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鲁班锁是中国传统的智力玩具，起源于中国古代建筑中首创的榫卯结构，它的外观是如图所示的十字立方体，其上下、左右、前后完全对称，六根等长的正四棱柱体分成三组，经90°榫卯起来．若正四棱柱的高为8，底面正...
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高三下学期数学《》真题及答案
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鲁班锁是中国传统的智力玩具起源于古代汉族建筑中首创的榫卯结构这种三维的拼插器具内部的凹凸部分即榫卯
教育史学家一般认为中国古代的大学起源于商朝的
鲁班锁是中国传统的智力玩具起源于中国古代建筑中首创的榫卯结构它的外观是如图所示的十字立方体其上下左
中国古代园林起源于殷商时期出现的
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官府藏书起源于代中国古代藏书事业的
农历七月初七是中国传统的乞巧节学习纺织工艺的节日它起源于我国古代牛郎与织女的美丽传说导致此节日形成的
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湖南大学起源于中国古代四大书院之一的哪所书院
2017年·漳州二模如图为中国传统智力玩具鲁班锁起源于古代汉族建筑中首创的榫卯结构这种三维的拼插器
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如图为中国传统智力玩具鲁班锁起源于古代汉族建筑中首创的榫卯结构这种三维的拼插器具内部的凹凸部分即榫卯
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鲁班锁是中国传统的智力玩具起源于古代汉族建筑中首创的榫卯结构这种三维的拼插器具内部的凹凸部分即榫卯结
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中国古代的避讳起源于
周朝
秦朝
春秋战国时期
汉朝
鲁班锁是中国传统的智力玩具起源于中国古代建筑中首创的榫卯结构它的外观是如图所示的十字立方体其上下左
春节是中国最隆重的传统节日它依据中国古代历法把正月作为岁首这一节日最早应起源于
先秦时期
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中国古代金银制品的使用起源于
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春秋
鲁班锁是中国传统的智力玩具起源于古代汉族建筑中首创的榫卯结构这种三维的拼插器具内部的凹凸部分即榫卯结
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鲁班锁是中国传统的智力玩具起源于中国古代建筑中首创的榫卯结构它的外观是如图所示的十字立方体其上下左
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zōng jiāo 仪式
春节是中国最隆重的传统节日它依据中国古代历法把正月作为岁首这一节日最早应起源于
秦始皇时期
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鲁班锁是中国传统的智力玩具起源于中国古代建筑中首创的榫卯结构它的外观是如图所示的十字立方体其上下左
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曹魏时期
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WheneverPrinceGeorgestepsoutforanengagementlikeontheroyaltourofCanadaorposes摆姿势forofficialphotographsthere'sonethingaboutthelittleroyalthathaslongconfusedroyalwatchers:thefactthatheonlyeverwearsshorts. AccordingtoWilliamHansonanetiquette礼仪expertthereisaverygoodreasonforthis﹣﹣﹣andithasnothingtodowithfashionbutratherroyaltradition. It'saveryEnglishthingtodressayoungboyinshortsWilliamHansonsaid.TrousersareforolderboysandmenwhereasshortsonyoungboysisoneofthosesilentBritishclassmarkersthatwehaveinEngland.Althoughtimesareslowlychangingapairoftrousersonayoungboyisconsideredquitemiddleclass﹣﹣﹣quitesuburban.Noself﹣respectingroyalwouldwanttobeconsideredsuburban.EventheDuchessofCambridge. ThetraditioncanbetracedbackthroughtheroyalfamilywithbothPrincesWilliamandHarryregularlyseenwearingshortsuntiltheywereconsideredoldenoughtoprogresstofull﹣lengthtrousers. TheusualcustomisthataboygraduatestotrousersaroundeightyearsoldWilliamadded.Thisishistoricallyperhapsduetothepracticeof‘breeching'whichdatesbacktothesixteenthcentury.Anewbornboywouldbedressedinagownfortheirfirstyearortwoandthenhewas‘breeched'andworearticlesofclothingthatmoreresembledshortsortrousersthandresses. UltimatelyheconcludedinthecaseofWilliamandKatethedecisiontodressGeorgeinshortsismorelikelydowntotraditionthanaclassissue. Themodernhabitofupperclassfamilieschoosingtodresstheirboysinshortswilldeliberatelyharkbackto使人想起abygoneagehesaid.TheBritishuppersetarealwayskeentoholdontotraditionandthisonealsosilentlymarksthemoutfrom‘therest'. 1WhydoesPrinceGeorgeonlywearshorts? A.PrinceGeorgelovesshorts. B.PrinceGeorgelovessports. C.Shortsareasignoffashion. D.Wearingshortsisaroyalpractice. 2WhichofthefollowingwordsbestdescribePrinceGeorge'swearingshorts? A.Reasonable. B.Practical. C.Traditional. D.Fashionable. 3WhydoWilliamandKatedressPrinceGeorgeinshorts? A.Theywanttoholdontotradition. B.Theywanttokeeptoroyalfashion. C.Theywanttotrainhimtokeepoutthecold. D.Theywanttoignoretheirsocialposition.
