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已知点F是双曲线﹣=1(a>0,b>0)的左焦点,点E是该双曲线的右顶点,过F且垂直于x轴的直线与双曲线交于A、B两点,若△ABE是钝角三角形,则该双曲线的离心率e的取值范围是( )
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已知双曲线-=1a>0b>0的左右焦点分别为F.1-c0F.2c0.若双曲线上存在点P.使=则该双曲
已知点F.是双曲线-=1a>0b>0的左焦点点E.是该双曲线的右顶点过点F.且垂直于x轴的直线与双曲
,
两点,若△ABE是锐角三角形,则该双曲线的离心率e的取值范围是( ). A.(1,2)B.(
,2)
(
,2)
(2,3)
已知双曲线a>0b>0的左右顶点分别为AB点F为双曲线C的左焦点过点F作垂直于x轴的直线分别在第二第
已知F1F2分别是双曲线-=1a>0b>0的左右焦点P为双曲线右支上的任意一点.若=8a则双曲线的离
已知F.1F.2分别是双曲线-=1a>0b>0的左右焦点P.为双曲线右支上的任意一点.若则双曲线的离
已知点F.是双曲线-=1a>0b>0的左焦点点E.是该双曲线的右顶点过点F.且垂直于x轴的直线与双曲
B.两点,△ABE是锐角三角形,则该双曲线的离心率e的取值范围是( ) A.(1,+∞)
(1,2)
(1,1+
)
(2,1+
)
已知F.是双曲线a>0b>0的左焦点E.是该双曲线的右顶点过点F.且垂直于x轴的直线与双曲线交于
B.两点,点
在以
为直径的圆内,则该双曲线的离心率e的取值范围为( ) A.(1,+∞)
(1,2)
(1,1+
)
已知双曲线-=1a>0b>0的左右焦点分别为F.1F.2点P.在双曲线的右支上且|PF1|=4|PF
已知双曲线-=1a>0b>0的左右两个焦点分别为F1F2P.是其左支上的一点点P.到左准线的距离为d
已知双曲线的左右焦点分别为若双曲线上存在一点使则该双曲线的离心率的取值范围是.
已知中心在原点的双曲线C.的右焦点为20左顶点为.1求双曲线C.的方程2若直线y=kx+mk≠0m≠
已知F.是双曲线-=1的左焦点A14P是双曲线右支上的动点则|PF|+|PA|的最小值为.
已知点F.是双曲线-=1a>0b>0的左焦点点E.是该双曲线的右顶点过点F.且垂直于x轴的直线与双曲
,
两点,若△ABE是锐角三角形,则该双曲线的离心率e的取值范围是( ) A.(1,2)B.(
,2)
(
,2)
(2,3)
已知双曲线中心在坐标原点且一个焦点为F1-0点P.位于该双曲线上线段PF1的中点坐标为02则该双曲线
-y
2
=1
x
2
-=1
-=1
-=1
已知双曲线C.a>0b>0的左右焦点分别为F1F2点M.与双曲线C.的焦点不重合点M.关于F1F2的
,
,线段MN的中点在双曲线的右支上,若|AN|﹣|BN|=12,则a= A.3B.4
5
6
已知双曲线-=1b∈N*的左右两个焦点为F.1F.2P是双曲线上的一点且满足|PF1||PF2|=|
已知是双曲线的左右焦点若点关于直线的对称点也在双曲线上则该双曲线的离心率为___.
已知F.1F.2是双曲线-=1a>b>0的左右焦点P.为双曲线左支上一点若的最小值为8a则该双曲线的
(1,3)
(1,2)
(1,3]
(1,2]
已知双曲线C.a>0b>0的左右焦点分别为F1F2点M.与双曲线C.的焦点不重合点M.关于F1F2的
,
,线段MN的中点在双曲线的右支上,若|AN|﹣|BN|=12,则a= A.3B.4
5
6
已知F.是双曲线a>0b>0的左焦点E.是该双曲线的右顶点过点F.且垂直于x轴的直线与双曲线交于
B.两点,若
为钝角,则该双曲线的离心率e的取值范围为( ) A.(1,+∞)
(1,2)
(1,1+
)
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WhenEdisonwassevenEdison'sfamilymovedfromOhiotoMichiganafterhisfathergotajobthere.Becauseofhearingproblemshehaddifficulty1followthelessonsandoftenranawayfromschool.Howeverhe2usethetimetoreadbooksandsetupalaboratoryinhishome.Butthesmellfromhislaboratorywasoftensostrong3hismotherhadtostophimfrom4carryoutanymoreexperimentsathome. Attheageof16EdisongotajobontheGrandTrunkRailway.Therehemadeuseofausedcar5hislaboratory.Duringthattimehe6successdevelopedsomethingthatcouldsendmessages.By1869Edison'sinventionsintelegraphywerewidelyaccepted7madehimdecidetoleavethejobandbecomeafulltime8invent.Edison'smostwellknowninventionsincludedtheelectriclightbulbmicrophonesandsoon. Edisondiedat9ageof84onOctober181931.AtthetimeofhisdeathhewasstilldoingexperimentsinhislaboratoryinWestOrangeNewJersey.Heclearlyenjoyedhisworkandlivedlifetothe10full.
阅读下面短文根据所给情节进行续写使之构成一个完整的故事.OncewhenIwasateenagermyfatherandIwerestandinginlinetobuyticketsforthecircus.Finallytherewasonlyonefamilybetweenusandtheticketcounter.Thisfamilymadeabigimpressiononme.Therewereeightchildrenallprobablyundertheageoftwelve.Youcouldtelltheydidn'thavealotofmoney.Theirclotheswerenotexpensivebuttheywereclean.Thechildrenwerewell﹣behavedallofthemstandinginlinetwo﹣by﹣twobehindtheirparentsholdinghands.Theywereexcitedlytalkingabouttheclownselephantsandotheractstheywouldseethatnightwiththeirbrothersorsistersinalowvoice.Onecouldsensetheyhadneverbeentothecircusbefore.Itpromisedtobeahighlightoftheiryounglives.Thefatherandmotherwereattheheadofthelinestandingproudastheycouldbe.Themotherwasholdingherhusband'shandlookingupathimasiftosay'Youaremyknightinshiningarmor.'Hewassmilingandrespondinginpridelookingbackatherasiftosay'Yougotthatright'.Theticketladyaskedthefatherhowmanyticketshewanted.Heproudlyresponded'Pleaseletmebuyeightchildren'sticketsandtwoadultticketssoIcantakemyfamilytothecircus.'Theticketladygavetheprice.Theman'swifeletgoofhishandloweredherheadandherlipsbegantoshake.Thefatherleanedalittlecloserandasked'Howmuchdidyousay?'Theticketladytoldhimthepriceagain.Themanobviouslydidn'thaveenoughmoney.Howwashesupposedtoturnandtellhiseightchildrenthathedidn'thaveenoughmoneytotakethemtothecircus?ActuallywewerenotwealthyinonesensesoIunderstoodhowthekidswouldfeel.Ifeltsorryforthem.注意1.所续写短文的词数应为150左右2.至少使用5个短文中标有下划线的关键词语3.续写部分分为两段每段的开头语已为你写好4.续写完成后请用下划线标出你所使用的关键词语.Paragraph1Seeingwhatwasgoingonmydadseemedtohaveanidea.Paragraph2ThenmyfatherandIwentbackhome.
