简介：从前，有五个兄弟——约翰、杰克、詹姆斯、汤姆和杰克逊。每年他们母亲的生日时，他们都要送给她贵重的礼物。他们喜欢向她显示自己的富贵和成功。

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简介：一、故事内容Itisgettinghotterandhotterdaybyday.Sothebirdsdon＇toftenflyintheskyindaytime.Theyusuallyflyintheeveningtolookforfood.ButabirdnamedPollyisverynaughty.Hejustknowshowtofly,sohewantstoflyeveryday.Oneday,whenheisflyingintheforest,hefeelsverythirsty.Heisverylucky.Heseesabottlenearabigrock.Thereissomewaterinit.Sohecomestothebottleandstandsnexttothebottle.Buthecan＇tdrinkthewater,becausethebottle＇sneckisverylong.Hethinksitoverandthenfliesaway.

简介：假设你是学校广播站英文节目的编辑．请按照下面图画所示内容．用英语写一篇广播稿．向同学们介绍在发生禽流感疫情的情况下应采取的一些预防措施。

简介：谁说你不能改变世界，4月22日是世界地球日（theEarthDay），为了这个意义特殊的日子，你选择如何行动？

简介：Manypeoplearefrightenedbyspiders(蜘蛛).Theyareespeciallyafraidoflarge,hairyones.Thelargestandmostfrighteningofallisthebird-eatingspider,whichlivesinthehot,thickrainforestsofnorthernSouthAmerica.

简介：1.alittlebird消息灵通的人2.killtwobirdswithonestone一举两得3.eatlikeabird饭量很小4.givesb.thebird喝倒彩5.forthebirds荒唐可笑的6.Thebirdhasflown.要抓的人跑了。

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简介：Dalingheornisliweii情报。etsp。nov，一只新enantiornithine鸟在东北中国从早白垩纪Yixian形成被收集。它是在中生代鸟中的一只高度专业化的异种扬抑抑格脚的第一个记录。有shorthypocleidum的塑造Y的叉突与另外的enantiornithines的不同。未成年者掌部比专业柔韧、长掌部。一条长多骨的尾巴与dromaeosaurids并且这样类似于那些的V形臂章20尾的vertebrae创作了，再加亮在鸟和非鸟的theropods之间的进化关系。保存得很好的小翼羽毛和一只异种扬抑抑格脚为Dalingheornis的树木的习惯提供充分证据。

简介：霍尔先生爱护自己的兰色小汽车，他总是将它洗刷得干干净净，常常进行检查。于是小汽车也回报他的善意，从不在路上抛锚。

简介：Anyonefollowingtheprogressofroboticsfieldsforaerial,underwaterorgroundapplicationsappreciatestheimportanceoflearningofgooddesignfromnature.Theemerging

简介：Background:Theglobaldecreaseinwildlifepopulations,especiallybirds,ismainlyduetolandusechangeandincreasingintensityoflanduse(ParmesanandYohe2003).However,impactsofmanagementtoolstomitigatebiodiversitylossatregionalandglobalscalesarelessapparentinforestregionsthathaveaconstantforestarea,andwhichdidnotsufferfromhabitatdegradation,andwhereforestsaresustainablymanaged,suchasinCentralEuropeorthenortheasternUSA.AbiodiversityassessmentforGermanysuggested,forexample,thatbirdpopulationswereconstant(BundesamtfürNaturschutz2015).Results:Thisstudyshowsthatchangesintheenvironmentandinforestmanagementoverthepast45yearshavehadasignificant,positiveeffectontheabundanceofnon-migratoryforestbirdspeciesinCentralEurope.Economy(timberpricesandGDP),forestmanagement(timberharvestandmixedforestarea),andenvironmentalfactors(atmosphericCO2concentrationandnitrogendeposition)wereinvestigatedtogetherwithchangesinabundancesofmigratoryandnon-migratoryforestbirdsusingpartialleastsquarespathmodeling.Climatechange,resultinginlongerseasonsandmilderwinters,andforestmanagement,promotingtreediversity,weresignificantlypositivelyrelatedtotheabundanceofnon-migratoryforestbirdsandexplained92%ofthevariationintheirabundanceinEurope.Regionally-migratingforestbirdshadstablepopulationswithlargevariation,whilebirdsmigratingacrosscontinentsdeclinedinrecentdecades,suggestingsignificant,contrastingchangesinbirdpopulationsinEurope.InnortheasternNorthAmericawealsofoundevidencethatnon-migratoryforestshaveexperiencedlong-termincreasesinabundance,andthisincreasewasrelatedtomanagement.TheincreaseofpopulationsofnonmigratoryforestbirdsinEuropeandNorthAmericaisassociatedwithanincreaseinstructuraldiversityanddisturbancesatthelandscapelevel.Conclusions:Ourresultssuggestthatreportsaboutbirddecline

简介：Anovelbirdnest-likenanostructuredMnO2(BNNS-MnO2)waspreparedbyafacileandcost-effectivestrategy.Theirstructuresandmorphologieswerecharacterizedbyfieldemissionscanningelectronmicroscopy,transmissionelectronmicroscopyandpowderX-raydiffraction.Capacitivebehaviorswereinvestigatedbycyclicvoltammetryandgalvanostaticcharge-discharge.Theobtainednano-MnO2possessesawelldesignedloose-assembledhierarchicalnanoarchitecturewithanappropriatecrystallinitywhichgivesrisetoexcellentperformancesasanelectrodematerialforsupercapacitors.Amaximumspecificcapacitanceof917F/ghasbeenobtainedatacurrentdensityof5mA/cm2in6mol/LKOHaqueoussolution,andaspecificcapacitanceof210F/ghasbeenmaintainedfor500cycles.AsthelowcostofMnSO4andKCr2O7andthelowreactiontemperature,thepresentmethodavoidstherequirementsforcomplicatedoperations,time/energy-consumingandexpensivereagents,andperhapsisreadyfortheindustrializationofnano-MnO2production.

