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如图是探究光合作用历程中科学家做的三个有关实验．请回答下列问题： （1）图中三个实验可以证明光合作用需要光照的是 ；实验前需要进行“__”处理的是 ． （2）图一的结论是 ；若某人...
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高三下学期生物《》真题及答案
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光合作用之谜是经过众多科学家的不懈努力才解开的以下资料是科学家探究光合作用过程的部分实验请根据材料回
光合作用之谜是经过众多科学家的不懈努力才解开的以下资料是科学家探究光合作用过程的部分实验请根据材料回
下列教材中的实验科学家使用的科技手段显著不同于其他的是
恩格尔曼证明叶绿体是光合作用的场所
鲁宾和卡门证明光合作用释放的氧气来自水
卡尔文探明CO
2
中的碳在光合作用中转化成有机物中碳的途径
科学家对分泌蛋白的合成和分泌的研究
生物科学是实验科学下面是某同学对生物科学的几个经典科学实验分析其中正确的是①德国科学家萨克斯将绿色叶
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下列有关科学家科学研究的经典实验中采取了同位素示踪法的是①赫尔希和蔡斯的实验证明了DNA是遗传物质②
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在夏季晴朗的白天科学家对某种绿色植物叶片光合作用的强度进行分析得到如图的曲线请分析曲线图并回答AB段
美国科学家恩格尔曼用水绵进行光合作用的实验图为实验示意图请回答下列问题此实验证明叶绿体释放出来的气体
光合作用之谜是经过众多科学家的不懈努力才解开的以下资料是科学家探究光合作用过程的部分实验请根据材料回
请按时间先后顺序排列下列事件①德国科学家萨克斯证明了绿色叶片在光合作用中产生了淀粉②美国科学家鲁宾和
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14分科学家们做过许多实验经历了一个多世纪的漫长过程才逐渐发现光合作用的场所条件原料和产物结合所学知
请完成光合作用的探索历程的有关问题11864年德国科学家萨克斯将绿色叶片放在暗处几小时然后把此叶片一
请按时间先后顺序排列下列事件①德国科学家萨克斯证明了绿色叶片在光合作用中产生了淀粉②美国科学家鲁宾和
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请按时间先后顺序排列事件①德国科学家萨克斯证明了绿色叶片在光合作用中产生了淀粉②美国科学家鲁宾和卡门
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下列实验中科学家的使用手段或技术显著不同于其他的是
科学家对分泌蛋白的合成和分泌的研究
鲁宾和卡门证明光合作用释放的氧气来自水
恩格尔曼证明叶绿体是光合作用的场所
卡尔文探明CO
2
中的碳在光合作用中转化成有机物中碳的途径
下列有关科学家探究光合作用历程的叙述不正确的是
梅耶通过研究指出，植物进行光合作用时，把光能转换成化学能储存起来
萨克斯通过叶片曝光和遮光处理的对照，证明光合作用能将CO
2
合成淀粉
鲁宾和卡门通过设置对比实验，证明光合作用释放的O
2
来自水
卡尔文利用同位素标记法探明了CO
2
中的碳在光合作用中的转化途径
请按时间先后顺序排列事件①德国科学家萨克斯证明了绿色叶片在光合作用中产生了淀粉②美国科学家鲁宾和卡门
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下面对教材中的实验科学家使用的科技手段显著不同于其他的是
恩格尔曼证明叶绿体是光合作用的场所
鲁宾和卡门证明光合作用释放的氧气来自水
卡尔文探明CO
2
中的碳在光合作用中转化成有机物中碳的途径
科学家对分泌蛋白的合成和分泌的研究
科学家研究三角梅和扁果菊的光合速率实验结果如图所示下列说法中不正确的是
与三角梅相比，扁果菊细胞中与光合作用有关的酶对温度变化更加敏感
15℃不一定是扁果菊光合作用的最适温度
在温度相对低的条件下，扁果菊光合速率大于三角梅
三角梅光合速率不受外界温度的影响
请回答与光合作用有关的问题 科学家用14C标记的14CO2追踪检查其放射性最终探明了C
下列教材中的实验科学家使用的科技手段显著不同于其它的是
恩格尔曼证明叶绿体是光合作用的场所
鲁宾和卡门证明光合作用释放的氧气来自水
卡尔文探明CO
2
中的碳在光合作用中转化成有机物中碳的途径
科学家对分泌蛋白的合成和分泌的研究
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WhenOliverSacks82diedonAug30athishomeinNewYorkCitytheworldwassaddenedbythelossofabrilliantneurologist神经学者andatrulybeautifulmind. London﹣bornSackswasmostfamousforhiswriting.AForbesobituary讣告callshimoneofthegreatestwritersofscienceofthepast50years.Maybethegreatest. Inhisbest﹣selling1985bookTheManWhoMistookHisWifeforaHatSacksdescribedamanwhocouldnottellthedifferencebetweenhiswife'sfaceandhishatbecausehisbrainhaddifficultytellingwhathesaw. In2006Discovermagazinerankeditamongthe25greatestsciencebooksofalltimedeclaringLotsofneuroscientistsnowlookingintothemysteriesofthehumanbraincite列举thisbookastheirgreatestinspiration/ His1973bookAwakeningsisaboutagroupofpatientswhowerefrozeninadecades﹣longsleepuntilSackstriedanewtreatment.Thebookledtoa1990movieinwhichSackswasactedbyRobinWilliams.Itwasnominated提名forthreeAcademyAwards. AnotherbookAnAnthropologistonMarspublishedin1995describedcaseslikethatofapainterwholosthiscolorvisioninacaraccidentbutfoundnewcreativepowerinblack﹣and﹣whiteimages.Sacksalsowrotethestoryofa50﹣year﹣oldmanwhosuddenlyregainedsightafternearlyalifetimeofblindness.Theexperiencewasadisaster.Theman'sbraincouldnotmakesenseofthevisualworld.Afterafullandrichlifeasablindpersonhebecameaverydisabledandmiserable悲惨的sightedmanSackswrote.Whenhewentblindagainhewasrathergladofit. DespitethedramaandunusualstoriesSacks'bookswerenotmeanttobefreakshows.OliverSackshumanizesillness…hewritesofbodyandmindandfromeveryoneofhiscasestudiesthereshowsafeelingofrespectforthepatientandfortheillnessRoaldHoffmannaNobelPrize﹣winningchemistsaidin2001. WhenSacksreceivedtheLewisThomasPrizeforsciencewritingin2002thecitation荣誉状declareduSackspressesustofollowhimintounknownareasofhumanexperienceandforcesustorealizeoncetherethatwearefacingonlyourselves. 1ThefollowingstatementsarewrongEXCEPT. A.TheManWhoMistookHisWifeforaHatwasrankedamongthe25greatestsciencebooks B.AnthropologistonMarsledtoamovieinwhichSackswasactedbyRobinWilliams C.Sacksrecordedamanwhoregainedsightafteralifetimeblindness D.Awakeningsisoftencitedbyneuroscientiststoprovethemysteryofhumanbrain 2WhywasSackscalledoneofthegreatestwritersofscienceoverthepast50years? A.HewasborninLondonandmostfamousforhiswriting. B.Hewroteaseriesofbookstheinfluenceofwhichwasgreat. C.Hewasabrilliantneurologistandhadatrulybeautifulmind. D.HereceivedtheLewisThomasPrizeforsciencewritingin2002. 3Whichofthefollowingistrueaccordingtothepassage? A.OliverSackslosthiscolorvisioninacaraccident. B.OliverSackswontheNobelPrizein2002. C.Awakeningswasfilmedin1973inwhichRobinWilliamsactedasSacks. D.OliverSacksshowedrespectforhumanityinhisbooks. 4Thepassageismainlyabout. A.theawardsOliverSacks'won B.thelifeexperiencesofOliverSacks C.theinfluenceofOliverSacks'works D.thereasonswhyOliverSackssucceeded
下列物质中在细胞内主要以离子形式存在的是
加拉帕戈斯群岛被誉为生物进化的“活的博物馆”群岛有原生鸟类50多种还有巨型乌龟蜥蜴鸬鹚燕尾鸥等当地特有物种下列叙述符合现代生物进化论理论的是
Lifegettingyoudown?Learntobounceback Thatwhichdoesnotkillusmakesusstronger.Nietzschesaid.Thereareanumberofwaysthatcangetusthroughtoughtimeshelpustobouncebackandmakeushappier.1. Findsomethingyoucancontrol. 2Buttakingsmallpositivestepsinanyareaofourlifecanhavearippleeffectenablingustomoveforwardintheproblemarea. 3. Asaspecieswetendtofocusonwhat'swrongratherthanwhat'sright.Butwecanbenefitalotfrompayingattentiontowhat'sgoingright.Psychologistshaveshownconsciouslyfocusingonthesegoodthingshelpstoincreaseourexperienceofpositiveemotions. Checkyourthinking. 4LeadingpsychologistMartinSeligmanfoundthatthewayweinterpretthecausesofeverydaysetbackscanhaveasignificantimpactonourabilitytocopeandourphysicalhealth.Healsoshowedwecanlearnmoreresilient有弹性的thinkingstyles. Distractyourself. Whenwearetrappedinaproblemitishardtothinkcreativelyaboutwaystodealwithit.Itoftenhelpstotaketimeoutfromthethingsyouareworryingabout.5Notonlydoesthisgiveusabreakfromwhatwe'redoingandourworriesit'salsogreatforourminds. A.Alwaysdosomethingthatisright. B.It'struethattherearelotsofthingswecan'tcontrol. C.Aneffectivewayoftakingtimeoutisexercise. D.Nexttimeyouarefeelingstressedorstuckgivethematry. E.Focusonwhat'sright. F.Nexttimesomethinggoeswrongforyoupauseforamoment. G.Thewaywethinkcandestroyourownresilience.