PrepareYourselfforaBetterTOEFLScore TheTOEFListhemostwidelyusedlameassessmentexamforAmericancollegesoruniversities.ManyforeignstudentsworryabouttakingtheTOEFLbecauseitisessentialtomeettheirgoals.1Butalowtestscorewilllimittheirchoicesforfinancialaidandadmissiontotopschools.SohowtoprepareyourselfforabetterTOEFLscore? Whatwillyoufocuson? PlanwhenyouwilltaketheTOEFL.Ifpossibleregistertotakethetestevenifthedateisseveralmonthsfromnow.Thiswillgiveyouagoodreasontostudy.Takeasampletestonlineorfromatestpreparationbooktofindoutwhereyouneedtoimprovethemost.2Thiswillhelpyoutoplanyourstudiestodeveloptheskillsyouneedtogetabetterscore. 3 TheEducationalTestingServicewebsitehasafreeonlinecoursetohelpyoupreparefortheTOEFL.Therearealsosamplepreparationquestions.ApartfromansweringthosequestionstrytosurroundyourselfwithEnglish.ListentostoriesonVOA'sLearningEnglishwebsite.WatchmovieswhereEnglishisspoken.ReadEnglish﹣languagenewspaperstokeepupwithnewwordsthatrelatetocurrenteventsandtechnology. Whenwillyoustudy? 4Butifyourpracticetestscoreismorethan20pointsbelowyourgoalyoumayneedtoimproveyouroverallEnglishabilityandthatmaytakeyears.Togetagoodscoreyouneedtosetasidetimetostudysetgoalsandmeasureyourprogress. TherealgoalofthetestistomeasurehowwellastudentcancommunicateinanEnglish﹣speakingclassroom.5 A.Howwillyoustudy? B.Donotdependoninformaladviceortricks. C.Goodmarksonthetestwillopenmanydoors. D.Doyoudowellinreadingbutnotsowellinlistening? E.Exportssaythatyoushouldstudyforatleasttwomonthsbeforetakingthetest. F.ExposeyourselftoEnglishonadailybasisandimprovementissuretofollow G.ATOEFLscoremaybenecessarytogetastudentvisatoanEnglish﹣speakingcountry.
At23mycareergotgoing.Iwasmidwaythroughamaster'sdegreeatTheLondonSchoolofEconomicsandPoliticalScienceandhadbeenhiredasapart﹣timereporterforafinancewebsite.Igotagreatone﹣monthreviewandmybossaskedifIwasinterestedinstayingwiththecompanyaftergraduation. Howeverbalancinggraduatestudieswithworkwaschallenging.TodealwithitIcheckedmyrealselfatmyofficedoor.IcameintoworkgreetedmycolleaguesandlistenedmorethanIcontributedineachmorningmeeting.ThesmallteamIworkedwithoftenseemedbusysoratherthangivingideasthatmightgetturneddownIstayedback. Afterfourmonthsmybosscalledmeintohisoffice.ThemeetingwasgoingwelluntilhetoldmethatdespitethegreatworkIhadproducedtheteamhadheldameetinganddecidedWedon'tthinkit'stherightfit. Imusthavelookedconfused.You'reambitiousintelligentandwillbeverysuccessfulmybosssaid.Butyouhaven'tmadeenoughofanefforttojointheteam.Youlosttheenthusiasmyoushowedinyourinterview.Thatwon'tworklongterm.Icouldn'tbelievethatperformingwellatmyjobwasn'tenoughtokeepit.ButIknewmybosswasright. Don'tleavebeforeyouleave.Becauseweworksohardforsuccesswedon'tliketothinkthatwehurtourselvessometimes.Buteachofusmustchangewhennecessary.IntryingtoearnafulltimejobIleanedbackinordernottoshowtoomuchofmyselformylackofexpertise.Ilearnedthehardwayisn'tthewaytoachieveyourgoals. 1Whydidtheauthorwritethisarticle? A.Toamusethereaders. B.Tointroduceherwisdom. C.Toshareherworkexperience. D.Tolandafull﹣timejob. 2WhatdidtheauthormeanbysayingIstayedbackinParagraph2? A.Shewasnolongerinterestedinthepart﹣timejob. B.Shewasafraidtogiveherownideasinherteam. C.Shewasactiveinexpressingherselfinherteam. D.Shehadnoideastocontributeinherteam. 3Whydidherbosscallherintohisofficeonedayfourmonthslater? A.Shedidn'tproducethegreatwork. B.Shecaredlittleaboutothermembersinherteam. C.Shewasconcernedonlyaboutherownsuccess. D.Shedidn'tshowenoughenthusiasminteamwork. 4Whatconclusionmighttheauthordrawfromherworkexperience? A.Notsharingenoughduringmeetingscouldleadtobeingfiredfromyourjob. B.Listeningismoreimportantthancontributingineachmorningmeeting. C.Gettingalongwellwiththeotherteammemberscouldhelpyoukeeptoyourjob. D.Youmustworksohardforyoursuccessthatyoudon'twanttohurtyourself.
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阅读下面短文根据所给情节进行续写使之构成一个完整的故事.Iwasdoingabigclean﹣uprecentlyandmykidswerehelpingwhenmysonFreddocameacrossaknottedhandkerchiefwithanolddarkbrowncoininside.'MumcanIhavethis?CanIplaywiththiscoin'heasked.Itookonelookandwasimmediatelytransportedtoanothertime.In1991therewasatimewhenmyfriendandIworkedinabackwardAfricancountryNigerhitbysandstormsandburningheat.ThereweremanythingsIfounddifficultaboutthisplace﹣﹣theclimateandbeggarsweremybiggestheadaches.SoafterfinishingfivemonthsofnursingworktherewemovedontoworkatahealthclinicinneighbouringcountryBurkinaFaso.'It'smuchgreenerinBurkina.EventheCoketastesbetter'thelocalsassuredus.Yetthefactwasquitetheopposite.ArrivingbytaxiatourdestinationinBurkinawebegantounload.Iwasreachingformylargerpieceofluggagewhenoutofthedarknessamotorbikewithtwomenapproachedslowly.Withoutwarningoneofthemengrabbedmydaypackasthemotorbikesweptcloseby.Withinsecondsthepairwereoutofsightswallowedupbythenight.Withmypassportmoneytraveller'schequesallinthebagIwasindeeptrouble.Howfrustrating!AllIwantedwastoleavethishellhole!ThenwalkingthroughBurkina'sstreetsonedayIwasstoppedbyanoldwomanwhothrustherhandinmyface.'Cadeau'gift'inFrench!Cadeau!'shecried.I'dhadenough!Iwasextremelytiredofthecountryitspovertyitsthievestheheatthedustandeverything!ItoldherangrilyandfirmlyinFrench'Ihaveno'Cadeau'.Ihavenomoney.AthiefstoleallmymoneytwoweeksagoandnowIcan'tgetoutofyourcountry.Icannotgiveyouanything.NOTHING!'Thebeggarwomanlistenedattentively.Tomygreatsurpriseafterhearingmywordsshegaveabroadsmile.注意1.所续写的短文的词数应为150词左右2.应使用5个以上短文中标有下划线的关键词语3.续写部分分为两段每段的开头语已为你写好4.续写完成后请用下划线标出你所使用的关键词语.Shereachedintothepocketofherdress.TherewasaslighttouchonmyhandlookingdownIsawmysonlookingatmecurious.