OnceImetataxidriverinhislate10s.He1anddrovemetomydestination.OnthewayIaskedhimhowhis2was.Hetoldmebrieflythatitwasjustfinebutthecostofgaswas3hurtinghisbottomline.Wethenenteredintoaspiriteddiscussionaboutthe4environment. Hetoldmethathehad5whilehuntingforanothertypeofworkbecauseofhisbackground.Iama6criminalhesaidstraightforwardly.PeoplelookatmyrecordandthenI'mtoast完蛋了he7.IknowI8butI'veturnedmylifearoundandhavebeen9forseveralyearshewentontoexplain. Itisnever10tostartanewlifeIsaidbutthemostimportantthingisthatyouarestartingandthatyouhave11. Thedriverseemed12ashelookedback.Likewhat?heasked.Youcangobackto13evenpart﹣timeifyoudon'twanttodriveataxifortherestofyourlifesoyoucan14foratradeyouareinterestedin.Ireplied. Ifeltamomentofpainforhimbecauseheisstillinatypeof15eachday.Ihavemetmanyotherpeoplelikehimovertheyears﹣theonly16isthattheyhavenevercommittedcrimes.Thesearepeoplewhoalreadyhavegoodjobsandgoodreputationsbutaretotally17withtheirlives.Thedailyprisontheygotoisonewhereworkis18whereeachdayisfullofworrywishingforsomethingbetter.Thisisaprisonofthe19. Ifthisisyourdailylifeknowthatthereisalwaysanopportunityto20yourlife.Thedecisionisyoursandyoursalone. 1A.tookmeaway B.pickedmeup C.droppedmeoff D.sentmeback 2A.health B.family C.business D.study 3A.possibly B.really C.hardly D.merely 4A.job B.office C.finance D.security 5A.motivation B.experience C.confidence D.difficulty 6A.dangerous B.professional C.former D.escaped 7A.warned B.criticized C.threatened D.complained 8A.messedup B.brokeup C.hurriedup D.wokeup 9A.hopeful B.clean C.tough D.quiet 10A.worthwhile B.useful C.possible D.easy 11A.strengths B.experiences C.choices D.friends 12A.worried B.surprised C.relieved D.satisfied 13A.school B.jail C.normal D.court 14A.care B.ask C.qualify D.account 15A.fantasy B.job C.prison D.game 16A.advantage B.limitation C.requirement D.difference 17A.dissatisfied B.patient C.unfamiliar D.delighted 18A.appreciated B.hated C.expected D.envied 19A.fortune B.fame C.hope D.mind 20A.change B.accept C.protect D.devote
Ihadbeenlivinginawhirl:studyingtheorganattheUniversityofArizonaconductingaspeechclinicintownandteachingaclassinmusicalappreciationattheDesertWillowRanchwhereIwasstaying.Iwasgoingtopartiesdanceshorsebackridesunderthestars.OnemorningIcollapsed.Myheart!Youwillhavetolieinbedforayearofcompleterestthedoctorsaid.Hedidn'tencouragemetobelieveIwouldeverbestrongagain. Inbedforayear!Tobeinvalid﹣﹣﹣perhapstodie!Iwasterror﹣stricken!Whydidallthishavetohappentome?WhathadIdonetodeserveit?Iswept.Iwasbitter.ButIdidgotobedasthedoctoradvised.AneighborofmineMr.Rudolfanartistsaidtome:Youthinknowthatspendingayearinbedwillbeatragedy.Butitwon'tbe.Youwillhavetimetothinkandgetacquaintedwithyourself.Youwillmakemorespiritualgrowthinthesenextfewmonthsthanyouhavemadeduringallyourpreviouslife. Ibecamecalmerandtriedtodevelopanewsenseofvalues.Ireadbooksofinspiration.OnedayIheardaradiocommentatorsay:Youcanexpressonlywhatisinyourownconsciousness.Ihadheardthewordslikethesemanytimesbeforebutnowtheyreacheddowninsidemeandtookroot.IdeterminedtothinkonlythethoughtsIwantedtoliveby:thoughtsofjoyhappinesshealth.IforcedmyselfeachmorningassoonasIawoketogooverallthethingsIhadtobegratefulfor.Nopain.Alovelyyoungdaughter.Myeyesight.Myhearing.Lovelymusicontheradio.Timetoread.Goodfood.Goodfriends.Iwassocheerfulandhadsomanyvisitorsthatthedoctorputupasignsayingthatonlyonevisitoratatimewouldbeallowedinmycabin﹣﹣﹣andonlyatcertainhours. NineyearshavepassedsincethenandInowleadafullactivelife.IamdeeplygratefulnowforthatyearIspentinbed.ItwasthemostvaluableandthehappiestyearIspentinArizona.ThehabitIformedthenofcountingmyblessingseachmorningstillremainswithme.Itisoneofmymostpreciouspossessions. 