利用二倍体西瓜经多倍体育种可获得三倍体无子西瓜．该育种方法主要依据的遗传学原理是
ThehugeT﹣rex霸王龙bendsoveralargetriceratops三角龙lyingonhissidebelow.WithitsmouthopenwidetheT﹣rexlooksreadytokillthetriceratopswithafinalbitetothetriceratops'sneck.ThedisplaywillbefoundattheNationalMuseumofNaturalHistory. ThemuseumhassoughtahugeT﹣rexskeleton骨架formanyyears.Beforeitusedamodelofone.ButmuseumdirectorKirkJohnsonsaysthatwasnevergoodenough.It'sbeenkindofdeeplyembarrassingtobethenationalmuseumandNOThaveaT﹣rexhesaid.TheT﹣rexdisplayisnowthecenterpieceofthemuseum'snewestshowwhichwillbeavailabletothepubliconJuly15. ThatT﹣rexnamedSuewasfoundinSouthDakota.Officialsatthemuseumbuiltaspecialareafortheskeleton.ItincludesagiftstoreofallthingsrelatedtoSue.SueevenhasherownTwitteraccountandamediapresentationofherlifestory. InmoderntimesmovieslikeJurassicPark侏罗纪公园havehelpedgrowdinosaurinterestforanewgenerationofyoungfans.ButsuchmoviesdescribetheT﹣rexesasmostlyhugestupidanddangerousanimalswhicharetruethreatinthefighting:quickintelligentandaggressivehuntersingroups. 1WhatisdescribedinParagraph1? A.HowaT﹣rexhuntsinthewild. B.HowaT﹣rexwillbedisplayedinamuseum. C.HowaT﹣rexispaintedinapicture. D.HowaT﹣rexisfilmedinamovie. 2WhatdoweknowabouttheT﹣rexskeleton? A.ItwasfoundinAustralia. B.Ithasbeenopentothepublic. C.Itisvaluedbythemuseum. D.Itisstillamodelone. 3Whatcanbeinferredfromthelastparagraph? A.Moviesaboutdinosaursshouldbereduced. B.Theyounggenerationdislikesdinosaurs. C.TheT﹣rexisakindofhugestupiddinosaur. D.Somemoviesaremisleadinginaway.