阅读下面短文根据其内容写一篇60词左右的内容概要.ScientistsinLondonsaytheyhavefoundthebestdietforbothhumansandtheplanet.Iftheworldfollowedtheso﹣called'planetaryhealth'dietthescientiststoldReutersthateachyearmorethan11millionearlydeathscouldbeprevented.Scientistssaythatthewayweproduceandeatfoodisverybadfortheplanet.Forthehealthoftheplanettheyclaimthesamedietwouldreducegreenhousegasesandsavemorelandwaterandanimals.TimLangaprofessoratBritain'sUniversityofLondonco﹣ledtheresearch.HetoldReuters'Thefoodweeatandhowweproduceitdeterminesthehealthofpeopleandtheplanetandwearecurrentlygettingthisseriouslywrong.'Langaddedthattheworld'spopulationisexpectedtogrowto10billionpeopleby2050.Ifwewanttofeedeveryoneheexplainedweallneedtochangewhatweeatandthewayweeatby'improvingfoodproductionandreducingfoodwaste.'Wellwhatdoyoueatontheplanetaryhealthdiet?Thescientistswhocreatedthisdietsayitislargelyplant﹣basedbutstillhassmallamountsofdairyfishandmeat.Thedietcallsforcuttingredmeatandsugarby50percentanddoublingtheamountofnutsfruitsvegetablesandlegumes.Foodsituationsaroundtheworldarenotequal.Incertainareasthiswouldmeangreatchanges.PeopleinNorthAmericaforexampleeat6.5timestherecommendedamountofredmeat.OntheotherhandpeopleinSouthAsiaeatonlyhalftheamountsuggestedbythenewplanetaryhealthdiet.Meetingthetargetsforvegetableswouldneedbigchangesinotherareas.Insub﹣SaharanAfricapeopleonaverageeat7.5timesthesuggestedamountofvegetableslikepotatoesandcassava.Thescientistsadmittheirgoalwillbedifficulttoachieve.Butforthemdoingnothingisalsonotanoption.Willetsaid'Ifwecan'tquitemakeitit'sbettertotryandgetascloseaswecan.
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阅读下面短文根据其内容写一篇60词左右的内容概要.You'resittingonthetrainhomeandthepersonoppositeyouyawns打哈欠.Suddenlyyou'reyawningwithhimthoughyou'renottired.Thisphenomenonconfusedscientistsforyearsuntilarecentstudyfoundthatpeopletendtosympathize同情withfellowhumans.Supportingthisclaimwasthediscoverythatthosechildrenwhowereunabletoformnormalemotionaltieswithothersdidnotexperiencecontagious有传染性的yawningwhichshowedthathumanscommunicateregularlywithoutwords.HugoD.Critchleyaneuroscientisthasconductedanexperimentrecentlywhichwillprovethathappinessandsadnesscanspreadlikethecommoncold.AccordingtoCritchleyourmindandbodyareinconstantexchangeabouthowwe'refeeling.'Emotionsarecloselylinkedwithstatesofinternal体内的responses'heexplained.'Therearealsomorevisiblechangesinourgesturesandfacialexpressions.Whenwe'reinagroupthesesignalscanspreadtoanotherperson.Forexamplethere'stheobvioustendencytosmilewhensmiledatandtherearelessobviouschangesthatreflectemotionsofsurpriseangerorsadnesssuchasachangeinourheartrateandbloodpressure.'HugoD.Critchleyfurtherexplained'Ourbodiessynchronize同步andwhenweliketheotherpersonweevercopyhisbehaviour.Nexttimeyouchatwithafriendtakenoteofhowyou'resitting﹣it'sprettylikelythatyouwillbethesame.Scientistsbelieveit'sourwayoftellingeachotherthatwe'repartners.Throughbodylanguagehumansgiveeachotherverysubtlebutclearsignalsthatshowemotions.'Sowhatlessonscanwelearnfromthis?'Spendtimewithhappypeople﹣otherwiseyourhealthcouldsuffer'saidCritchley.'Whenwe'resadourbodygoesintofightorflightmode.Butwhenwe'rehappyourbodyworksnormallyandwefeelrelaxedandpositive.Sowelookbrightourskinglowswefeelhealthyanditaffectseveryonearoundus.'
Reutersreportedthatthescientist'seffortsgotrewardedwhenthetwinchickenswereclonedinthelabafteryearsofexperiments.Thisbreakthrough1possibleenabledpeopletobringtheiradoredpetsbacktolife.2itbotheredhimfromtimetotimethattheirhealthwasinpoorconditionbecausetheywere3abletoresistillnesses.Thisdrawback4casthimdown.Merelytwoweekslatertheclonesandtheircarrierdied5struckfrustrationintohisheart.Heretiredbeforeheattainedhisambitionandbecameamemberofanoperachorustorelievehisdepression. Shortlyafterwardsthemediapublishedaconservative6argueobjectingtocloningowingtomoralproblemsandsuggestedcommercialprofitsfromcloning7forbid. When8interviewthescientiststaredatthedecorationsontheceilingthinkingforawhileandthensaidI'mnotinfavour9anyarbitraryassumptionbut10undertakecloningdoesdifferfromthestraightforwardprocedureofmakingloafsoutofflour.Untilweaccumulateenoughexactknowledgeanypracticeisinvainandisboundtofail.
阅读下面短文根据所给情节进行续写使之构成一个完整的故事. RobertandHenryweretwofriendsinthesameclass.Theyalwaysplayedtogetherandwenthometogether.OnedayRobertandHenryweregoinghomefromschoolwhenonturningacornerRobertcriedoutAfight!Let'sgoandsee! NosaidHenry.Letusgoquietlyhomeandnotmeddlewith插手thisquarrel.Wehavenothingtodowithitandmaygetintomischieftrouble.AlsoourparentsareexpectingtohavedinnerwithustogetherathomeandIdon'twantthemtoworryaboutme. YouareacowardandafraidtogosaidRobertandoffheran.Henrywentstraighthomeandintheafternoonwenttoschoolasusual. ButRoberthadtoldalltheboysthatHenrywasacowardandtheylaughedathimagreatdeal.FromthenontheylookeddownuponHenryanddidn'twanttoplaywithhimtogether. Henrywassadbuthewasn'tangrywithRobertforhisrudebehaviorbecausehelearnedthattruecourageisshownmostinbearingmisunderstandingwhenitwasnotdeservedandthatheoughttobeafraidofnothingbutdoingwrong.Thushejustignoredtheotherboys'laughterandcontinuedtogotoschoolandstudyaswell.HoweverRobertdidn'tinviteHenrytogohomewithhimanymore.InsteadhehadsomeotherboyswhoalsothoughtHenrywasacoward.Everydayafterschooltheydidn'tgohomedirectlybutwenttotheriverorsomewheretoplaygamesandhadalotoffun. AfewdayslaterRobertwasbathingwithhisnewfriendsinariverandgotoutofhisdepth.Hestruggledandscreamedforhelpbutallinvain.TheboyswhohadcalledHenryacowardgotoutofthewaterasfastastheycouldbuttheydidnoteventrytohelphim. 注意: 1.所续写短文的词数应为150左右; 2.应使用5个以上短文中标有下划线的关键词语; 3.续写部分分为两段每段的开头语已为你写好; 4.续写完成后请用下划线标出你所使用的关键词语. Paragraph1: Robertwasfastsinking. Paragraph2: ThusRobert'slifewassaved.
