1,符合n=1題意,所以an=2n+1(n∈N*).(2)設(shè)等比數(shù)列{bn}的公比為q,則 b2=3,b4=5+7=12,即b1q=3,b1q=12,12.已知數(shù)列{an}的前n項(xiàng)和為Sn,且Sn=(1)求a1,a2;

      (2)證明數(shù)列{an}是等比數(shù)列,并求Sn.(1)解:因?yàn)镾n=

      (an-1)(n∈N*).3(an-1), 3

      (2)證明:由an=Sn-Sn-1?an=(an-an-1)?an=-為首項(xiàng),公比q=-

      1311an-1(n≥2),所以{an}構(gòu)成以a1=-2

      2的等比數(shù)列.2

      B組

      一、選擇題(本大題共2小題,每小題8分,共16分)

      1.在等比數(shù)列{an}中,a1=2,前n項(xiàng)和為Sn,若數(shù)列{an+1}也是等比數(shù)列,則Sn等于()A.2n+

      1-2B.3nC.2nD.3-1

      n-1

      n

      解析:因數(shù)列{an}為等比數(shù)列,則an=2q(an+1+1)=(an+1)(an+2+1)

      22,因?yàn)閿?shù)列{an+1}也是等比數(shù)列,所以

      ?a2n+1+2an+1=anan+2+an+an+2?an+an+2=2an+1?

      an(1+q-2q)=0?q=1.即an=2,所以Sn=2n,故選C.答案:C

      2.已知{an}是等比數(shù)列,a2=2,a5=

      -n,則a1a2+a2a3+…+anan+1=()

      4-n

      A.16(1-4)B.16(1-2)C.3232-n-n

      (1-4)D.(1-2)3

      3解析:因?yàn)閝=

      11a51

      =,所以q=,a1=4,數(shù)列{an·an+1}是以8為公比的等比數(shù)列,24a28

      不難得出答案為C.答案:C

      二、填空題(本大題共2小題,每小題8分,共16分)

      3.在等比數(shù)列中,已知a9+a10=1,a19+a20=10,則a99+a100.解析:a19+a20=(a9+a10)·q

      ?q10=10,利用a9+a10,a19+a20,…,a99+a100成等比數(shù)列,得

      a99+a100=(a9+a10)·q=109.答案:109

      4.(2010·天津)設(shè){an}是等比數(shù)列,公比,Sn為{an}的前n項(xiàng)和.記Tn=

      17Sn?S2n,an?

      1n∈N*.設(shè)Tn0為數(shù)列{Tn}的最大項(xiàng),則n0.解析:本題主要考查了等比數(shù)列的前n項(xiàng)和公式與通項(xiàng)及平均值不等式的證明,屬于中檔題

      .因?yàn)?/p>

      +

      n

      ≥8,當(dāng)且僅當(dāng)

      所以當(dāng)n=4時(shí)T有最大值.=4,即n=4時(shí)取等號(hào),n

      0n

      答案:

      4三、解答題(本大題共2小題,每小題14分,共28分)5.已知數(shù)列{an}的首項(xiàng)a1=

      ?1?22an,an+1= ,n=1,2,3,….證明:數(shù)列??1?是等比數(shù)列

      .3an?1?an?

      所以數(shù)列?

      ?1?11

      ?1?是以為首項(xiàng),為公比的等比數(shù)列.22?an?

      6.(2010·全國(guó)Ⅱ)已知{an}是各項(xiàng)均為正數(shù)的等比數(shù)列,且

      (1)求{an}的通項(xiàng)公式;

      ?1?

      (2)設(shè)bn= ?an??,求數(shù)列{bn}的前n項(xiàng)和Tn.an??