简介：BirdcommunitiesweresurveyedinnaturaldeciduousforestofbothslopeareaandvalleyareaatMt.Gyebangsan(37°40'30"N,128°30'1"E),GangwonProvince,SouthKoreainwinter,spring,summerandautumnfromSeptember2000toNovember2001.Theinvestigatingresultsshowedthatthereexisteddifferencesinthebirdspeciescomposition,richness,birdspeciesdiversity,guildstructurebetweenslopeareaandvalleyarea,andtheverticalforeststructure,especiallycoverageofunderstory,anddiameteratbreastheight(DBH)distributionalsohadsignificantdifferencebetweenthetwostudyareas.Thedifferencesinhabitatstructurebetweentheareasareverylikelytohaveinfluencesonhowbirdsusedtheavailablehabitat.

简介：塔兰图拉毒蛛毒液为学习毒素选择，结构活动关系和肽毒素的分子的进化提供一个模型系统。以前的研究鉴别了中国鸟的毒液地的很多肽毒素搜寻Haplopelmahainanum，通常认为是一只高度有毒的蜘蛛。然而，可得到的RNA-seqtranscriptomic的缺乏和genomic数据是到在分子的水平理解它的毒液的一个障碍。在这研究，我们调查了H的毒液腺transcriptome。由RNA-seq的hainanum，当一个可得到的genomic序列不在时。我们鉴别在57181denovo之中的201潜在的毒素装配了抄本，包括knottins，Kunitz类型毒素，酶和另外的蛋白质。我们系统地识别了大多数knottins和Kunitz类型毒素，其中一些强烈出现了，在毒液腺偏导表示包括huwentoxin-1的成员，huwentoxin-2和magi-1家庭。我们也发现了几新奇潜在的毒素。这些数据在H的毒液毒素表明高分子、结构的差异。hainanum。这研究为探索蜘蛛毒液的复杂部件提供有用策略。

简介：Paraprotopteryxgracilis，从在Fengning的早白垩纪Yixian形成的一只新enantiornithine鸟，北Hebei省被树立，基于下列人物：有长hypocleidum和大部分的塑造Y的叉突狭窄内部胸骨的锁骨的角度，和形态学与另外的enantiornithines不同。另外，忍受最大的用手的爪的翼膜的位远侧地延长到专业的远侧的目的掌部；未成年者掌部比专业苗条掌部。仅仅近似地熔化的Carpometacarpus；部分熔化到对方的距骨和calcaneum但是unfused到胫骨。这是在有四长消遣瞬间的中生代鸟的第一个记录，它可以词法上代表一个第二等的性人物，从伸长的规模的一个中间的阶段到分叉在补充上升表面补偿不熟练的飞行羽饰，并且拥有功能的优点。

简介：【教材简解】本单元的核心教学内容是"询问物品的位置"。要求学生在一定情景下能正确使用核心句型Where’s...?It’s....进行交谈。Storytime共有七个场景,主要描述小鸟停在教室里的不同位置。在对话中出现了本单元的重点句型,即询问及回答地点。教学应与日常生活联系起来,培养学生的主动性思维和与人交流的能力。【目标预设】1.能初步感知新的语言知识:(1)单词:abird,adesk,achair,in,on,under,behind

简介：InFebruary2006,twooutbreaksofhighlypathogenicavianinfluenzaAvirussubtypeH5N1occurredinchickensintwoneighboringdistricts(firstinNandurbarandsecondinJalgaon)ofMaharashtra,India,inaspanof12days.Inthepresentstudy,theneuraminidase(NA)geneofthetwoIndianH5N1isolateswastakenintoconsiderationtofindifthetwostrainsaregeneticallysimilar.PhylogeneticanalysisoftheNAgeneshowedthattheH5N1strainsisolatedfromthetwooutbreakswerenotoriginatedfromthesamesource.ThefirstIndianisolate(Nandubar/7972/06)wasclusteredclosesttoanisolatefromchickeninVietnamin2004,whereasthesecondIndianisolate(Jalgaon/8824/06)showedresemblancetostrainsisolatedfromswaninItalyandIranin2006.Moreover,aminoacidsequenceanalysisshowedvaryinghotspotsforsubstitutionsbetweenthesetwoIndianisolates,andthreesubstitutionswerefoundatfunctionaldomainsites.Secondarystructurechangesduetothesesubstitutionswerealsoreported.ThisstudyrevealsthattheH5N1strainsisolatedfromchickensduring2006birdfluoutbreaksintwoneighboringdistrictsofMaharashtra,Indiaaregeneticallydifferent.