SoonafterIgotofftheship1fillwithtradesmenfromsmallboatsIwasstoppedbyamansellingdiamondrings.Ireallyspentsometime2getridofhim.Thenanotherman3approachmewithsomeexpensivewatchesandpens4arousedmyinterest. CanIhavealookatthepens?Iaskedthemanwhoimmediatelyhanded5tomeandsaidit'sapenofhighqualitysir.It's6£50butyoucanhaveitfor£30asaspecialfavor.YetIstillthoughtitwastooexpensivesobetweenustherewasan7argueabouttheprice.FinallyIgotthepenfor£5.Whatabargain!Onlyonetenthoftheoriginalprice!Iwaswild8joywithoutnoticingthesellerdisappearintothecrowdquickly.ThenIwentbacktotheship9extremepleased.ButthisstorydidnothaveahappyendingIcouldn'tfillthepenwithinkanditjustdidn'twork!Evenfivepounds10betoomuch!TherewasnodoubtthatIhadbeenfooledbytheseller.Nowonderhehadbeeninsuchahurrytogetaway!
A.Getinvolvedinstudentactivities B.Yourvoiceisactuallysuperimportant C.Thereisasignificantincreaseofopportunities D.Stayinactivecommunicationwithyourfriends E.Getsmartaboutthepeoplewhoyouspendyourtimewith F.Yourmajordoesnotmatterasmuchinyourfirstyearofcollege FiveThingsNobodyToldMeaboutCollege AsItypethisIaminmyuniversitydormroom.AyearagowhenIwasawaitingtoheartheresultsofmycollegeapplicationsIoftenwenttowebsitesforsometypeofinsiderlookonwhatcollegewouldbelike.Howeverthere'sonlysomuchthatprepbookswebsitesandolderfriendscanteach.Herearethetop5thingsnobodytoldmeaboutcollege 1 Nobodyenteringauniversityknowsexactlywhattheywanttostudy.Iftheytellyouotherwisethey'relyingandwillprobablychangewhattheywanttopursuewithinthefirstquarterofattendance.DuringmyfirstquarteratUniversityofCaliforniaRiversideUCRIthoughtthatIwantedtostudyPoliticalSciencewithitsfocusonInternationalAffairssothat'swhatIappliedfor.HoweveronceIworkedwithstatewideandlocalgovernmentIrealizedthatabetterfitformewouldbePublicPolicyandnowIamintheprocessofchangingmyarea. 2 Incollegetherearesomanygoodchancesforyoutomeetyourexpectations.Howeverthereisaveryimportantdifferencebetweenwantingtodosomethingandapplyingforsomething.Inorderforyoutotakefulladvantageoftheconferencesresearchinternships实习andfellowshipsthatyouruniversityoffersapply!Stepintoyouracademicadvisor'sofficeintroduceyourselfandbeginmakingthevaluableconnectionsthatarenecessarytohelpduringtherestofyourcollegecareer.Greatthingshappenwhenyoustepoutofyourcomfortzoneandyouwouldbesurprisedonhowmanychancesexistifyoujustask. 3 Collegeiswhereyoumeetyourbridesmaidsgroomsmenneighborsandpotentialbosses.Therelationshipsyoudevelopnowwillprobablybelinkedtotheonesyouvaluelatersobewiseaboutthepeoplewhoyouinvestyourselfin.Youareonlyonepersonandyoudonothavetimetowasteonpeoplewhowouldrathercausedramaormessupwithyourpurpose.Surroundyourselfwithupliftingindividualswhochallengeyoutobebetterwhilelovingyouforwhoyouareandbepatienttothepeoplewhoarethecompleteoppositeofthatdescription. 4 Asafirst﹣yearIwasafraidtomakeanynoisetowardscampusissuesthatInoticed.ItwasnotuntilIbecameinvolvedinstudentgovernmentthatIgainedtheconfidencetohandleprojectsthatIcreatedwiththehelpofASUCROfficeofthePresident.DuringmyfirstquarterIspokedirectlytotheChancellor校长askinghimforsupporttowardsmyinitiatives提议metwiththeViceChancellorsandcooperatedwithmyteachingassistantstobeginmyundergraduateresearchprotect.Nothinggoodwillhappenwhenyouaresilent. 5 Atmyhighschooltherewereaboutonlyfouractiveclubandorganizationsthatstudentscouldbeapartof.ImaginemysurprisewhenIsteppedfootontoUCR'scampuswhereover400organizationsexistrangingfrompoliticalorganizationstokarateclub.Youarenotpayingallofyourtuition学费tomerelygotoclassstudypasstestsandgraduate.Makesomethingworthyoutofyourexperience.Createstoriesthatyouwillwanttotellyourgrandchildrenoneday.Itallbeginsherebysigninguptojoinanorganization.
阅读下面短文根据所给情节进行续写使之构成一个完整的故事.WhenIwastenyearsoldIlivedwithmyfamilyinasmallhouseinruralSouthJersey.IoftenaccompaniedmymothertotheA&Ptobuygroceries.WithoutacarwewalkedandIwouldhelphercarrythebags.Mymotherhadtoshopeverycarefullyasshewasawaitressandhersalarybarelysustained勉强维持us.OnedaywhileshewasweighingpricesapromotionaldisplayfortheWorldBookEncyclopediacaughtmyeye.Thevolumeswerebeautifullycream﹣colored.VolumeIwasninety﹣ninecentswithaten﹣dollarpurchase.AllIcouldthinkofwhileshoppingwasthebook.Istoodattheregister收银台withmymotherholdingmybreathasthecashierranguptheitems.Itcametooverelevendollars.Mymotherproducedafivesomesinglesandahandfulofchange.AsshewascountingoutthemoneyIsomehowfoundthecouragetoaskfortheencyclopedia百科全书.'Couldwegetone?'Isaidshowingherthedisplay.'It'sonlyninety﹣ninecents.'Ididnotunderstandmymother'sincreasinganxietyshedidnothaveenoughchangeandhadtosacrificealargecanofpeastopaytheamount.'NotnowPatricia'shesaidsternly.Todayisnotagoodday.'Ipackedthegroceriesandfollowedherhomeupset.ThenextSaturdaymymothergavemeadollarandsentmetotheA&Palone.Twoquartsofmilkandaloafofbread﹣﹣﹣that'swhatadollarin1957.IwentstraighttotheWorldBookdisplay.TherewasonlyonefirstvolumeleftwhichIplacedinmycart购物车.Ididn'tneedacartbuttookonesoIcouldreadasIwentupanddowntheaisles.AlotoftimewentbyandIknewIhadtoleavebutIcouldn'tbeartopartwiththebook.WithnodetectiveinsightIimpulsively冲动地putitinsidemyshirtandzippedupmyjacket.IwasatallskinnykidandIamcertaintheshapeofthebookwasobvious.Paragraph1MyheartbeatingrapidlyIheadedfortheregister.Paragraph2Backhome.ItoldmymotherwhatIhadpromisedthedetective.