1Thewriterhadtolieinbedforayearbecause. A.shewasterror﹣strickenatthattime B.shehadaseriousheart﹣attack C.shewaswornoutbecauseofhardwork D.thedoctorwantedhertodoso 2Whentoldtolieinbedtotakeayear'srestthewriter. A.wasverygratefultothedoctor B.becameveryworried C.turnedtoaneighborMr.Rudolfforhelp D.thoughtofherbitterexperiencesinthepast 3ThereasonwhythewritersaidIamdeeplygratefulnowforthatyearIspentinbedliesinthat. A.sheledaverycomfortablelifethatyear B.shebecameusedtolyinginbed C.sheperfectlyrecoveredfromherillness D.shecametoknowhowtoleadanactivelife 4Thewritertoldusofherstorymainlyto. A.tellusthatweshouldbegratefulforwhatwehavehad B.introduceherselftousbecauseshewaswiseandkind C.explainthatlyinginbedforalongtimeisnotaterriblething D.encourageustoachieveasmuchaswecan
The13thofJune1325IleftTangiermybirthplacewiththeintentionofmakingthepilgrimagetoMecca去麦加朝圣…toleaveallmyfriendstoabandonmyhomeasbirdsabandontheirnests.SobeginsanoldmanuscriptinalibraryinParis﹣thetraveldiaryofIbnBattuta. AlmosttwocenturiesbeforeColumbusthisyoungMoroccansetoffforMeccareturninghomethreedecadeslaterasoneofhistory'sgreattravelers.DrivenbycuriosityhejourneyedtoremotecornersoftheIslamicworldtravelingthrough44moderncountriesthreetimesasfarasMarcoPolo.LittlecelebratedintheWesthisnameiswellknownamongArabs.InhishometownofTangierasquareahotelacafeaferryboatandevenahamburgerarenamedafterhim. IbnBattutastayedinMeccaasastudentforseveralyearsbuttheurgetotravelsoontookover.InoneadventurehetraveledtoIndiaseekingprofitableemploymentwiththesultan﹣theMuslimrulerofDelhi.Onthewayhedescribedhisgroupbeingattackedintheopencountryby80menonfootandtwohorsemen:…IwashitbyanarrowandmyhorsebyanotherbutGodinhisgracepreservedme…InDelhithesultangavehimthepositionofjudgebasedonhispreviousstudyatMecca.ButthesultanhadanunpredictablecharacterandIbnBattutalookedforanopportunitytoleave.WhenthesultanofferedtofinanceatriptoChinaheagreed.IbnBattutasetoffinthreeshipsbutmisfortunestruckwhilehewasstillontheshore.Asuddenstormgroundedandbrokeuptwoshipsscattering散播treasureanddrowningmanypeopleandhorses.Ashewatchedthethirdshipwithallhisbelongingsandslaves﹣onecarryinghischild﹣wascarriedouttoseaandneverheardfromagain. AfteralifetimeofamazingadventuresIbnBattutawasfinallyorderedbytheSultanofMoroccotoreturnhometosharehiswisdomwiththeworld.Fortunatelyheagreedandwroteabookthathasbeentranslatedintonumerouslanguagesallowingpeopleeverywheretoreadabouthisunparalleledjourneys. 1WhatcanwelearnaboutIbnBattutafromthepassage? A.HehadgreatinterestintheIslamicworld. B.Hereturnedtohishomelandtowriteabook. C.HisjourneyswerelessimportantthanMarcoPolo's. D.Hisjourneyswereverycommonforpeopleofthattime. 2TheSultanofDelhigaveIbnBattutaapositionofjudgebecause. A.IbnBattutahadstudiedinMecca B.IbnBattutahadbeenajudgebefore C.IbnBattutahadbeenpopularwithArabs D.IbnBattutahadtraveledtomanycountries 3Whichisthebesttitleforthepassage? A.TheLearnedIbnBattuta B.AVisitortoMecca C.TheTravelsofIbnBattuta D.DesireforAdventures
Whenbuildinghousespeopleusedtothinkaboutnotonlytheclimateoftheareasbutalsothebuildingmaterialsandthefashionsfortheirhouses.Howeversinceelectricitybecamemoreandmoreexpensivepeoplebegantopaymuchmoreattentiontotheenergytheycouldgetfortheirhousesandthenewwaystheycouldfindtoprotecttheirhousesfrombothcoldandheat. Nowhousesofanoldyetnewtypehavebeenwidelybuilt.Insomepartsoftheworldpeoplesharetheirhouseswiththeirlivestock家畜.Duringcoldweathertheygathertheircowsgoatsorotheranimalsandkeepthemonthefirstflooroftheirhouses.Thereasonsarethattheanimalscanbeprotectedfromthecoldandthattheycanhelptoheatthehousesaswell.Thebodyheatgivenoffbytheanimalsrisestothesecondfloorofthehouseswherepeoplelive.Bysharingtheirhouseswiththeirlivestockpeoplegainasourceofheat. Peoplewholiveinornearcitiesdonotusuallykeeplivestock.Howeverhomebuildersusethefactthatheatrises.Thisnaturallawcanbeusedinbuildinghousesintheseareas.Insteadofkeepinglivestockonthefirstfloorbuildersfillitwithlargerocks.Astheyareopentothesun'sraysduringcoldweathertheserockstakeinheat.Theyalsogiveofftheheatandofcoursethewarmairrisesintothelivingareasofthehouses.Sothesehousesareenergy﹣saving. House﹣buildingbecomesagreatchallenge挑战tobuildingdesignersandenergyengineers.Theytrytomeetthischallengebylearningfromoldtraditionsandbyusingmoderntechnology.Andsomedayinthefuturepeoplewillbeabletoliveinmoreenergy﹣savinghouses. 1Whatdidpeoplebegintoconsideraselectricitywasnolongercheap? A.Theclimateoftheirareas. B.Theenergyfortheirhouses. C.Thefashionsfortheirhouses. D.Thebuildingmaterialsfortheirhouses. 2Peopleinsomeareasgainasourceofheatby. A.keepingtheirlivestockdownstairs B.protectingtheirlivestockfromthecold C.sharingtheirhousesonlywiththeircows D.livingonthesecondfloorwiththeirlivestock 3Theunderlinedwordsnaturallawinthethirdparagraphrefertothefactthat. A.heatraisesthetemperatureinthehouses B.heatgoesintheupwarddirection C.heatgoesupiftemperatureisraised D.heatincreasesthetemperatureofrocks
假定你是李华你的同班同学__的家乡遭受台风彩虹TyphoonMujigae袭击洪水毁坏了家园你作为班长代表班级给正在抗洪的他写一封慰问信要点如下: 1.对该同学表示关心; 2.向其提供一些帮助如捐助和补习; 3.表达希望和对其重建家园的信心; 注意: 1.词数80左右. 2.可以适当增加细节以使行文连贯. 3.开头已给不计入词数. DearWangGang We'resosorrytohearthatasevereTyphoonMujigaehityourhometownleavingyourhouseinruins. Yourssincerely LiHua
MospeoplenowadaysownadevicethatfeaturesartificialinwiththeliesofSiralwaystheretogreetuswithafriendlyvoice.ButtheMicrosoft'sXiaolceisdifferent.Launchedin2014fortheChinesemarketshehasacreativeedgeoverhercompetitors. WhilemostAIassistantssimplyreadoutinformationtheygetonlinesuchasmovielistingsorweatherforecastsXiaolcehasrealnessthattheothersck.IndeedifyouaskednicelyshecouldreadyouapoemfromhernewweeklycolumninWestChinaCityDaily.ThenewspaperhasbeenprintingXiaolce'sself﹣pennedpoetryeachweeksinceAug19takenfromherownbookofpoemsTheSunlightthatLosttheClassWindow. ToturnXiaoiceintoamasterofpoetryMicrosoftscientistsfedhertheworksofover500influentialmodernpoetsincludingthoseofHuShiinHuiyinXuZhimoandWenYiduoreportedChinaDaily.Thisledtoherfiguringoutawritingstyleofherownandcreatingover70000originalpoemswith137usedtoproducethebook. MostofthepoemsareindistinguishablefromthosewrittenbyhumansandXiaolce'sbookevengotgoodfeedbackfromexperts.Xiaolce'sworkcarriesastrangetaste.ThemoreyouchewonitthemoreinterestingitbecomesZhangZonggangaliteratureprofessorattheNanjingUniversityofScienceandTechnologytoldtheSouthChinaMorningPostButitseemsnoteveryoneisafan. Thepoemsdisgustedmewiththeirslipperyandrhythm.ThesentenceswereaimlessandsuperficiallackingtheinnerlogicforemotionalexpressionYuan﹣basedpoetYuJiantoldChinaYouthDaily. Thisisn'tthefirstAIistoattemptpoetry.LastyearGoogle'sParseyMcParsefacemadesomepoemsofitsownalthoughtheywerebrandedmiserableandmournfulbyreviewers. WhileitseemslikeAlisbecomingmoreintelligentandlessartificialallthetimewhenitcomestocreativityperhapsthisisonejobthatsoftwareshouldleavetoushumans. 1WhathasmadetheMicrosoft'sXinolcedifferentfrommostAlassistants? A.Artificialintelligence B.Emotionalexpression. C.Toneandrhythm D.Creativityandrealness 2WhichofthefollowingaboutXiaolceisTrueaccordingtothepassage? A.Xiaolceimitatesinfluentialmodempoetstowritepoems B.Allherpoemsareexactlylikethosewrittenbyhumans C.EveryonedoesnotenjoyXinolce'swork. D.XiaolceisthefirstAltowritepoems. 3WhatisthewritersattitudetowardsthecreativityofAI? A.Hopeful. B.Doubtful C.Concerned. D.Ambiguous.