      解:(1)設(shè)公比為q,則an=a1q

      n-1

      .由已知有

      第四篇:19 草船借箭限時(shí)作業(yè)

      草船借箭

      學(xué)校班級(jí)姓名等級(jí)

      一、看拼音寫(xiě)詞語(yǔ)。

      dù jìdū dutuī quayán chítàn tīnɡm(xù)àn zǐsī zì()()()()()()()diào dùshuǐ zhàil?i ɡǔ nà hǎnzhī yuánch?nɡ xiànɡxiàn qī()()()()()()zhí yǒu miào y?nɡsh?n jī miào suàn

      ()()

      二、在括號(hào)里填上恰當(dāng)?shù)年P(guān)聯(lián)詞。

      1、周瑜()知道了,我的計(jì)劃()完了。

      2、()諸葛亮()能在三天之內(nèi)造十萬(wàn)支箭。

      3、()諸葛亮識(shí)天文,懂地理,()他答應(yīng)周瑜三天內(nèi)造十萬(wàn)支箭。

      三、按課文內(nèi)容填空。

      1、課文是按照事情發(fā)展順序?qū)懙?,先?xiě)了,接著寫(xiě)了,著重寫(xiě)了,最后寫(xiě)了。

      四、多項(xiàng)選擇:

      從文中哪里可以看出諸葛亮“神機(jī)妙算”?正確的打“√”。

      ①他知道第三天四更時(shí)分一定有大霧。()

      ②他算好了受箭的方法,二十條船可以繩索相連,一字排開(kāi),兩面受箭。()

      ③他算好了人,知道魯肅忠厚誠(chéng)信向他借船沒(méi)事,周瑜聰明過(guò)人,曹操生性多疑。()④諸葛亮能算,因?yàn)樗巧裣?。(?/p>

      五、品味探究。

      1、“魯肅回來(lái)報(bào)告周瑜,果然不提借箭的事,只說(shuō)??”

      從這句話中,我感受到魯肅。

      2、從“諸葛亮又下令把船掉過(guò)來(lái),船頭朝東、船尾朝西,仍舊擂鼓吶喊”從這句話中,我感受到諸葛亮。

      3、“霧這樣大,曹操定不敢派兵出來(lái)。我們只管飲酒取樂(lè),天亮了就回去?!?/p>

      這段話是對(duì)說(shuō)的,表現(xiàn)了他的特點(diǎn)。

      4、從“曹操下令說(shuō):‘江上霧大??不要輕易出動(dòng)。只叫弓弩手朝他們射箭??’”從這句話中,我感受到諸葛亮,曹操。

      第五篇:限時(shí)作業(yè)2(寫(xiě)寫(xiě)幫整理)

      限時(shí)作業(yè)2(必修1 Unit 2)

      Ⅰ.完成句子

      1.教育在人們的生活中起著重要的作用。

      Educationin people’s life.2.這本書(shū)是以一個(gè)發(fā)生在1930年的真實(shí)故事為背景的。

      The booka true story that happened in 1930.3.你能到我公寓來(lái)看看嗎?

      Would youmy flat?

      4.這所學(xué)校里不止一個(gè)人精通英語(yǔ)。

      More than one personEnglish in the school.5.他們開(kāi)始考慮如何利用這一機(jī)會(huì)。

      They began to think about how tothis chance.Ⅱ.語(yǔ)法和詞匯知識(shí)

      1.His Shandongwas so strong that I couldn’t understand a word he was saying.A.noiseB.voice

      C.accent D.sound

      2.Mary asked me, “Have you really realized the part the computer hasin the daily life?”

      A.made B.given

      C.caused D.played

      3.—We are having a little party at the weekend.Can you and Mary come?

      —.Thank you.But I’ll have to visit my grandpa.A.If you don’t mind.B.That sounds nice

      C.No way D.Not at all

      4.The manager requested that no oneof his decision until the next meeting.A.would tell B.told

      C.be told D.would be told

      5.—Go for a trip to Qingdao, OK?

      —.I’d like to see the sea.A.I couldn’t agree more B.I’m afraid not

      C.I believe not D.I don’t think so

      6.This design issatisfactory.So you’ll have to try your best to better it.A.nothing but B.anything but

      C.all but D.everything but

      7.—So you didn’t say hello to her last night?