Forsomepeoplewalkingorrunningoutdoorsisaeatwaytoworkout.Whatmaynotbesopleasantisseeingtrashallovertheground.Wellsomepeoplearedoingsomethingaboutit.Theyareplogging! PloggingbeganinSweden.ThenamecombinetheSwedishwordplockawhichmeanstopickupandthewordjoggingwhichmeanstorunslowly.ASwedishmannamedErikstartedthemovementin2016.OntheWorldEnvironmentDaywebsiteEriksaysthathemovedtoStockholmfromasmallcommunityinnorthernSweden.Eachdayhewouldridehisbiketowork.Concernedabouttheamountoftrashandlitterhesaweachdayonhiswaytoworkhetookmattersintohisownhands. PloggingbythattermmayhaveofficiallybeguninSweden.Butmanypeoplewhoexerciseoutdoorshavebeendoingthisforyears.TakeJeffHorowitzforexample.HeisapersonaltrainerinWashingtonD.C.Heoftenpicksuptrashwhilerunningoutside.Heevenasturneditintoagamehewilltrytopickupthetrashwithoutstopping.Ididn'tknowitwasathingreally.Thisisjustmypersonalethics道德标准whereIgoforarunandifIhappentoseeapieceofgarbagelyingaroundandit'swithinreach﹣﹣﹣itisakindofalittletestformetoseeifIcangrabitandthrowitinanearrashcanwithoutstopping.AndthatwayIthinkitgivesmealittleexerciseandalittlefocusformyrun.Andithelpscleanuptheneighborhoodheannounced. Todayloggingisanofficialactivityonethatisbecomingincreasinglypopular.Citiesaroundtheworldnowholdloggingevents.Iwouldjusthopepeoplewouldthinktwicebeforedroppingagarbageontheround.Wehavecontainers…seemsoneveryblock.Soit'seasytoputyourgarbageinthetrashcans.Ijustthinkpeopleshouldthinkaboutitalittlebitmore.Idohopeonedaytherewillnotbeaneedforlogging.saidaninterviewee. 1Whichofthefollowingcanreplacetheunderlinedphrasetookmattersintohisownhands? A.calledonpeopletojoinhim B.appealedtopeopletogogreen. C.begantopickupthetrash. D.hadthecollectedtrashrecycled. 2LikeJeffHorowitzloggingtomanypeoplehasbecomeaanact. A.automatic. B.irresistible. C.arbitrary D.temporary 3WhatistheideathatLoggingeventsaremeanttopromote? A.loggingistrulybeneficial B.Trashcansshouldbewithinreach C.Litteringisnotacceptable. D.Communitiesshouldbekeptclean. 4Whatcanbeasuitabletitleforthepassage? A.NewExerciseEnjoysunbelievablepopularity B.NewExerciseTrendAlsoHelpsEnvironment C.Plogging﹣aFashionableWaytoclearwaste D.Plogging﹣anExerciseOriginatinginSweden
培养胡萝卜根组织可获得试管苗获得试管苗的过程如图所示. 回答下列问题. 1利用胡萝卜根段进行组织培养可以形成试管苗.用分化的植物细胞可以培养成完整的植株这是因为植物细胞具有. 2步骤③切取的组织块中要带有形成层原因是. 3从步骤⑤到步骤⑥需要更换新的培养基其原因是.在新的培养基上愈伤组织通过细胞的过程最终可形成试管苗. 4步骤⑥要进行照光培养其作用是. 5经组织培养得到的植株一般可保持原品种的这种繁殖方式属于繁殖.
Itwasthelastdayofcampandwewereengagedinatraditionpasseddownforyears.We1supposetotearthesheetsoffofourbedsstuff塞入themintoourpillowsandreturnthemtotheoffice. Pillows2fillwithheavysheetsthoughwerefar3goodthanpillowsforanendoftheweekpillowfight.Wewereknockingeachotheroverthebedsandsoonthepillowfightspreadintothehallwayofthesecondfloor4ourdormitory.Severaloftheotherboyshaddecidedtogather5fightagainstus. Iswungatoneofthemandmissedandthensawanotherpillowcoiningstraightatmyhead.Howeveritcaughtmyfriendfullinthechest.Unfortunatelyhewasstandingattheedgeofthenarrowstairway6ledtothefirstfloor.Heseemedabouttoknockhisheadwideopenonthewooden7stepwhensomeoneremovingtheirsheetsonthefirstfloor8laytheirmattress床垫onthebottomofthesteps.Myfriendlandedonthemattressandrolled9safeoffofit. Thepillowfightstoppedcoldasweallgazedin10amaze.
7.5分I'dliketosharealittlestorywithyouaboutsomethingthathappenedwhenIwasfour.Irememberitclearly.Ourlovingfamilydogwasnearingtheendofhislife.Myfatherpickedhimupandputhiminalittlebedwehadmadeforhim.Ourdogmycompanionwhomwehadcaredforbitmyfatherwhenheattemptedtohelphim.Howcouldhe?Why?Icouldn'tunderstandit.Ididn'tlikehimanymore. Ihadn'tthoughtaboutthatstoryforalongtimebutsomethingthathappenedlastweekbroughtitbacktome.Iwenttospeakwithafriend.WhenIknockedonthedoorImetinaninstantanangrylookandafewharsh尖刻的words.Whenthedoorwasslammed砰地关上inmyfaceIstoodthereshockedandinarushIwasremindedofmydogbitmyfather20yearsagoorso.Whatbroughtthatstorybackwasthatsamefeelingofbetrayal. Bothstoriestaughtmesomethingthenextday.YouseewhenIgotupinthemorningandwastoldmydoghaddieditbecamecleartomethathemusthavebeeningreatpain.Forhimtohavebittenafamilymemberhecouldnothavebeenhimself.MuchthesamefortheotherstorywhenIlearnedthatmyfriend'swifehadjustlefthim. Weareallbeingsofourenvironmentsouropinionsandfeelings.Andallofthosethingscancauseyoutosayanddothingsthatcan'tbeunderstoodbythosewhoarenotinthesamesituationwithyou. Ifyoumeetsomeoneeitherbehavingoutofcharacteroractinginawaythatdoesn'tseemtofitthesituationputoutyourhandandbepatientwhenyouthinkitisleastpossibleforhimtodoso.Youmayturnaroundastorythathasasadendingsimplybyyouractions. 1WhatistheinfluenceoftheincidentmentionedinParagraph1? A.Ithurthisfather'sfeelingdeeply. B.Ithaspuzzledtheauthoreversince. C.Itleftadeepimpressionontheauthor. D.Itmadetheauthordislikedogs. 2Whydidtheauthor'sfriendsayharshwordstotheauthor? A.Hewasill﹣tempered. B.Hewassufferingthepainoflosinghiswife. C.Hewasbotheredbyanunexpectedvisit. D.Theyoncequarreledandhecouldn'tforgivetheauthor. 3What'stheauthor'sadvicetous? A.Helpthoseinneed. B.Lookbeforeyouleap. C.Respectforothersisakindofvirtue. D.Learntoputyourselfinothers'shoes.
