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下列不属于全球性生态环境问题的是（ ）
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高三上学期生物《》真题及答案
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全球性生态环境问题主要包括①全球性气候变化②水资源短缺③臭氧层破坏④酸雨⑤土地荒漠化⑥海洋污染⑦生物
①②③④⑤⑥⑦
②④⑥⑧
①③⑤⑦
①②③⑤⑥⑦⑧
全球性的生态环境问题指哪些回答8个以上30分
现在人们普遍认识到环境问题不止是局部或者是一个国家的问题需要全人类的共同努力那么下列哪项不属于全球性
酸雨
气候变暖
生物锐减
噪声污染
全球性生态环境问题主要包括变暖水资源短缺臭氧层破坏酸雨土地荒漠化海洋污染和生物多样性锐减等
荒漠化是全球性的最重大的生态环境问题
下列不属于我们需要关注的全球性生态环境问题是
温室效应
臭氧层破坏
酸雨
人口增多
我们只有一个地球它是人类共同的家园北京和纽约悉尼与伦敦相距万里然而生态环境问题不会中止在国或洲的边界
下列属于全球性的主要生态环境问题的是
农作物品种单调
人工林的病虫害严重
城市的“热岛效应”
酸雨
以下哪项不属于生态环境问题的特征
艰巨性
人文性
长期性
复杂性
下列哪项不属于国际社会最为关注的全球性大气环境问题
全球变暖
臭氧层遭破坏
光化学烟雾
酸雨危害
全球性生态环境恶化的根源是什么
下列环境问题中不属于全球性的环境问题的是
水土流失
酸雨
全球气候变暖
臭氧层的破坏
全球性的生态环境问题指哪些
不属于全球性环境问题的有
气候变暖
臭氧层破坏
土地荒漠化
环境污染事件
人类正面临着许多全球性生态问题保护生态环境已刻不容缓请分析回答下列问题据测定1985~1996年地球
人类活动与生态环境息息相关下图是部分全球性生态环境问题分布图读图完成下列问题1厄尔尼诺现象对南美洲西
2013年年初我国大部分地区出现雾霾天气近年来许多城市天空愈加浑浊霾日天数逐年上升这对人体健康和生态
以下哪一项不是全球性生态环境问题
粮食危机
海洋污染
生物多样性锐减
臭氧层破坏
以下哪项不属于生态环境问题得特征
艰巨性
人文性
长期性
复杂性
全球性生态环境问题越来越引起人们的关注它关系到人类的生存与可持续发展下列选项中不属于全球性生态环境问
金融危机
土地荒漠化
温室效应
水资源短缺
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Theweatherisfineanditispossibleforustogoforanoutingnextweek.同义句转换 →Thefineweatherustogoforanoutingnextweek.
fortunateIwon'tbeabletoattendyourbirthdaypartytomorrow.