      —Well, I stopped and smiled when I saw her, but sheme and walked on.A.ignored B.refused

      C.denied D.missed

      8.It turned out that one of the children I thought a girl wasa boy.A.specially B.usually

      C.especially D.actually

      9.I didn’tmy primary school classmate Jane until I listened to her

      self-introduction.A.know B.recognize

      C.find D.realize

      10.Jack recommended me a few foreign movies, butwas to my taste.A.all B.neither

      C.some D.none

      11.It is raining, so stop punishing the child andhimcome in the room.A.make;to B.get;to

      C.keep;/ D.get;/

      12.The number of people invitedfifty, but a number of themabsent for different reasons.A.were;was

      C.was;were B.was;was D.were;were

      13.Judging from the number of the audience, the movieon the novel written by Jin Yong is well worth seeing.A.basing B.is based

      C.based D.to be based

      14.(2012·陜西西安地區(qū)八校聯(lián)考)If better use isof your spare time, you’ll make greater progress in it.A.spent B.made

      C.taken D.thought

      15.I’ve been to many countries, New Zealand,.A.as B.like

      C.such as

      Ⅲ.閱讀理解

      1.Most people consider skydiving(高空跳傘)a product of the 20th century, but its history actually goes further back than that.The Chinese attempted parachuting(跳傘)in the 10th century, a thousand years before we did.The Chinese did what we would today call base diving;that is, they jumped off a place that would allow them to float from a height to the ground.The first person to attempt to parachute was a Frenchman named Jacques Garnerin.He jumped from his air balloon at the end of the 18th century and did tricks on the way down and stupefied the crowds by landing safely on the ground.At the end of the 19th century, Kathie Paulus, a brave German woman, became famous for her skydiving skills.Once the airplane was invented, skydiving took on a whole new form.The airplane made it possible to dive from greater heights at greater speeds, allowing for more range in the movements in the air.A woman named Tiny Broadwick became the first woman to jump from a plane in 1913 and to dive free fall in 1914.Skydiving was not called skydiving until the middle of the 1950s, when Ronald Young coined(創(chuàng)造)the word.It had been called parachuting prior to this and was primarily used by the military to land troops in inland locations, or for pilots to bail(跳傘)out of their planes when necessary.Once World War Ⅰ was over, parachuting became a sport, which we now call skydiving.After World War Ⅱ, this activity became more a hobby than a military maneuver(行動(dòng)).Soldiers were trained in parachuting and enjoyed the thrill so much that they continued on for fun.From D.for example

      this, teams and competitions were formed.Skydiving schools appeared in the late 1950s and now it is a recognized extreme sport enjoyed by many.1.The underlined word “stupefied” in Paragraph 2 probably means “”.A.disappointed B.encouraged

      C.surprised D.attacked

      2.Who was the first woman to jump from a plane?

      A.Jacques Garnerin.B.Kathie Paulus.C.Tiny Broadwick.D.Ronald Young.3.Which of the following is TRUE?

      A.The Chinese attempted different skydiving skills in the 10th century.B.Skydiving became popular after the airplane was invented.C.The word skydiving was first used in a military action.D.There were no skydiving schools until the late 1950s.4.What would be the best title for this text?

      A.The history of skydiving

      B.The popularity of skydiving

      C.What is skydiving?

      D.Why is skydiving an extreme sport?

      Ⅳ.七選五閱讀理解

      1.根據(jù)短文內(nèi)容, 從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。1 A well-developed and presented story can cut across age barriers and will hold the interest and reach its listeners.Knowing and applying the basics of storytelling will strengthen your stories.Finding stories:

      There are many kinds of stories you can work with, including folktales from many countries and cultures, humorous tales and traditional fairytales in numerous versions, etc.2 With time and experience you will perhaps want to tell your own personal stories.Adapting to our audience:

      The audience play a very important role in oral story-telling.3 I have observed that our audiences have lost some of the skills to follow a story and see things in their minds, which makes storytelling more difficult.Therefore, you should keep your story brief and simple.Attracting the attention of our audience:

      Many factors affect the attention of your listeners.So tellers always need to be sensitive to the audience and may need to regain their attention before continuing.In order to hold your audience’s attention all the time, you’d better use volunteers from the audience in your story, or have the audience participate in hand motions or making sound effects.4Concluding:

      Once you finish the story, stop!5 Let them go away thinking about what has been said, and drawing their own meaning from it!