如图表示DNA分子结构中的一部分其中连接碱基A与T的是
加酶洗衣粉在温水中的洗涤效果更好这说明
MentionthewordsuperheroandtheimagesthatcometomindareoffictionalcharacterslikeSpidermanWonderWomanorBatman.HoweverphotographerJoshRossihasusedhiscameratoshowtheworld'srealsuperheroes﹣youngchildrenwhoarebattlingseverediseasesanddisabilities. Theeventleadingtothecreativeprojectbeganin2016whenRossifulfilledhisthenthree﹣year﹣olddaughter'sdreamofbecomingWonderWoman.ThankstothehandmadecostumeandRossi'simpressivePhotoshopskillsthephotoshootinstantlybecameahit. SinceitwasWonderWomanthatbroughtabouttheideaRossidecidedtofocusonthesuperheroesthatwillappearalongsideherintheupcomingmovieJusticeLeague.Tomakethephotoshootmoremeaningfultothekidshematchedeachchildwithasuperherowithwhomtheyhadthemostincommon. Thefirstmemberofthereal﹣lifeJusticeLeaguewasKaydenKinckle.Thefive﹣year﹣oldusesprosthetics假肢towalkbecausebothhislegshadtobecutoffduetoaborndisorder.ToRossiKayden'sperfectsuperherowasCyborgwhowasahealthyboybeforeaterribleaccidentlefthiminjuredforcinghisfathertokeephimalivewithroboticparts. TeaganPettitwasbornwithonlyhalfaheartandhasalreadygonethroughthreeopen﹣heartsurgeries.AccordingtoRossithenine﹣year﹣oldfitsthebillforSupermanbecausetheybothhaveaweakheart.ThefictionalsuperherogrowsweakwhennearKryptonite氪whileTeagen'shalfheartistooweaktocontrolhisbodytemperature.ThephotographersaysSupermanandTeaganbothhaveheartsofsteel! 1WhatledRossitobeginhisheartwarmingproject? A.Hewasabigfanofsuperheroes. B.HephotographedhisdaughterasWonderWoman. C.Hewasaskedbymanyparentstofilmtheirchildren. D.Hewantedtoadvertisetheupcomingmovie. 2KaydenissimilartoaccordingtoRossi. A.Cyborg. B.WonderWoman. C.Teagan. D.Batman. 3Whatdoestheunderlinedphrasefitsthebillforinthelastparagraphmean? A.loves. B.matches. C.orders. D.watches. 4Whatcanbeasuitabletitleforthetext? A.ASuperheroPhotographer B.FictionalSuperheroes C.FansofSuperheroes D.Real﹣lifeSuperheroes
酵母菌无氧呼吸不能产生的物质是
人体细胞中多种多样的蛋白质执行着各种特定的功能抗体具有的主要功能是
蓝藻能够进行光合作用是因为它含有
下列关于细胞分化衰老凋亡和癌变的叙述中正确的是
假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.错误涉及一个单词的增加删除或修改. 增加:在缺词处加一个漏字符号Λ并在其下面写出该加的词. 删除把多余的词用斜线\划掉. 修改:在错的词下划一横线并在该词下面写出修改后的词. 注意1每处错误及其修改均仅限一词; 2.只允许修改10处多者从第11处起不计分. Iwasgoinghomebybikeinacoldafternoonwhenmybikebrokedown.AsIwaswonderinghowtodoanoldmancameover.Heofferedtohelpmeandsoonmybikerepaired.Ithankedhimbutaskedhowtorewardhim.Sheshookhisheadandthentoldmeastoryabouthowaboyhadhelpedhimtwoyearbefore.Hisstorymovedmedeep.Ilookedatthemanwithmyeyesfillingwithtears.Ineverthoughthecouldkeepsuchalittleincidentinthemindforyears.OnlythendoIbegintobelievethatonegoodturndeservesanother.
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. SaraSavickremembersonespecialEasterwhenshewasnineyearsold.Herparentsgaveherababyducklinginayellowbasket. MomsaidlaterthatsheboughtthelittleduckbecauseshefeltsorryforitrecalledSara.ThepeopleatthepetstorecoloredthefeatherspinkforEaster.SaranamedtheduckPinky. Sara'smotherreallydidn'tthinkthebabyduckwouldsurviveverylong.ButtohersurprisePinkygrewandgotstrongerandstronger.Soonthelittleducklingwasahealthyhungryduckwithwhitefeathers. WefedPinkyoatmealcookedanduncookedandsmallpiecesofvegetablessaidSara.PinkylivedinsidethehousewithSaraandherfamily.ShespeciallyfanciedtakingbathswithSara.EveryonetreatedPinkyasafamilymember. Butjustwheneverythingappearedtobeperfectthenightofthetalkcame.Sara'sMomandDadsatherdownexplainingthatthebestthingforPinkywastoliveanormalducklifewithotherducks.Itwasnotnaturalforduckstoliveindoorswithafamilyherfathertoldher.HeaddedPinkyneededtoswiminpondsanddoallthesamethingsthatducksinthewilddo. Sarastartedtocryknowingwhatwasgoingtohappen.Sara'sparentsdecidedtotakePinkytoaparkwhichwastwomilesaway.Therewasapondwithalotofotherducks.PinkywouldhavethechancetoliveanaturallifeandSaracouldstillvisither. ThebigdaycameSaraandherparentsputPinkyinaboxanddrovetothepark.SarasaidthatPinkydidnotlookhappy;maybePinkywasconvincedthatshewasahumannotaduck. 注意: 1.所续写短文的词数应为l50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. Paragraph1 EveryonewassadwhentheyleftPinkyatthepondevenSara'sfather. Paragraph2 ThenextmorningwhenlookingoutofthekitchenwindowSaracouldn'tbelievehereyes!