TheSecretsoftheBestCollegeStudents Agrowingbodyofevidencesuggeststhatthemostsignificantthingaboutcollegeisnotwhereyougobutwhatyoudo.HistorianandeducatorKenBainhaswrittenabookonthissubjectwhichdrawsaroadmapforhowstudentscangetthemostoutofcollege. 1TiaFullerwholaterbecameaproductivemusicianbeganplanningherfutureincollegeimaginingthesuccessfulcompletionofhergoalsinthefuture.Iwouldkeepfocusedonthelightattheendofthetunnel''shesaidtoBain.Thatwouldhelpmedevelopaclearvisionoffuture. PursuepassionnotA's.Whenhewasincollegetherespectedastrophysicist天文物理学家NeilDTysonsaid2InhisexperienceasastudentandaprofessorsaysTysonAmbitionandcreationbeatgradeseverytime. Getcomfortablewithfailure.WhenhewasstillacollegestudentcomedianStephenColbertbeganworkingwithanimprovisational即兴的theaterinChicago.HetoldBainImprovisationisagreateducatorwhenitcomestofailing.3 Makeapersonalconnectiontoyourstudies.InhersecondyearincollegeElizaNohnowaprofessorofAsianAmericanstudiestookaclassonpowerinsociety:whohasithowit'sused.Itreallyopenedmyeyes.4NohtoldBain.Ididn'tjustlistentolecturesbutbegantousemyownexperiencesasajumpingoffpointforaskingquestions. Developsympathyforothers.ReynaGrandeawell﹣knownnoveliststartedwritingseriouslyinherjunioryearmcollege.5.ReynapointsoutAsawriterIhavetounderstandwhatmotivatesacharacterandIseeotherpeopleascharactersinthestoryofmylife.Grandesays.WhensomeonemakesmistakesIalwayslookatwhatmadethemactthewaytheydo. A.Readandthinkactively. B.Setgoalsandmakethemreal. C.There'snowayyouaregoingtogetitrighteverytime. D.Writingfictiontaughtmetosympathizewiththepeoplewhopopulatedmystories. E.IdecidedthatIwantedtodosomethingtohelppeopleandbringalittlejusticetotheworld. F.Iwasmovedbycuriosityinterestandfascinationnotbymakingthehighestscoresonatest. G.ForthefirsttimeinmylifeIrealizedthatlearningcouldbeaboutmeandmyinterestsaboutwhoIwas.
Ourmindisapowerfulthingwhichcaneitherimproveorruinourmood.Manyofushaveproblemswithnegativethoughtsplayingonthechannelofourmindsbutifyou'reengaginginitconstantlyandyoubelieveititcouldbedestroyingyoursenseofself﹣esteem.1 Whatcanyoudo?Herearesomesuggestions 1.Liveinthemoment Self﹣talkissosubtlethatweoftendon'tnoticeitseffectonourmoodandbeliefsystems.Keythingstonoticeareifonlyorwhatifstatementstheformerkeepyoustuckinthepastwithregretwhilethelatterkeepyoufearfulofthefuture.2Sostayinthepresentmoment. 2.Visualizethegoodthings Ifwewanttochangethenegativetapesplayinginourheadswehavetovisualizeourselvespositively﹣thatmeansseeingyourselfnon﹣judgmentally.Howwouldthatlook? Drawapictureinyourmindandexpandonit. 3.3 Whateveryoubelieveyou'llexperiencemoreandyou'llalsofindyourselfbehavinginwaysbelievethatareinyourbeliefs.Sostartbelievingthebestaboutyourselfactasifyoubelievethatyou'reavaluableandworthyperson. 4.Developpositivethoughts 4Whatareyourstrengths?Whatareyougoodat?Keepyourthoughtsinthehere﹣and﹣now.InsteadofsayingI'mnotgoodenoughtrysayingIamcapable.IacceptmyselfthewayIam. Thinkingpoorlyaboutourselvesgetsusnowhereandisextremelyself﹣limiting.5 A.Payattentiontothecauses B.Recognizethatactionsalwaysfollowbeliefs C.Thereisnothingyoucandoaboutthepastandthefutureisn'thereyet. D.Inshortitbringsyourfocusonyourfailuresandthatgetsyounowhere. E.Negativethoughtsaccountforbadfeelingsthathookyouintobelievingthatyou'reafailure. F.Insteadofalwaysputtingyourselfdownthinkofsomethingsyouactuallylikeaboutyourself. G.Decidetodaytoturnoffthenegativeself﹣talkchannelinyourmindanddevelopyourtruepotential.
Womenareattheirhappiestattheageoftwenty﹣eightastudyhasfound. Researchersdiscoveredwomenfeelmostconfidentandhappy1theirlovelifeandbodyshapeshortly2theyreachthirty. Theageoftwenty﹣eighthasbeenpinpointed认定asthetimeinawoman'slife3theirhairlooksthebestbodyshapeisatitspeakandconfidenceisatanall﹣timehigh. Thesurveyof25﹣65﹣year﹣olds4recordtheageatwhichwomenweremostcontentintwelvekey5areaoftheirlife. Accordingtotheresultswomenarehappiestintheircareerattwenty﹣nineandmostcontentwiththeirrelationshipsoneyearlateratthirtydespitehavingthebestsexattwenty﹣eight. Butallisnot6losefortheoverthirtiesaswomenfeelmostcontentwiththeirfinancialsituationatthirty﹣threeandateasewiththeirhomeandfamilylifeatthirty﹣two. Theresearchfoundtwothirdsofwomenfeeltheyagemore7thanmen.Italsoemerged表明that56percentofwomenworryaboutlosingtheirlooksastheygetolder. But8drinkfromthefountainofyouthdoesn'tcomecheapastheaveragewomanwillspend£600everyyearonbeautyproductsinabid9staylookingyoung. Theresearchalsofoundwomenspendoverfivedaysayearontheir10beautifulroutine﹣﹣﹣anaverageoftwenty﹣twominuteseveryday.