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某种H+﹣ATPase是一种位于膜上的载体蛋白具有ATP水解酶活性能够利用水解ATP释放的能量逆浓度梯度跨膜转运H+．①将某植物气孔的保卫细胞悬浮在一定pH的溶液中假设细胞内的pH高于细胞外置于暗中一段时间后溶液的pH不变．②再将含有保卫细胞的该溶液分成两组一组照射蓝光后溶液的pH明显降低另一组先在溶液中加入H+﹣ATPase的抑制剂抑制ATP水解再用蓝光照射溶液的pH不变．根据上述实验结果下列推测不合理的是
Attitudeisn'tquiteeverythingwhenitcomestobeingsuccessfulbutattitudeplaysapartineverystageofyourlife.Apoorattitudegetsmorepeople1thananyothersinglefactorandagoodattitudegetspeoplejobsandhelpsthem2thosejobsmorethananyotherfactor. Yourattitude3manypeoplefromyourfamilytothestrangeronthestreetcorner.Yourattitudeisparticularlyimportantwhenyou4seeminglyhopelesssituations.Losingajoborafriendbecauseofapoorattitudeis5. Youcanfindatleasttwo6tolookateverything.Apessimistlooksfordifficultyintheopportunitywhileanoptimistlooksforopportunityinthedifficulty.Apoetoflongagoputthe7betweenoptimismandpessimismthisway:Twomen8outfromprisonbars﹣﹣﹣onesawmud;theothersawstars. Unfortunatelymanypeoplelookonlyatthe9andnotattheopportunitythatlieswithintheproblem.Many10complainaboutthedifficultyoftheirjobsforexamplenotrealizingthatifthejobwere11theemployerwouldhiresomeonewithlessabilityatalowerwage.Asmallcoincanhideeventhesunifyouholdthecoincloseenoughtoyour12.Sowhenyougettooclosetoyourproblemsto13objectivelyaboutthemtryto14howyourvisioncanbe15.Takeastepbackandlookatthesituationfromanewangle. Youcan'tdoanythingtochangethefactthataproblem16butyoucandoagreatdealtofindtheopportunitywithinthatproblem.You're17abettertomorrowbydoingyourbesttodayand18aplanofactionforthetomorrowsthatlieahead.19justrememberto20apositivementalattitude. 1A.hired B.fired C.employed D.engaged 2A.offer B.supply C.keep D.create 3A.affects B.costs C.makes D.trains 4A.lose B.predict C.judge D.face 5A.unfortunate B.unnecessary C.inconvenient D.impossible 6A.desires B.ways C.spirits D.solutions 7A.importance B.necessity C.similarity D.difference 8A.looked B.glared C.celebrated D.concluded 9A.everything B.situation C.problem D.possibility 10A.employers B.employees C.bosses D.secretaries 11A.simple B.tough C.difficult D.interesting 12A.ear B.nose C.eye D.mouth 13A.worry B.ignore C.admit D.think 14A.keepinmind B.keepintouch C.getridof D.doawaywith 15A.observed B.blocked C.imagined D.doubted 16A.appears B.works C.exists D.contains 17A.guaranteed B.persuaded C.satisfied D.convinced 18A.struggling B.developing C.dreaming D.balancing 19A.Inthisrespect B.Incontrast C.Inotherwords D.Inaword 20A.consider B.amuse C.occupy D.maintain
回答下列与生态系统相关的问题． 1在森林生态系统中生产者的能量来自于生产者的能量可以直接流向答出2点即可． 2通常对于一个水生生态系统来说可根据水体中含氧量的变化计算出生态系统中浮游植物的总初级生产量生产者所制造的有机物总量．若要测定某一水生生态系统中浮游植物的总初级生产量可在该水生生态系统中的某一水深处取水样将水样分成三等份一份直接测定O2含量A另两份分别装入不透光甲和透光乙的两个玻璃瓶中密闭后放回取样处若干小时后测定甲瓶中的O2含量B和乙瓶中的O2含量C．据此回答下列问题． 在甲乙瓶中生产者呼吸作用相同且瓶中只有生产者的条件下本实验中C与A的差值表示这段时间内C与B的差值表示这段时间内A与B的差值表示这段时间内．
在真核细胞的内质网和细胞核中能够合成的物质分别是
IgrewupinanagewhenIhadtowaitforalmosteverything.Classicmovieswereshownontelevision.Andofcourseonehadtobehomeattheappointedtimetowatchthem.TheWizardofOzforexamplewasbroadcastonlyonceayear.Thesteadilyheighteningsenseofexpectationasthebroadcastdateapproachedwasalmosttoomuchformy10﹣year﹣oldhearttobear. Andthentherewasmoney.Thebanksdidbusinessonweekdaysonly.Theyopenedat9andclosedat4.Youneededmoneybutdidn'tmakeittothebankontime?Wellcheckunderthesofacushionsorborrowfromfamilyorfriends. Suchwastheworldasrecentlyasthe1970s.Everythingseemedtooperateonastrictclockandthewordsondemandhadnomeaning.Thiswasthewaythingsworkedanditwasallweknew. Andthenseeminglyovernighteverythingchanged.ItsuddenlyseemedasifIneverhadtobeanywhereatanappointedtimebecauseeverythingwasavailableallthetime.Thechangedtimesontheotherhandhaveencouragednothinglessthanaconstantsenseofurgencywhichisironic讽刺性:Ifwecanhaveanythingwewantanytimewewantitshouldn'twebelesshurried?Theansweristhatanondemandlifestylehascreatedanappetiteforspeed:IfIcanhavesomethingthisfastwhycan'tIhaveitfaster?RecentlyIreadabookthathasFSTRgetit?writtenacrossitscover.Oneofitsmetaphors隐喻wastelling:Firsttherewasthefresh﹣squeezedlemon;thentherewasthelemonademix;nowwejustbuythelemonadebythegallon加仑. AndsoonthishotdayIwenttothesupermarketandboughtthreefreshlemons.Isqueezedthemintoatallglass.ThenIfilledtheglasswithcoldwatericeandateaspoonofsugar.FreshlemonadeinhandIwentoutsidesatinmylawnchairandlookedoutovertheriver. Yestimepassesquickly.Butnowandthenitdoesn'thaveto. 1HowdidtheyoungauthorfeelaboutwatchingTheWizardofOz? A.Excited B.Surprised C.Touched. D.Worried 2What'stheauthor'sattitudetowardtheconceptconveyedinbookhereadrecently? A.Positive. B.Optimistic. C.Cautious. D.Opposing. 3Whatdoestheauthortrytoconveybymakinglemonadehimself? A.Hisprideinmakingthemosttastyjuice.. B.Hissatisfactionofmakinguseofmoderntechnology. C.Hisdisapprovalofthedemandsofahurriedage. D.Hisdisappointmentatthelemonadeinthesupermarket. 4Whatcanbeasuitabletitleforthetext? A.Howdowebalancespeedandwork? B.Wewaitedanditwasworthit. C.Whydoestimepassquicklynow? D.Weworrybutitmakesnosense.