下列哪一项不是细胞核的结构组成部分
下列关于孟德尔研究遗传规律获得成功原因的叙述错误的是
已知函数fx＝|2x+m﹣1|+|2x﹣3|． 1当m＝2时求不等式fx≤6的解集 2若fx≤|2x﹣6|的解集包含区求m的取值范围．
Ifyouwearglasseschancesareyouaresmarter.ResearchpublishedinthefamousBritishjournalNatureCommunicationshasfoundthatpeoplewhodisplayedhigherlevelsofintelligencewerealmost30percentmorelikelytowearglasses. Thescientistsstudiedthegenesofthousandsofpeoplebetweentheagesof16and102.Thestudyshowedintelligencecanbeconnectedtophysicalcharacteristics.Onecharacteristicwaseyesight.In3outof10peoplewhoweremoreintelligenttherewasahigherchancetheyneedglasses.Scientistsalsosaidbeingsmarterhasotherbenefits.Itisconnectedtobetterhealth. Itisimportanttoremembertheseareconnectionswhicharenotprovencauses.Scientistscallthiscorrelation.Justbecausesomethingisconnectedtosomethingelsedoesnotmeanoneofthosethingscausedtheother.Andit'sworthnotingthatwhatconstitutes构成intelligenceissubjectiveandcanbedifficultifnotimpossibletomeasure. Forgetgenesthough.Plentyofproofshowswearingglassesmakespeoplethinkyouaremoreintelligentevenifyoudonotneedglasses.Anumberofstudieshavefoundpeoplewhowearglassesareseenassmarterhard﹣workingandhonest.Manylawyersusethisideatohelpwintheircases.LawyerHarveySlovisexplainedthis.Glassessoftentheirappearancehesaid.Sometimestherehasbeenahugeamountofproofshowingthatpeoplehewasdefendingbrokethelaw.Hehadthemwearglassesandtheyweren'tfoundguilty. GlassesarealsousedtoshowsomeoneisintelligentinmoviesandonTVIdeasaboutpeoplewhowearglasseshavebeguntoshift.Peoplewhodonotneedglassessometimeswearthemforfashiononly.Theywanttolookworldlyorcool.Butnoteveryoneisimpressedbythisideathough.GQmagazinesaidpeoplewhowearglassesforfashionaretryingtoohardtolooksmartandhip时髦的.Howeverthathasn'tstoppedmanycelebrities名人fromhappilywearingglasseseveniftheydonotneedthem.JustenBieberisjustonehigh﹣profilefanoffashionglasses. 1Whatdoesthenewstudyshow? A.Peoplewearingglassesaresmarter. B.Peoplewearingglassesarehealthier. C.Wearingglassescanmakepeoplecleverer. D.WearingglassesisassociatedwithhigherIQ. 2WhatdoestheunderlinedwordcorrelationinParagraph3mean? A.Shift. B.Link. C.Proof. D.Consequence. 3Whydosomelawyersasktheirclientstowearglassesincourt? A.Becauseitcancreateamoralimage. B.Becauseitcanmisleadthewitnesses. C.Becauseitcanhighlightclients'qualities. D.Becauseitcanprovetheclients'innocence. 4Whatisthegeneralattitudetothosewhowearglassesforfashion? A.Positive. B.Negative. C.Mixed. D.Indifferent.