      A.Effective storytelling is a fine and beautiful art.B.The more you practice, the more skilled you will become.C.Don’t feel you have to explain everything, or tie together all loose ends.D.It is recommended you start with simple folktales.E.It is the most important that you should tell your story in your own words with enthusiasm.F.That’s because oral storytelling involves much interaction between the teller and the hearer.G.Also, making a distinct change in your pace, voice, or mood is helpful in regaining your audience’s attention.Ⅴ.書(shū)面表達(dá)

      1.最近, 你校學(xué)生會(huì)發(fā)起了 “杜絕食堂浪費(fèi)” 的活動(dòng), 要求各班舉辦英語(yǔ)主題班會(huì)。請(qǐng)你按照下面要點(diǎn)提示準(zhǔn)備一篇英語(yǔ)演講稿。

      1列舉學(xué)校食堂浪費(fèi)現(xiàn)象;

      2陳述浪費(fèi)造成的不良后果;

      3號(hào)召同學(xué)們從自身做起, 杜絕浪費(fèi)。

      注意:1詞數(shù)100左右, 演講稿的開(kāi)頭和結(jié)尾已經(jīng)寫(xiě)好, 不計(jì)入總詞數(shù)。

      2可適當(dāng)發(fā)揮, 以使行文連貫。

      Dear classmates,May I have your attention, please?I’d like to talk about the problem of wasting in our canteen.That’s all.Thank you!

      ##

      答案:

      Ⅰ.完成句子

      1.plays an important role/part 2.is based on 3.come up to;for a visit 4.has a good command of 5.make use of

      Ⅱ.語(yǔ)法和詞匯知識(shí)

      1.C 句意:他的山東口音這么重以至于他說(shuō)的話我一句也沒(méi)聽(tīng)懂。noise “噪音”;voice “聲音”;accent “口音”;sound “聲音”。

      2.D play a part in...意為 “在??中發(fā)揮作用”, A、B和C選項(xiàng)不與the part構(gòu)成固定搭配。句意:瑪麗問(wèn)我, “你真的意識(shí)到電腦在日常生活中所發(fā)揮的作用了嗎?”

      3.B 對(duì)于對(duì)方的邀請(qǐng), 要先表示感謝, 即使不能接受邀請(qǐng), 語(yǔ)氣也要委婉。no way 用來(lái)表示堅(jiān)決拒絕。not at all “一點(diǎn)也不”, 用于回答別人的道歉。if you don’t mind “如果你不介意的話”。

      4.C 句意:經(jīng)理要求在下次會(huì)議之前, 他的決定不能告訴任何人。request 后面接的賓語(yǔ)從句要用 “should + 動(dòng)詞原形” 的虛擬語(yǔ)氣形式, 其中should可省略;no one 和tell之間為被動(dòng)關(guān)系, 故用被動(dòng)語(yǔ)態(tài), 因此C項(xiàng)正確。

      5.A 從 “I’d like to see the sea” 可知, 這里是同意去青島旅游的建議, 故選A項(xiàng), 意為 “完全同意”。其他選項(xiàng)都是對(duì)對(duì)方提議的否定, 故不符合語(yǔ)境。

      6.B 句意:這個(gè)設(shè)計(jì)絕不令人滿意, 因此你要全力來(lái)改善它。A項(xiàng)意為 “僅僅”;B項(xiàng)意為 “絕不”;C項(xiàng)意為 “幾乎, 差不多”;D項(xiàng)意為 “除了??之外所有的??”。根據(jù)句意選B項(xiàng)。

      7.A ignore “不理睬, 忽視”;refuse “拒絕”;deny “否定, 否認(rèn)”;miss “錯(cuò)過(guò)”。第二句話的意思:哦, 當(dāng)我看到她時(shí)我停下來(lái)向她微笑, 但她不理我繼續(xù)向前走。

      8.D 句意:其中一個(gè)孩子我原以為是個(gè)女孩, 結(jié)果其實(shí)是個(gè)男孩。specially “特別地, 專(zhuān)

      門(mén)”;usually “通常”;especially “極其, 非?!?actually “實(shí)際上”。根據(jù)句意選D項(xiàng)。

      9.B 句意:直到聽(tīng)了簡(jiǎn)的自我介紹我才認(rèn)出她是我的小學(xué)同學(xué)。recognize “認(rèn)出, 承認(rèn), 認(rèn)可”。

      10.D 句意:杰克向我推薦了幾部外國(guó)電影, 但是沒(méi)有一部合我的口味。A項(xiàng)意為 “(三者及其以上)都”;B項(xiàng)意為 “(兩者)都不”;C項(xiàng)意為 “一些”;D項(xiàng)意為 “(三者或三者以上)都不”。只有D項(xiàng)符合語(yǔ)境。