赫尔希和蔡斯的T2噬菌体侵染大肠杆菌实验证实了DNA是遗传物质下列关于该实验的叙述正确的是
假设你是李华.你校英文报正在征集关于如何保持身体健康的短文.请根据以下提示用英语写一篇短文. 1.健康的饮食; 2.适当的运动; 3.良好的生活习惯. 注意: 1.词数80左右. 2.可适当增加细节以使行文连贯.
某种植物的羽裂叶和全缘叶是一对相对性状．某同学用全缘叶植株植株甲进行了下列四个实验． ①让植株甲进行自花传粉子代出现性状分离 ②用植株甲给另一全缘叶植株授粉子代均为全缘叶 ③用植株甲给羽裂叶植株授粉子代中全缘叶与羽裂叶的比例为11 ④用植株甲给另一全缘叶植株授粉子代中全缘叶与羽裂叶的比例为31 其中能够判定植株甲为杂合子的实验是
我国生物多样性较低的西部沙漠地区生长着一种叶退化的药用植物锁阳该植物依附在另一种植物小果白刺的根部生长从其根部获取营养物质．下列相关叙述正确的是
下列关于加酶洗涤剂的叙述错误的是
如图为初级精母细胞减数分裂时的一对同源染色体示意图图中1～8表示基因．不考虑突变的情况下下列叙述正确的是
物质W是一种含氮有机物会污染土壤．W在培养基中达到一定量时培养基表现为不透明．某研究小组欲从土壤中筛选出能降解W的细菌目标菌．回答下列问题． 1要从土壤中分离目标菌所用选择培养基中的氮源应该是． 2在从土壤中分离目标菌的过程中发现培养基上甲乙两种细菌都能生长并形成菌落如图所示．如果要得到目标菌应该选择菌落进一步纯化．选择的依据是． 3土壤中的某些微生物可以利用空气中的氮气作为氮源若要设计实验进一步确定甲乙菌能否利用空气中的氮气作为氮源请简要写出实验思路预期结果和结论即． 4该小组将人工合成的一段DNA转入大肠杆菌使大肠杆菌产生能降解W的酶酶E．为了比较酶E与天然酶降解W能力的差异该小组拟进行如下实验请完善相关内容． ①在含有一定浓度W的固体培养基上A处滴加含有酶E的缓冲液B处滴加含有相同浓度天然酶的缓冲液C处滴加三处滴加量相同． ②一段时间后测量透明圈的直径．若C处没有出现透明圈说明若AB处形成的透明圈直径大小相近说明．
Somepeoplearesorude! Whosendsane﹣mailoratextmessagethatjustsaysThankyou?Wholeavesavoicemailmessageratherthantextsyou?WhoasksforafacteasilyfoundonGoogle?Don'tthesepeoplerealizethatthey'rewastingyourtime? MaybeI'mtherudeonefornotappreciatinglife'slittlepoliteness.Butmanysocialagreedstandardsjustdon'tmakesensetopeopledrowningindigitalcommunication. Intextsyoudon'thavetodeclarewhoyouareorevensayhello;E﹣mailtooisslowerthanatext;Voicemailisanowimpolitewayoftryingtoconnect. MyfatherlearnedthislessonafterleavingmeadozenvoicemailmessagesnoneofwhichIlistenedto.ExasperatedhecalledmysistertoexpresshisdissatisfactionthatIneverreturnedhisphonecalls.Whyareyouleavinghimvoicemails?mysisterasked.Justtexthim. Intheageofthesmartphonethereisnoreasontoaskonce﹣acceptablequestionsabout:theweatherforecastabusiness'sphonenumberordirectionstoahousearestaurantwhichcanbeeasilyfoundonGoogleMaps.Butpeoplestillaskthesethings.Andwhenyouanswertheyrespondwithathank﹣youe﹣mail. Howtohandlethesedifferingstandards?Easy:Consideryouraudience.Somepeopleespeciallyolderonesappreciateathank﹣youmessage.Otherslikemewantnoreply. Theanthropologist人类学家MargaretMeadoncesaidthatintraditionalsocietiestheyounglearnfromtheold.Butinmodernsocietiestheoldcanalsolearnfromtheyoung.Here'shopingthatpolitenessnevergoesoutoffashionbutthattime﹣wastingformsofcommunicationdo. 1Whydidn'ttheauthorlistentohisfather'svoicemailmessages? A.Hethoughtvoicemailwouldwastehistime. B.Hethoughtvoicemailwasanimpolitewayoftryingtoconnect. C.Hethoughtvoicemailwasanimportantwayofcommunication. D.Hethoughthisfatherlefthimtoomanyvoicemails. 2Whatseemstobetheauthor'sattitudetowardtexts? A.Favorable. B.Doubtful. C.Reserved. D.Disapproving. 3Whatdoestheauthorsuggestmodernpeopledoincommunication? A.Learnfromtheoldgeneration. B.Askonce﹣acceptablequestions. C.Respondwithathank﹣youemail. D.Considertheiraudience.