人体细胞的生活环境称为内环境内环境是指
ForalongtimeIthoughtapresentandagiftwerenodifferent.Igrewupinahouseholdwherepresents1specialoccasionssaytherewerealwayspresentsforChristmasandourbirthdays. SowhenImarriedGarywhodidnotgivepresentsona2basisIhadtomakeanadjustment.Garydidnotwhollyavoidgift﹣givingthough.3noticinghowmanyhoursIspendonthe4hebroughthomeashoulderpad垫肩forthetelephonereceiver.Butmostlyhe5holidaysletaloneshopforearringsto6tomeshowinghisaffection. Itriedtochangehim7.IboughtbooksforhisbirthdaysandknittedhimhatsandsweatersforChristmas.8IbegantotellhimwhatIwantedgiving9instructionsbutgotnowhere. Lastyearwhenthesnowstorm10ourtownandhewasonbusinessIusedhispresent﹣roadscraper铲土机to11bothourdriveandourneighbor'sthinkinghow12earringswouldhavebeen.GaryhadwiselychosennotthethingI13butthethingthatheknewIwouldneed. I14begantounderstandthedifferencebetweenapresentandagift.Apresentisjustathing.Butagiftisbroaderandoftencannotbe15.Itisasmallactofkindnessthe16tobendtoanother'sneedsthesacrificeoftimeandeffort.17isagift.Anyexpressionofitfreelygivenisan18fromtheheartthatisimmeasurablybetterthanapresent. MyinsistenceonpresentsmusthaveseemedtoGaryalackof19.forthegiftshehadbeengivingallalongbutheneverstoppedgivingthem. GarywillbehomethisChristmasbutIdon't20apresent.Ialreadyhavethegreatestgift. 1A.marked B.involved C.expressed D.displayed 2A.daily B.rare C.temporary D.regular 3A.Therefore B.Once C.Then D.Besides 4A.gardening B.cooking C.telephone D.Internet 5A.missed B.hated C.abandoned D.ignored 6A.serve B.refer C.present D.relate 7A.bytradition B.byforce C.byexample D.bychance 8A.Yet B.Even C.Thus D.Still 9A.useful B.simple C.specific D.interesting 10A.struck B.disappeared C.melted D.passed 11A.clearup B.tearup C.buildup D.speedup 12A.priceless B.useless C.weightless D.colorless 13A.valued B.prepared C.preserved D.desired 14A.eventually B.definitely C.simply D.totally 15A.obtained B.discovered C.measured D.observed 16A.happiness B.willingness C.wisdom D.freedom 17A.Love B.Passion C.Insistence D.Motivation 18A.sharing B.offering C.following D.experiencing 19A.desire B.concern C.preparation D.appreciation 20A.purchase B.order C.expect D.evaluate
TopMusicFestivals Festivalseasonisjustkickingoffandthereisalottolookforwardtointheupcomingmonths. FireflyMusicFestival Manypeoplehaven'tthoughtofgoingtoDelawareforasummervacationbutmid﹣Juneisagreattimetoplanthistripifyoulovemusic.Headlinersforthisyear'sshowareTheWeekendMuseTwenty﹣OnePilotsChancetheRapperandBobDylan. Date:June15﹣182017 Location:DoverDelawareUSA MusicType:Rock Price:＄79﹣＄2499 RoskildeFestival ThisDenmarkmusicfestivalhasbeenalocaltraditionsince1971.Therewillbeninestagesforthisyear'seventstohostgroupsliketheFooFightersBlink182andTheLumineers.What'sinterestingaboutthisfestivalisthatinadditiontothebigheadlinersyoucanalsogettoknowup﹣and﹣comingregionalartistsfromDenmarkSwedenandNorway. Date:June24﹣July12017 Location:RoskildeDenmark MusicType:Rockemergingregionalartists Price:DKK995﹣DKK1995around＄144﹣＄289 SecretSolstice WithlongdarkandcoldwintersnobodycelebratessummerquitelikeIcelanders.ToseeforyourselfplanatriptoIcelandthisJunetocheckouttheSecretSolsticefestival.NotonlywillyouenjoyseeingbandslikeRadioheadandAfrikaBambaataabutyoucanalsoexperiencetheother﹣worldlylandscapesandgeothermal地热的springsnearbyaswell. Date:June15﹣182017 Location:ReykjavikIceland MusicType:EclecticIndie Price:€149﹣€1599around＄160﹣＄1725 MontrealJazzFestival AlljazzloversoweittothemselvestocheckouttheMontrealJazzFestivalatleastonceinalifetime.ThiseventbringstogethersomeofthebestnamesinjazzmusicaswellasdiverseR&Bfunk骤停打击乐andsoulartists. Date:June28﹣July82017 Location:MontrealQuebecCanada MusicType:JazzR&BSoulFunk Price:＄27.25﹣＄210.25 1Whatiscommontothemusicfestivalsmentionedinthetext? A.TheyareheldinEurope. B.Theirmusictypesarerockandhip﹣hop. C.Theyaregivenintheopenair. D.Theytakeplaceinsummer. 2WhatcanweinferaboutDelawarefromthetext? A.Itisthecityofmusic. B.Itisnotasummerdestination. C.ItisthehomeofBobDylan. D.Itisacityofhighexpense. 3WhatisthepurposeofIcelanderstoholdtheSecretSolsticefestival? A.Towelcomesummer. B.Tomemorizethepastwinter. C.Tocelebratethecomingofspring. D.Toadvisethelocalbeautifullandscapes.