EveryyearinthemonthofMarchoneof1theworld'sgreatestwildlifemigrations迁徙stopsincentralNebraska．Forashorttimesandhillcranes沙丘鹤fi11thestate'swideflatfields．Thelandprovidesthebirds2withtheperfectplacetorestandeat． Sinceseveralyearsagomoreandmorepeople3havediscovereddiscoverthemigration．Visitorscrowdintoriverblinds﹣specialbuildingsthathelpkeepthebirdwatchers4hidinghidethemselves．Theylookthroughtheircamerasortelescopesinwonder． Thesandhillcranesareworththetrip．Theyare5generallygeneralalittleoverametertall．Theyhavelonglegsandnecks．Theirwingsstretchovertwometers．Sandhillcraneshavesoftgreyfeathers．They6areknownknowforhavingabrightredareaonthetopoftheirheads． ThebirdsstopinNebraskaastheymaketheirwayfromtheirwinterhomesinMexicoandsome7southernsouthpartsoftheUnitedStates．Thebirdsusuallyspendtwotothree8weeksweekatthisplace9beforetheyleave．Theyarriveinwavesattimesasmanyas400000inoneday．Theyeatinthenearbyfieldsandgrasslands．Leftovergraininsectsandsmallcreaturesgive10themtheytheenergytheyneedastheycontinuetheirtripnorthtowardCanadaandSiberia．
Shedoesn'tknowhowtobehave举止得体inpublic．
AKenyanteacherwhogaveaway．mostofhismonthlysalary工资topoorpeoplehaswona﹩1﹣millionGlobalTeacherPrize． In2016PeterTabichicametoKerikoMixedDaySecondarySchoolapublicschoolinafarawayKenyasRiftValley．TheschoolhadjustasinglecomputerandhadproblemsconnectingtotheInternet．Ithadnolibraryorlaboratoiryaswell．Tomakemattersworsethestudentscamefrompoorfamilieswherebasicslikefoodandclothingwerehardtocomeby．WhilethesedifficultieswouldhavecausedmostpeopletoleavequicklyTabichistayed． Realizingthatstarvingkidsmakeforpoorstudentstheteacherbeganusingasmuchas80percentofhismonthlysalarytobuyfoodandlearningobjectsforthem．Hesetupascienceclubtogetkidsinterestedinthetopic．OurlaboratorydoesnothaveeverythingbutIencouragethemtothinkwiderandusewhatwecangetlocally． Tabichiandotherfourteachersregularlyvisitlow﹣achievingat﹣riskstudentsattheirhomestoprovideone﹣on﹣onehelpandtounderstandthedifficultiesthesechildrenfacedaily．Tabichialsoencouragesparentstoallowgirlstocontinuetheirhigh﹣schooleducation． Tabichi'seffortshavemadeadifference．Schoolregistration注册hasmorethandoubledtoalmost400nowsincehecame．In201716ofthe59graduatingstudentswenttocollegewhilein2018thenumberroseto26．In2017fivestudentsqualified有资格fortheIntelISEFInternationalScienceandEngineeringFair．Thisyeartwootherstudentswillcompeteinthe2019IntelISEFtobeheldinPhoenixArizona． Theteacherhoweyetoweshissuccesstohisstudentssaying．Iamonlyherebecauseofwhatmystudentshaveachieved．Thisprizegivesthemachance．Ittellstheworldthattheycandoanything．AswouldbeexpectedTabichiplanstospendtheprizemoneyonhisschoolcommunityandtofeedthepoor． 1WhatisthetextmainlyaboutB A．AschoollocatedinaKenya'sRiftvalleybecamefamous． B．AKenyanteacherhelpingpoorstudentswonGlobalTeacherPrize． C．AKenyanteacherhelpedgirlstocontinuetheirhigh﹣schooleducation． D．FiveKenyanstudentsqualifiedfortheIntelISEFfortheirperformance． 2WhatcanweknowaboutKerikoMixedDaySecondarySchoolD A．Ithaddozensofteachers． B．Itwasintheofacity． C．Itownedamodemlab． D．Itwasinpoorcondition 3WhichwordcanbeusedtodescribePeterTabichiC A．Honest． B．Wealthy． C．Kind． D．Humorous． 4WhichistheclosestnumberofstudentswhenPeterTabichibeganteachingthereB A．90． B．190． C．290． D．390．
2019年世界园艺博览会于4月29日至10月7日在北京举行．假定你是李华你打算邀请交换生Frank去参观．请用英语给他写封邮件内容包括 1．邀请他的原因 2．行程安排如时间住宿交通等． 注意1．词数12左右 可适当增加细节以使行文连贯 3．开头和结尾已给出不计入总词数． DearFrank I'mwritingtoinviteyoutovisitthe2019BeijingInternationalHorticulturalExhibition．______ Lookingforwardtoyourearlyreply． Yours LiHua
Thelawyeraswellassomeofhisassistantsinvitetoattendthedebatelastweek.
PlayingcomputergamesalldayTom'sbrotherwastedhertimeandfailedtheexam.