Happinessisnotawarmphone.TeenswhoseeyesarehabituallygluedtotheirsmartphonesareevidentlyunhappiersaidprofessorofpsychologyJeanM.Twenge. TwengealongwithcolleaguesanalyzedthedatafromanationalsurveyofmorethanamillionU.S.8th﹣10th﹣and12th﹣graders.Thesurveyaskedstudentsquestionsabouthowoftentheyspenttimeontheirphonesandcomputersaswellasquestionsabouttheirsocialinteractions互动andtheirhappiness. Onaveragetheyfoundthatteenswhospentmoretimeinfrontofscreendevices设﹣﹣playingcomputergamesusingsocialmediaandvideochatting﹣werelesshappythanthosewhospentmoretimeinnon﹣screenactivitieslikesportsreadingnewspapersandmagazinesandface﹣to﹣facesocialinteraction.Theyalsofoundthathappiestteensuseddigitalmediaalittlelessthananhourperday.Butafteradailyhourofscreentimeunhappinessrisessteadilyalongwithincreasingscreentime. ThekeytodigitalmediauseandhappinessislimiteduseTwengesuggestedAimtospendnotmorethantwohoursadayondigitalmediaandtrytoincreasetheamountoftimeyouspendseeingfriendsface﹣to﹣faceandexercising﹣twoactivitiesreliablylinkedtogreaterhappiness. Lookingathistoricaltrendsfromthesameagegroupssincethe1990stheresearchersfoundthatthepopularityofscreendevicesovertimecoincidedwithageneraldrop﹣offinreportedhappinessinU.S.teens.Youngpeople'slifesatisfactionandhappinessdeclinedafter2012.That'stheyearthatthenumberofAmericanswhoownedasmartphoneroseabove50percent.TwengenotedByfarthelargestchangeinteens'livesbetween2012and2016wastheincreaseintheamountoftimetheyspentondigitalmediaandthedeclineinin﹣personsocialactivitiesandsleep.Andthearrivalofthesmartphoneisthemostconvincingexplanationforthesuddendecreaseinteens'happiness. 1WhatisthefindingofTwenge? A.Longerscreentimemorelifesatisfaction. B.Screen﹣addictedteensareunhappy. C.Toomuchscreentimeleadstowarmphones. D.Teensaregluedtotheirsmartphones. 2WhatcouldsmartphoneusersdotogainhappinessaccordingtoTwenge? A.Limitthescreentimetoonehour. B.Spendatleasttwohoursofscreentime. C.Prohibittheuseofsmartdevicestotally. D.Decreasethetimewithfriendsandforexercise. 3Theunderlinedwordscoincidedwithinparagraph5probablymeans. A.influenced B.raised C.matched D.reduced
7.5分Peopletendtoacceptgroup'sstandardsofbehaviorandthinkinginagroupwork.Manyillustrations例证couldbegivenofthisfromeverydaylifebutwhatisofparticularinteresttopsychologistsishowmuchpeople'sjudgmentsandopinionscanbechangedasaresultofgrouppressure.Aschandothersnoticedthatpeopleinagroupwillagreetostatementsthatarecontrarytotheevidenceoftheirsenses.Itwouldbeamistaketothinkthatonlyparticularchangeablepeoplearechosentotakepartinexperimentsofthistype.Usuallyhighlyintelligentandindependentpeopleareused. Inatypicalexperimentthisiswhatmayhappen.Theexperimenterasksforvolunteerstojoinagroupwhichisinvestigatingvisualsense.Theparticipantsarenotthereforeawareoftherealpurposeoftheexperiment.Eachvolunteeristakentoaroomwherehefindsagroupofaboutsevenpeoplewhoarecooperatingwiththeexperimenter.Thegroupisshownastandardcardwhichcontainsasingleline.Theyarethenaskedtolookatasecondcard.Thishasthreelinesonit.Oneisobviouslylongerthanthelineonthefirstcardoneisshorterandonethesamelength.Theyhavetosaywhichlineonthesecondcardisthesamelengthasthelineonthestandardcard.Theothermembersofthegroupanswerfirstbuttwhatthevolunteerdoesnotknowisthattheyhavebeentoldtopickoneofthewronglines.Whenhis turncomesheisfacedwiththeconsistentopinionoftherestofthegroup﹣alltheothershavechosenlineAbuthequiteclearlyseeslineBascorrect. Whatwillhedo?AccordingtoAschmorethanhalfofthevictimschosenwillchangetheiropinion.Whatisequallysurprisingisthatwheninterviewedabouttheiranswersmostexplainedthattheyknowthegroupchoicewasincorrectbutthattheyyieldtothepressureofthegroupbecausetheythoughttheymustbesufferingfromanopticalillusion视觉假象orbecausetheywereafraidofbeingdifferent. 1Thepsychologistsareespeciallyinterestedin. A.theevidenceoftheexperiment B.thechangesintheattitudesofpeople C.thedifferenceinpeople'sbehavior D.thedegreeofchangesofpeople'sopinions 2Whymorethanhalfofthevictimschangestheiropinionsintheexperiment? A.Becausetheyhadbeentoldabouttheanswer. B.Becausethoughtthegroupchoicewascorrect. C.Becausetheysubmittedtothegrouppressure. D.Becausetheireyesweresufferingfromillusion. 3Thepurposeoftheauthorinwritingthispassageisto. A.illustratetheinfluenceofgrouppressureonindividuals B.encouragepeopletoactagainstanygroup'sopinion C.invitemorevolunteerstojoininAsch'sexperiment D.tellthereadershowtoperformpsychologicalexperiment
StartingthisSeptemberfreshmenatTsinghuaUniversitywillhavetotakeswimmingcourses.Theywon'treceivetheirdegreesuntiltheypassthetest1success.Exceptionswillbeallowedforstudentswithcertainphysicalormentalconditionsif2provebymedicalstaff. Actuallyviewingtheability3swimasamustforstudentsisnotsomethingnewtothisuniversity.Itwasa4requireintheearly20thcentury.Laterit5dropduetoarisingnumberofstudentsandalackoffacilities设施. Asfor6newruleopinionsvarygreatly.Somestudentswelcomeitsayingit'sanecessaryskill7cansaveliveswhileothersarguethatit'snotreasonabletolinkdegrees8swimmingability. InresponsetothenegativereviewsLiuBoheadoftheDivisionofSportsSciencegavethefollowingexplanation.9awatersportswimmingdoeslessharmtojoints关节andmusclesandishelpfulinimprovingstudents'endurance.10consequenceit'sbeneficialtostudentsinthelongrun.
Cassielivedalonelylife.Shewouldwanderthroughtheforesteating1fallfruitswhileotherbirdsflewamongthetrees. Whycannotyoufly?theywouldask.Yourweaklittle2wingcannotevenliftyouofftheground!theywouldteaseher.You're3shametobirdstheywouldoffendher. Cassiewasfeelingincreasinglyfrustratedand4usesoshemadeuphermindtoleavetheforestforgood.Justasshewalkedfreefromtreessheheardadeepvoice5callfrombehind.Cassieturnedaround.6wasalargetreethatsignaledtohertocomebackintotheforestWeneedyoubadlyheresaidthetree.Werelyonyou7eatourfruitsandspreadourseeds.Theotherbirdsmaythinkyouareworthlessbutyouareactually8muchusefulbirdintheforest.Pleasedon'tgoyouareirreplaceable.Cassicbeamedforthefirsttimeinmanyweeksand9returntotheforest.Thefruitshadnevertastedsogood. It'seasytocompareyourskillstotheabilitiesofothersandfeelinadequate.It'seasytolistentothenegativevoicesofothersandbelievethem.Butbear10mindthatyouareessentialyouareremarkableandyouareirreplaceable!
HowtoGetRidofStudyStress Doyoufindyourselffeelingstressedandoverwhelmedwhenstudyingforquizzestestsorfinalexams?Thisisacommonproblemamongmanyyoungpeoplewhethertheyareinjuniorhighorcollege.Howevertherearemanytricksthatcanbeusedtoavoidbeingstressedaboutstudyingforschool.1 Whetheryouaretakingacollegecourseonpsychologyoradriver'seducationclassitisimportanttopaycloseattentiontowhatyourinstructorissaying.Typicallyiftheteacherrepeatsthemselvesorwritessomethingontheboarditisimportanttounderstandandremember.2 Animportantpartofpreventingdistractionisbytakingconcise简明的clearnotesinclass.3Writedownthingsyoudonotclearlyunderstandorcannotremember.Usegraphsdiagramsandarrowstothoroughlyexplainconcepts.Thiswillhelpyouunderstandlecturesandwillreducestudystressatalatertime. Ifyoufindyourselfnotunderstandingaconceptandthetextisnotmakingitcleartoyouaskquestions.4Ifyoudonotunderstandsomethingyourstudyingwillbeconfusingandhelpyouverylittle.Iftheteachermentionssomethinginclassdonotbeafraidtoraiseyourhandandaskiftheycanexplainitfurther.Betteryettalktoyourteacherafterschooltogetsomeone﹣on﹣onetimesothatyoufeelconfidentaboutyourcomprehensionofatopic. 5Gettingadequatesleepallowsthemindtostoreconceptsandtopicssothatyoucanrememberandunderstandthem.Getenoughsleepthenightbeforeanexam.Thisshouldbenoproblemsinceyouwon'tbecramming! A.Trytomakeittoeveryclassandtakenotestokeepyourselffrombeingdistractedduringthelecture. B.Gettingaheadonreadingthematerialwillensurethatyouunderstanditoratleastsomeofit. C.Restisactuallyvastlyimportantforyourmindtoretaininformation. D.Writedownthingstheteacherrepeatsorwritesontheboard. E.Setasidethirtyminuteseveryeveningtorepeatwhatyoulearnedinclassthatday. F.Herearesomeeffectivewaystoreduceyourownstudystress. G.Youmustaskquestionsinordertohavestress﹣freestudying.
Noteveryonedealswiththeirfeelingsasanopenbookforotherstoread.1Learntoopenupinordertoimproveyourmentalhealth. 2Acceptthisandmoveon.Giveyourselfsometimetohavesweatypalmsorashakyvoicesinceitwillgetbetterwithpractice. Askpeopleopen﹣endedquestions.Tobeginpracticingopeningupyouneedtoengageinhonestopenconversation.TryaquestionlikeHowarethingsgoingatwork?insteadofHow'sitgoing?togetanopenanswer.Theninturnansweropen﹣endedquestionswithhonestanswersinsteadofFineorOK.3Howeverinmostcasespeopleareflatteredthatyouarelisteningtothemandinterestedintheirlife. Tryemulating效仿someonewhoisveryopen.Observetheminasocialsituation.Thentrytoactasifyouarethemoccasionally.Manyopenbehaviorsarelearnedandnotanaturalpartofpersonality.4 Avoidbeingaknowitall.Somepeoplethinkadviceisopeningupbutitisunlikelytohelpyoumoreopen.Whenyouwanttogiveadvicelistenandtrytolearnsomethingnewfromthesituation. 5Scheduleatleastonelongconversationperweek.Intheconversationyoutellsomeoneabouttheemotionalanddifficultpartofyourlife.Getintothepracticeofopeningupaboutwhat'sgoodandbadinyourlife. A.Inthiscasepracticecanmakeperfect. B.Callclosefriendsandfamilymembersmoreoften. C.Askingpeoplepersonalquestionsisnotalwaysproper. D.Tryconnectingabouthobbiesinterestsvacationsorbooks. E.Listeningpatientlyisagreatwaytoovercomefearofsharingemotionsinpublic. F.Understandthatthereisusuallysomefearwithopeninguptootherpeople. G.Howeverclosingyourselffromnewpeoplecanstopyourpersonalgrowth.
7.5分Itseemsthatelectronicdevicesjustkeepgettingsmaller.ScientistsintheUnitedStateshaveannouncedthecreationofthefirsttransistorwithonlytwodimensions二维. Atransistorisasmallelectronicdevicethattransfersorcarrieselectroniccurrent.Scientistshopethesenew2Dtransistorswillbeusedforbuildinghigh﹣resolution高分辨率displaysthatneedverylittleenergy. Twogroupsofscientistscreatedthese2Dtransistors.Theyreportthatthetransistorsareonlyafewatomsthick. Usuallytransistorsaremadewiththeelementsilicon硅.ComputerprocessorsmemorychipsTVscreensandotherelectronicdevicescontainbillionsofsilicon﹣basedtransistors.Buttheseverysmallelectricalpartshavecertainlimitations. DimitrisIoannouisanelectricalengineeringprofessoratGeorgeMasonUniversity.Hesaysthetraditionaltransistorhasbeenimprovedasmuchasitcanbe.Headdsthatresearchershavebeenlookingfornewmaterialswithspecialfeaturesandtheywanttransistorstobeseenthroughandsoft. Ifthelayersareverythinthetransistorcanbecomeflexiblesoitdoesn'thavetoberigid坚硬的likeitwouldbeinasiliconchip.SopeoplecanthinkofapplicationslikewearableelectronicstelevisionscreensandotherthingssaidIoannou. Thesenewtransistorscanalsocarryhighercurrent.Theyalsocanmovethecurrentmuchfasterthantraditionaltransistors.Thisisimportantforhigh﹣definitionscreens. DimitrisIoannousaysthescientificsuccesscouldproveveryusefulinthefuture.Nowhowgoodandhowusefulitwillbeit'sstillinthestageofresearchbutitcertainlyisanadvancesaidIoannou. 1WhichofthefollowingstatementsaboutthenewlycreatedtransistorisTRUE? A.Theyareexpectedtobeusedinhigh﹣resolutiondisplays. B.Thetransistorsaremadewiththeelementsilicon. C.Theyarerigidjustliketraditionaltransistors. D.Theyhavealreadybeenputintoactualuse. 2WhatdoestheunderlinedsentenceinParagraph5mean? A.Thetraditionaltransistorshavebeenchangedintotwo﹣dimensionalones. B.Manyofthetraditionaltransistorshavebeenimprovedovertheyears. C.Thetraditionaltransistorhasbeendevelopedtoitsfullest. D.Thetraditionaltransistorhasbeendevelopedquitewell. 3WhatisDimitrisIoannou'sattitudetowardsthecreationofthenewtransistors? A.Negative. B.Neutral. C.Indifferent. D.Positive.
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