WhenMr.WangaChinesecalligraphy书法masterandpainterinvitedmetohisstudioIgotextremely1delight.Whatatreat! Hisapartmentdoublesashisstudio2hecreatescalligraphyworksandpaintingsaswell.Thelivingroomhasalongdeskwithacollectionof3brushofvaryingsizestwobiginkpotsandapairofpaperweights. Mr.Wangshowedhislatestworkascroll卷轴oftheGreatWallatBadaling4winditswayalongthesteephillswhich5recognizeasaWorldHeritageSitebytheUnitedNationsin1987.Thebeautyoftheseven﹣meter﹣longscrollpaintingwasbeyond6describe. Hetoldmesomeonehadofferedalargeamountofmoneyforthepaintingbutherefused7partwithitashewantedtodonatetotheNationalMuseum. AfterthatMr.WanginvitedmetopracticecalligraphyanditwasthefirsttimethatIhad8trueexperiencedthebeautyoftheline.Itwasthen9InoticedMr.Wangappearedtohaveahealthybody.Iwonderedifpracticingcalligraphykepthimsofit.Whetherthatistrueonethingiscertain;asMr.Wangput10Onlydoonethinganddoitwell﹣﹣﹣that'sthesecrettosuccess
Earlierthismonthastudyshowedthatbeescanteachthemselvestoplayfootball.Theycanlearnbywatchingandratherthancopywhattheyhaveseenchangeittomakeitbetter.Beesalsohaveaclevertrickforhelpingtheirfriendsfindlunch.Newresearchshowsthatbeesleavesmellylittlefootprintsonflowersthathelpthemknowwhatflowerstheyandtheirfamilymembershaverecentlyvisited. ThediscoverywasmadebyscientistsfromUniversityofBristolwhoreportthesesmellyfootprintshelpbeesdistinguishbetweentheirownscent气味thescentofarelativeandthescentofastranger.Andbyusingthisabilitybeescanimprovetheirsuccessatfindinggoodsourcesofafoodandavoidflowersthathavealreadybeenvisitedandminedofnutrients. TheBristolteamperformedthreeseparateexperimentswithbumblebees大黄蜂inwhichtheywererepeatedlyexposedtorewardingandunrewardingflowersatthesametimethathadfootprintsfromdifferentbeesattachedtothem.Eachflowertypeeithercarriedscent﹣marksfrombumblebeesofdifferingrelatednessorwereunmarked.Themarkswereeitherthebee'sownmarkssistersfromtheirnestorstrangersfromanothernest. Thestudyshowsthatnotonlycanbumblebeestellthemarksoftheirownnestmatesfromstrangersbuttheycanalsodiscriminatebetweenthesmelloftheirownfootprintsandthoseoftheirnestmatesisterswhichcouldhelpthemtorememberwhichflowerstheyhavevisitedrecently.Butitdoesn'texplainhowtheyusethatinthewild.Theymaydetectthefootprintsoftheirfriendsandkeepmovingonsincethatflowermaybetappedout.Ortheymaysmellabitoffamiliarfootsmellanddiveinseeingitasamarkerthatnectar花蜜ispresent. 1WhatcanweinferaboutbeesinParagraph1? A.Theyaresmartlearners. B.Theyhavestrongfamilyties. C.Theyenjoysmellyfootprints. D.Theylikeplayingtricksonothers. 2WhatdoesthisabilityinParagraph2referto? A.Findinggoodsourcesoffood. B.Followingotherbees'footprints. C.Tellingthesmellsoffootprintsapart. D.Recognizingdifferenttypesofflowers. 3Whatcanwelearnfromthefindingsoftheexperiments? A.It'seasierforBumblebeestorecognizetheirfriends. B.It'sunclearhowbumblebeesusetheirabilityinthewild. C.Bumblebees'memorycanbesignificantlyimproved. D.Bumblebees'footprintscangivethemasenseofidentity. 4Whatisthemainideaofthetext? A.Differentflowersattractdifferentbees. B.Beeshaveanewtrickofsurvivinginthewild. C.Bumblebeesmaysmellfootprintstokeeptrackoffood. D.Bumblebeescangiveoffuniquescentstoattractothers.