ChoosingAMusicalInstrument Manypeoplewouldliketolearnhowtoplayamusicalinstrumentbuttheyareputoffbyonebigproblemwhattoplay?1 Whatkindofmusicdoyoulike? Manyinstrumentsaresuitableforallmusicbutsomearemoresuitedtocertaintypesofmusic.Takesaxophoneforexample.Peopleconnectitmorewithjazzanditisnotalastingfeatureofmanyorchestras.2Thereforeconsiderthisbeforeyoustart.3 Manypeopleliveinflatsandpracticingthedrumsforexamplewilldriveyourneighborscrazy.Thinkaboutwhereandwhenyouaregoingtopracticeaswellastheofthepeopleyoulivewithornear.Ifnotyoumayneedtoconsidergoingtoaschooloracommunitycentretopractice. Howmuchmoneycanyouspend? Thisisquiteabigproblem.4Thisdoesn'tchangethefactthatmanysuchasthepianoarealwaysprettyexpensive.Ifyoucan'taffordyourchoseninstrumentwillbeabletoborrowsomeoneelse'sorhireone? Arethereanyphysicallimitations? Ifyou'resmallanddon'tlikeliftingheavyobjectsyouwon'twanttocarryaroundadoublebass.Apartfromthatuseyourcommonsense.5It'struethatsomewindinstrumentsrequirealotoflungpower.Youmustknowitbeforeyoucometoit. Ifyoufindaninstrumentyouloveandthatsuitsyourneedsyou'llfindthetimespentchoosingwaswellworthit.Goodluckwithmakingyourchoice! A.Whereareyougoingtopractice? B.Iwouldliketosharesomeideaswithyou. C.Whatkindofneighborscanyouplaywith? D.Hereareafewquestionstohelpyoudecide. E.Alotofinstrumentscanbeboughtatdifferentprices. F.Anddon'tletyourobviousphysicalshortcomingsputyouoff. G.Someinstrumentsmaylendthemselvesbetterthanotherstothemusic.
中国海军航母建设正在有计划有步骤向前推进第一艘国产航母目前正在进行海试．建造航母需要大量的新型材料．航母的龙骨要耐冲击航母的甲板要耐高温航母的外壳要耐腐蚀．1镍铬钢抗腐蚀性能强Ni2+基态原子的核外电子排布为铬元素在周期表中区．2航母甲板涂有一层耐高温的材料聚硅氧烷结构如图1所示其中C原子杂化方式为杂化．3海洋是元素的摇篮海水中含有大量卤族元素．①根据下表数据判断最有可能生成较稳定的单核阳离子的卤素原子是填元素符号②根据价层电子对互斥理论预测ClO3﹣的空间构型为形写出一个ClO3﹣的等电子体的化学符号．4海底金属软泥是在洋海底覆盖着的一层红棕色沉积物蕴藏着大量的资源含有硅铁锰锌等．如图2是从铁氧体离子晶体Fe3O4中取出的能体现其晶体结构的一个立方体则晶体中的离子是否构成了面心立方最密堆积填是或否该立方体是不是Fe3O4的晶胞填是或否立方体中铁离子处于氧离子围成的填空间结构空隙根据上图计算Fe3O4晶体的密度为g•cm﹣3．图中a＝0.42nm计算结果保留两位有效数字
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Sometimesalittlenegativeself﹣talkisnotabadthing.Howevertoomuchofitmayaffectyourbrain﹣andyourlife.Itremindsyouofallyourfaultsandmistakes. ProfessorGeorgeHughesdoesresearchonhowthemindcontrolsbehavior.Hesaysnegativetalkcanaffectourcareerandfamilylife.Hesawthiswhileteachingatacommunitycollege.Hewonderedwhysomestudentswhostudiedhardstilldidpoorlyinexams.Theymaysufferfromtestanxiety. Whyaretheyundersuchgreatpressure?Theyunderstandthatiftheygetgoodgradesinexamstheywillhavebettercollegestoattendandevenbettercareersinthefuture.Hughesexplainsthatfailingseveraltestscanaffectastudentsconfidence. Hughesusedoneofhisstudentsasanexample.Lindsayactivelytookpartindiscussionsanddidallofherhomework.Butsheperformedbadlyinexams.WhenHughesaskedherhowshefeltbeforeatest.shetoldhimshewasverynervous.Shewonderedwhyshehadtroublerememberingwhatshehadstudied.Shedidn'ttrustheranswer. HughesturnedLindsay'snegativestatementsintopositivequestions.BeforeatesthetoldLindsaytosaytoherselfWhyamIsorelaxedwhenItakeanexam?WhydoIremembereverythingIstudyforanexam?WhydoItrustmyanswers? LindsaytookhisadviceandearnedaBonthefinalexaminHughes'class.Thenshewasadmittedintoafour﹣yearuniversity.Shecontinuedtousethemethodofpositiveself﹣talkandgotstraightAsinallofherexams. Hughessawstudentafterstudentsucceedwithhismethod.Sohedecidedtobookaboutthesubject.HisbookiscalledChangeYourGradesChangeYourLife. 1Whatmaynegativeself﹣talkinfluence? A.Yourfaults. BYourhomework. C.Yourdiscussions. D.Yourbehavior. 2WhyaresomestudentssonervousabouttheirstudyaccordingtoHughes? A.Theybecomeunconfidentafterfailingsomeexams. B.Theyunderstandtheimportanceofexams. C.Theyareverytiredfromstudyinghard. D.Theyoftentalktoomuchnegatively. 3WhatdidHughesteachhisstudentstodobeforetests? A.Tokeepthemselvesrelaxed. B.Toremembereverythinginbooks. CToquestionthemselvespositively. DTotrusttheiranswers. 4WhatfinallymadeHugheswritethebook? A.Manystudents'difficultiesintheirstudy. B.Manystudents'successwithhismethod. C.Hisgreatinterestinthesubject. D.Hisenthusiasmforhiscareer.
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Withoutawarningtheelectricitywascutoff切断thismorningwhichmadehimveryupset．
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SignsofaTrueFriendship Truefriendsarerare．1D．HowcanyoutellatruefriendHereareseveralobvioussignsofafriendship． 2A． Atruefriendisareliablepersonandyoucanhaveconfidenceinhim．Youknowthathewillhotbetray背叛youorsaysomethingbadaboutyoubehindyourback．Youknowthattheinformationyousharewithoneanotherwillnotbesharedwithothers． Keepingintouchwitheachotherfrequently 3G．Truefriendsoftenkeepintouchwitheachotherwhetherbyphonesocialnetworkingsitesemailorin﹣personmeetings． Givingwithoutpayingback Truefriendsgivewithnoexpectationsofreceivinganythinginreturn．Realfriendsgivetheirtimeloveandcarewithoutexpectingtoreceiveanythingback． Supportingeachother Truefriendshipsinvolve涉及twopeoplewhosupporteachothernomatterwhathappens．Itcanbedifficulttoknowhowtohelpafriendwho'sfacingadifficultsituationthough．Callhimevenifyoudon'tthinkhewillanswerthephoneandleaveanencouragingmessagehecanlistentolater．4EOrsendhimanemaillettinghimknowthatyou'rethereforhimifheneedsanything． Acceptingeachother Realfriendsaccepteachother．Arealfriendacceptsyouforwhoyouarewhetheryouaretallorshortgentleorrude．Arealfriendmayinspireyoutobeabetterperson．5F． A．Believingineachother B．Sharingwitheachother C．Youcanexpressyourfeelingsfreely D．Andyoumayhaveonlyafewtruefriendsinyourlife E．Sendanencouragementcardtoyourfriendwhenheisintrouble F．Howeverhewillnottrytochangeyouintothepersonhethinksyoushouldbe G．It'sdifficulttomaintainatruefriendshipifyouhardlycommunicatewitheachother
Booksnotonlyequipuswithknowledgebutalsotheybroadenourhorizons.用倒装句改写 →
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