假定你是李华.因你班地理老师MrLee出差在外明天上午的地理课改为英国文学课请按以下要点口头告知大家: 1.课程变动情况; 2.说明原因; 3.课前预习任务布置. 注意: 1.词数80左右; 2.可适当增加细节以使行文连贯.
下列关于观察植物细胞有丝分裂实验的叙述正确的是
下列关于细胞内蛋白质和核酸的叙述正确的是
假定你住在一个涉外小区社区委员会请你帮忙用英文以短文的形式写一封电子邮件将周末农家果摘活动的安排传达给住户. 要点: 时间:下周六上午8.00至1100 内容:采摘苹果 报名:下周四下午500前:社区办公室 提示:带帽子手套等 注意: 1.词数:80左右 2可适当增加细节以使行文连贯 参考词汇:社区Community
如图为燕麦胚芽鞘经过单侧光照射后甲乙两侧的生长情况对照组未经单侧光处理．下列叙述正确的是
Thisyeartheheadmasteroftheschoolrecommendedabooktous.ThebookisTheElement:HowFindingYourPassionChangesEverythingbyRobinson.TheElement元素1thepointatwhichthethingsweare2aboutandthethingswearegoodatcometogether.Theauthorsaysitis3tofindourElementnotjustforourown4butfortheimprovementofourworld. MickFleetwoodisoneofthemostfamousrockdrummersintheworld.5thetestsshowedhisintelligencewaslowwhenhewasinschool.Hismindwouldgo6whenhisteacheraskedhimtorecitethealphabetbackwards.7Mick'slearningdisabilitydoesn't8hiswaytosuccess.Hecomesfromahomewherehisparentscouldseewhatis9hislimitsandunderstandthepoor10performancehardlydooms注定onetofailure. Mick'slowscoredidn't11hisparents.Theyknew12himfromschoolandtheteststhat13onlyanarrowrangeofintelligencemaybethepathtoasuccessfulcareer.Insteadof14Mickasalosertheyunderstandthathehasagreattalentforsomethingthatascoreonatestcannever15. Inschoolthereisanefforttohelpstudents16whattalentstheyhave.ButthisisonlyonepieceofthePuzzle17isstressedbyRobinson.Theotherpieceisfinding18aperson'stalentandtheloveof19thattalentintersect交又. IhaveenjoyedthisbookandIreally20theguidanceofthisbook. 1A.refersto B.attachesto C.belongsto D.turnsto 2A.particular B.anxious C.certain D.enthusiastic 3A.reasonable B.natural C.vital D.convenient 4A.agreements B.arrangements C.qualification D.accomplishment 5A.instead B.However C.Moreover D.Therefore 6A.blank B.wrong C.bad D.mad 7A.Honestly B.Actually C.Fortunately D.Obviously 8A.cutdown B.cutaway C.cutthrough D.cutoff 9A.beneath B.within C.across D.beyond 10A.physical B.mental C.academic D.daily 11A.amuse B.annoy C.affect D.alarm 12A.defending B.withdrawing C.prohibiting D.discouraging 13A.describe B.evaluate C.adjust D.convey 14A.selecting B.appointing C.classifying D.recommending 15A.indicate B.distribute C.acquire D.circulate 16A.pickout B.figureout C.carryout D.pointout 17A.where B.that C.which D.as 18A.how B.where C.why D.what 19A.preparing B.correcting C.exercising D.accelerating 20A.acknowledge B.benefit C.admit D.strike
Withtheirpipesandlidstoavoidspillscoffeecupshavelongbeenthesubstituteforadults.NowStarbucksisgoingallinontheconceptbyswearingtogetridofstrawsby2020﹣﹣andit'sallforaverygoodreason.Thismoveisananswertoourownpartnersaboutwhatwecandotoreducetheneedforstraws.Notusingastrawisthebestthingwecandofortheenvironment.InplaceofplasticstrawsStarbucksplanstoofferrecyclablelidsforalliceddrinksandperstrawsforcoffee.ThetransitionisalreadytakingplaceinStarbucks'hometownofSeattlewhereabanonplasticstrawswentintoplaceonJulyI.Byrollinghistnl2800ofherorsby2020ecompsaystheyareannuallyremovingmorethanonebillionstrawsfromgoingintocirculation﹣andpotentiallytheocean.Starbucks'decisiontograduallystopusingsingle﹣useplasticstrawsisashiningexampleoftheimportantrolethatcompaniescanplayinstoppingthetideofoceanplastic.Witheightmillionmetrictonsofplasticenteringtheoceaneveryyearwecannotaffordtoletindustrysitonthesidelines.Marinelifehasa50%deathratewhenitswallowsplasticyetresearchersbelievetherewillbemoreplasticintheoceanthanfishbytheyear2050ifthisrateoflittercontinues.Thatmeanstherecanbeanimmediatepositiveimpactifweswapplasticstrawsforenvironmentallyfriendlyalternatives.ThesmartdesignonthecupforcolddrinkscomesfromStarbucks'in﹣houseteamofdesignersandhasbeenindevelopmentfortwoyears.Howevertheannouncementcomesasoutcry倒彩increasesoverthedangersthatplasticstrawscancausetomarinelife.Othercompaniesmakingtheeco﹣friendlyswapalsoannouncedplanslastmonthtotestalternativestoplasticstraws.1WhydoesStarbucksdecidetogetridofplasticstraws?A.Todecreaseitscost.B.Tosatisfythecustomers'needs.C.Tocreateagreenerplanet.D.Toenlargeitsbusinessworldwide.2Theunderlinedword'transition'inparagraph2refersto.A.courseB.changeC.circulation.D.conflict.3What'sthetextmainlyabout?A.Starbucksisthrowingawayplasticstrawsforaworthycause.B.AsalespromotionofanewbrandbyStarbucksisbeingdoneC.Scientistsaremakingeffortstosolveoceanplasticpollution.D.Environmentallyfriendlymaterialwillreplaceplasticstraws
OnedaywhenIwasaboutnineyearsoldIranintomymother'sbedroomandopenedthedresser.Theninthetopdrawerwasasmall1jewelrybox.Iwasfascinatedbyitstreasures.ThenIsawtherewassomething2underapieceofcloth.3theclothIfoundalittlewhitechipofchina.Whydidmymotherkeepsucha4thing?Shiningslightlyinthelightit5noanswers. SomemonthslaterIwassettingthedinnertablewhenmyneighborMargeknockedatthedoor.Cominginand6thetableMargesaidOhyouareexpectingcompany.I'll7anothertime. NocomeoninMumreplied.Wearenot8anyone. Butisn'tthatyourgoodchina?Margeasked.I'd9trustkidstohandlemygooddishes! Mumlaughed.Tonight'smyfamily'sfavoritemeal.Ifyousetyourbesttableforan10mealwithguestswhynotforyourown11?Afewbrokenplatesareasmall12topayforthejoyweget.Thensheadded13everychipandcrackhasastorytotell. Mumwenttothecupboardandtookdownaplate.ShesaidSeeingthis14ontheedgehere?IthappenedwhenIwas17. Hervoice15.Onedaymybrotherinvitedayoungmantodinnerandsathimnexttome.Iwasso16thatwhenItooktheplateit17andknockedagainstthefork.Astheyoungmanwasleavinghe18apieceofbrokenchinainmyhandwithoutsayingaword. Icouldn'tforgetaboutthatplatewiththe19chip.Iwentuptotakeoutthelittlewoodenjewelryboxagain.Iexaminedthechip20.Thechipwhichmymotherhadsavedwithcarebelongedtotheplateshebrokeonthedayshemetmyfather. 1A.silver B.gold C.china D.wooden 2A.hidden B.unpaid C.removed D.fixed 3A.Covering B.Tearing C.Seeking D.Lifting 4A.broken B.genuine C.beautiful D.valuable 5A.found B.invented C.offered D.selected 6A.glaringat B.glancingat C.lookingon D.spyingon 7A.goby B.passby C.stopby D.standby 8A.inviting B.expecting C.consulting D.celebrating 9A.always B.sometimes C.never D.regularly 10A.common B.strange C.unbelievable D.special 11A.family B.relative C.neighbor D.ancestor 12A.value B.fault C.bet D.price 13A.However B.Though C.Besides D.Otherwise 14A.break B.scene C.spot D.design 15A.hardened B.softened C.sharpened D.weakened 16A.nervous B.anxious C.surprised D.pleased 17A.jumped B.escaped C.slipped D.left 18A.threw B.laid C.examined D.picked 19A.replaced B.penniless C.remaining D.missing 20A.secretly B.carefully C.gratefully D.proudly
某研究小组切取某种植物胚芽鞘的顶端分成甲乙两组按下图所示的方法用琼脂块收集生长素再将含有生长素的琼脂块置于去顶胚芽鞘切段的一侧一段时间后测量胚芽鞘切段的弯曲程度α角测得数据如下表据此回答问题． 1生长素在胚芽鞘中的运输属于极性运输这种运输的方向是． 2上图中α角形成的原因是． 3据表可知乙组中左右两侧的琼脂块所引起的α角基本相同但小于甲琼脂块所引起的α角原因是．
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