      11.B get sb.to do sth.意為 “讓某人做某事”。keep 后面不能跟不定式作賓補(bǔ);make 后面跟不定式作賓補(bǔ)時(shí)不帶to。所以答案選B項(xiàng)。句意:下雨了, 不要再懲罰孩子了, 讓他進(jìn)屋吧。

      12.C“the number of + 可數(shù)名詞復(fù)數(shù)” 作主語(yǔ)時(shí), 表示 “??的數(shù)量”, 謂語(yǔ)動(dòng)詞用單數(shù)形式;“a number of + 可數(shù)名詞復(fù)數(shù)” 作主語(yǔ)時(shí), 表示 “很多??”, 謂語(yǔ)動(dòng)詞用復(fù)數(shù)形式。句意:受邀請(qǐng)的人數(shù)是五十, 但是他們中很多人由于不同的原因缺席了。

      13.C 在主句中, based on the novel written by Jin Yong作the movie的后置定語(yǔ), 意為 “the movie was based on the novel written by Jin Yong”。be based on意為 “以??為基礎(chǔ)”。句意:從觀眾的數(shù)量來(lái)看, 這部在金庸的小說(shuō)基礎(chǔ)上改編而來(lái)的電影很值得一看。

      14.B 句意:如果你能充分利用你的業(yè)余時(shí)間的話, 你就會(huì)取得更大的進(jìn)步。make better use of “更充分利用”。

      15.D for example 和such as 均可表示列舉, 前者用于舉例說(shuō)明, 一般只列舉同類(lèi)人或事物中的一個(gè), 作插入語(yǔ), 用逗號(hào)隔開(kāi), 可置于句首、句中或句末;后者用于列舉事物, 常用于列舉一系列的事物, 并且后面不用逗號(hào)。句意:我去過(guò)很多國(guó)家, 比如新西蘭。

      Ⅲ.閱讀理解

      1.C 猜測(cè)詞義題。根據(jù)第二段語(yǔ)境可知, 雅克·加納林在下降的過(guò)程中做了很多特技動(dòng)作并安全降落, 故可以推測(cè)他的表演讓觀眾目瞪口呆。故選C項(xiàng)。

      2.C 細(xì)節(jié)理解題。根據(jù)第三段最后一句 “A woman named Tiny Broadwick became the first woman to jump from a plane in 1913...”可知C項(xiàng)正確。

      3.D 細(xì)節(jié)理解題。根據(jù)最后一段末句 “Skydiving schools appeared in the late 1950s” 可知D項(xiàng)正確。

      4.A 主旨大意題。通讀全文可知, 本文按照時(shí)間順序講述了特技跳傘運(yùn)動(dòng)的歷史。故選A項(xiàng)。Ⅳ.七選五閱讀理解

      1.A 2.D 3.F 4.G 5.C

      Ⅴ.書(shū)面表達(dá) 1.Dear classmates,May I have your attention, please?I’d like to talk about the problem of waste in our canteen.As we all know, the problem of waste in our canteen is severe.For example, some students just throw away what they don’t like eating.Some leave the water running after doing the dishes and leave the air-conditioner on after leaving the canteen.It is not only a waste of money, but also makes global warming even worse.In my opinion, it is everybody’s duty to fight against waste.On the one hand, we should form the habit of eating what we order.On the other hand, we should make it a rule to save water and electricity when possible.That’s all.Thank you!

      下載限時(shí)作業(yè)1(Book 1 Unit 1)word格式文檔
      下載限時(shí)作業(yè)1(Book 1 Unit 1).doc
      將本文檔下載到自己電腦,方便修改和收藏,請(qǐng)勿使用迅雷等下載。
      點(diǎn)此處下載文檔

      文檔為doc格式


      聲明:本文內(nèi)容由互聯(lián)網(wǎng)用戶自發(fā)貢獻(xiàn)自行上傳,本網(wǎng)站不擁有所有權(quán),未作人工編輯處理,也不承擔(dān)相關(guān)法律責(zé)任。如果您發(fā)現(xiàn)有涉嫌版權(quán)的內(nèi)容,歡迎發(fā)送郵件至:645879355@qq.com 進(jìn)行舉報(bào),并提供相關(guān)證據(jù),工作人員會(huì)在5個(gè)工作日內(nèi)聯(lián)系你,一經(jīng)查實(shí),本站將立刻刪除涉嫌侵權(quán)內(nèi)容。