FourTipsforHighSchoolGraduates Overthree﹣millionhighschoolstudentsaregraduatingthisspringintheUnitedStates.Manyofthemwillheadtouniversityinthefall.Thetransition过渡fromhighschooltocollegeisamajoroneandsuccessfuladjustmenttocollegehaslifelonginfluences. Maybeyouareabouttomakethistransitionyourselforhavechildrenwhoareabouttoleavethenest.1Ifyouknowsomeonewhoismakingthistransitionorknowparentsguidingtheirsoon﹣to﹣beadultkidsthroughthistimepleasetakeamomenttosharethiscollectionofresearch﹣basedtipswiththem. Beopentomakingnewfriendsassoonasyousetfootoncampus.Evenduringorientation迎新会!2Yoursuccessincollegedependsinpartonsurroundingyourselfwithotherswhocansupportyouandhelpyouhavefun. 3Successfuladjustmentisaboutreachingoutforhelpwhenyouneedit.Thismeanstryingtofindtheanswersonyourownfirstbutthencontactingthosewhocanhelpyouwhenyoucan't.Thatiswhattheyaretherefor! Leanonyourfamily.Familysupportcangiveyoucomfortwhenclassesgethardoryouarestressedaboutfinals.4Strongsupportfromfamilyislinkedtolowerlonelinessanddepressionduringthefirstyearofcollegeandhigheracademicadjustmentincludingmotivationandconcentration. Beconfident.Feelinganxietyaboutcommunicatingwithfellowsprofessorsandspeakingupinclassisassociatedwithloweradaptationduringthetransitiontocollege.Oneofthebestwaystoincreaseyourcommunicationconfidenceistopractice!5 A.Thislistisforyou. B.Themoreyouspeakupinclasstheeasieritbecomes. C.Don'tbeafraidtotalktoyourprofessorsorteachingassistants. D.Joiningclubsisalsolinkedtofeelingsofbelongingatcollege. E.Yourprofessorsandteachingassistantswanttoseeyousucceedintheirclasses. F.Almosteveryoneisinthesameboatasyouarehopingtomakefriendsquickly. G.Familymemberscangiveyouadviceandhelpyousolveproblemsifyouneedhelp.
TheCreatorofMiddleEarth JohnRonaldReuelTolkienbetterknownasJ.R.R.Tolkienwasbornin1892inSouthAfrica.Hisparentshadmovedtherelookingfor1betterjobforhisfather.Threeyears2latehismothertookhimonatriptoEnglandtovisitfamily. Whiletheywereawaytheyreceivedterriblenewsthathisfatherhaddied. 3growupwithoutafathermusthavebeendifficultforTolkien.Worsestillwhenhewasonlytwelveyearsoldhismotheralsopassedaway.Asachildhehadagreatpassionforlanguageandin1908hewenttoOxfordUniversity4studylanguagesandliterature.In1915hejoinedthearmyandfoughtinthebattleagainsttheGermans.Butsoonhebecametooilltofightandreturned5Englandthefollowingyear.Hedidn'thavea6satisfychildhoodhimselfsoaroundin1933storyofahobbit霍比特人hespentmuchtimetellinghischildrenfantasy7calledBilbo.Hefirstputitinwritingin19368turnedouttobeasurprisinghit. Thepublisheraskedhimtowriteanother.Hedidsoandin1948publishedTheLordoftheRingswhich9publishinthreevolumesbetween1954and1955. Tolkien10ageeighty﹣onediedin1973.
已知某种水果果皮红色H对黄色h为显性果肉酸味R对甜昧r为显性这两对相对性状的遗传遵循基因自由组合定律．现有基因型为HhRrhhrr的两个个体杂交其子代的表现型比例是
如图为中心法则图解其中表示翻译过程的是
已知函数fx＝ex1﹣ax﹣x2． 1求fx的单调区间 2若x≥0fx≤1求实数a的取值范围．
不科学的生活方式使得有“富贵病”之称的糖尿病患者日益增多．当糖尿病病情严重时通常需要注射的药物是
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