      相關(guān)范文推薦

        XX中學(xué)限時(shí)作業(yè)實(shí)施方案

        XX中學(xué)限時(shí)作業(yè)實(shí)施方案為進(jìn)一步推進(jìn)教學(xué)改革,減輕學(xué)生課業(yè)負(fù)擔(dān),提高教育教學(xué)質(zhì)量,特制定限時(shí)作業(yè)方案如下。一、限時(shí)作業(yè)的實(shí)施要求1.作業(yè)布置內(nèi)容:常規(guī)作業(yè)僅限于綜合能力訓(xùn)練......

        四年級(jí)品德上冊(cè)第一課限時(shí)作業(yè)

        四年級(jí)品德與社會(huì)上冊(cè)限時(shí)作業(yè) 第1課讓健康文明駐我家 班級(jí)姓名 一、評(píng)一評(píng): 對(duì)的打(√),錯(cuò)的打(×)。 1.家庭幸福就是過(guò)上富裕的物質(zhì)生活。() 2.文明家庭只需要擁有文明的家風(fēng)、良......

        三年級(jí)社會(huì)上冊(cè)限時(shí)作業(yè)5篇

        1課、謝謝您,爸爸媽媽 一、填空 1、我們的成長(zhǎng),離不開(kāi)爸爸媽媽的 ,離不開(kāi)爺爺奶奶的 。 2、媽媽的愛(ài)是溫暖的 ,爸爸的愛(ài)是諄諄的 ,奶奶的愛(ài)是幸福的 ,爺爺?shù)膼?ài)是滿意的 。 3、母親......

        人教版五年級(jí)下冊(cè)《草船借箭》限時(shí)作業(yè)

        《草船借箭》 限時(shí)作業(yè): 一、看拼音寫(xiě)詞語(yǔ) dùjìléigǔnàhǎndūdūtuī què()()()()()zí yǒu miào yònɡshén jī miào suàn ()() 二、按課文內(nèi)容填空 課文是按照事情發(fā)展順序......

        四年級(jí)品德上冊(cè)第二課限時(shí)作業(yè)(精選5篇)

        四年級(jí)品德與社會(huì)上冊(cè)限時(shí)作業(yè) 第2課讓健康文明駐我家 班級(jí)姓名一、評(píng)一評(píng): 對(duì)的打(√),錯(cuò)的打(×)。 1.?huà)寢尳?jīng)常因?yàn)槲业膶W(xué)習(xí)批評(píng)我,煩死啦! 2.學(xué)會(huì)理解、關(guān)心家人,是與家人溝通、親密......

        限時(shí)負(fù)責(zé)制

        姓名:李希武單位及職務(wù):市工商局黨組書(shū)記、局長(zhǎng) 主管或分管工作:負(fù)責(zé)市局全面工作,主管人事科、法制科 履職承諾: 一是圍繞發(fā)揮工商職能作用,不斷在服務(wù)全市經(jīng)濟(jì)發(fā)展上下功夫。全......

        課前預(yù)習(xí)課中改進(jìn)限時(shí)作業(yè)總結(jié)(共5篇)

        葛石鎮(zhèn)皋山完小 課前預(yù)習(xí)、課中改進(jìn)、限時(shí)作業(yè)總結(jié)材料 課堂是實(shí)施素質(zhì)教育的主陣地,是教學(xué)改革的關(guān)鍵。為認(rèn)真落實(shí)教育局關(guān)于“改進(jìn)課堂教學(xué),提高教學(xué)質(zhì)量”,我們以抓好“課前......

        高二政治上學(xué)期第一次限時(shí)作業(yè)習(xí)題(無(wú)解答)(匯編)

        泰州二中2016-2017學(xué)年度第一學(xué)期第一次限時(shí)作業(yè) 高 二 政 治 一、單項(xiàng)選擇題:本大題共33小題,每小題2分.共66分。在每題給出的四個(gè)選項(xiàng)中.只有一個(gè)選項(xiàng)是最符合題意的。 1.......