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某赛季甲乙两名篮球运动员各6场比赛得分情况如表： 则下列说法正确的是（ ）
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某赛季甲乙两名篮球运动员12场比赛得分情况用图表示如下对这两名运动员的成绩进行比较下列四个结论中不正
甲运动员的得分平均数大于乙运动员的得分平均数
甲运动员得分的的中位数小于乙运动员得分的的中位数
甲运动员得分的极差大于乙运动员得分的极差
乙运动员的成绩比甲运动员的成绩稳定
右图是某赛季甲乙两名篮球运动员参加的每场比赛得分的茎叶图则甲乙两人这几场比赛得分的中位数之和是
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某赛季甲乙两名篮球运动员12场比赛得分情况用图表示如下对这两名运动员的成绩进行比较下列四个结论中不正
甲运动员得分的极差大于乙运动员得分的极差
甲运动员得分的的中位数小于乙运动员得分的的中位数
甲运动员的得分平均数大于乙运动员的得分平均数
乙运动员的成绩比甲运动员的成绩稳定
某赛季甲乙两名篮球运动员都参加了10场比赛比赛得分情况记录如下单位分甲372131202919322
某赛季甲乙两名篮球运动员都参加了11场比赛他们每场比赛得分的情况用如图所示的茎叶图表示则甲乙两名运动
19、13
13、19
20、18
18、20
右图是某赛季甲乙两名篮球运动员每场比赛得分的茎叶图则在这几场比赛得分中甲的中位数与乙的众数之和是
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78
某赛季甲乙两名篮球运动员都参加了11场比赛他们所有比赛得分的情况用如右图所示的茎叶图表示则甲乙两名运
19,13
13,19
20,18
18,20
某赛季甲乙两名篮球运动员12场比赛得分情况用图表示如下对这两名运动员的成绩进行比较下列四个结论中不正
甲运动员得分的极差大于乙运动员得分的极差
甲运动员得分的中位数大于乙运动员得分的中位数
甲运动员的得分平均数大于乙运动员的得分平均数
甲运动员的成绩比乙运动员的成绩稳定
已知某赛季甲乙两名篮球运动员每场比赛得分的茎叶图如图所示则
甲篮球运动员比赛得分更稳定,中位数为26
甲篮球运动员比赛得分更稳定,中位数为27
乙篮球运动员比赛得分更稳定,中位数为31
乙篮球运动员比赛得分更稳定,中位数为36
某赛季甲乙两名篮球运动员12场比赛得分情况用图表示如下对这两名运动员的成绩进行比较下列四个结论中不正
下图是某赛季甲乙两名篮球运动员每场比赛得分的茎叶图则平均得分高的运动员是_____________
某赛季甲乙两名篮球运动员都参加了7场比赛他们所有比赛得分的情况用如图所示的茎叶图表示.Ⅰ你认为哪位运
某赛季甲乙两名篮球运动员12场比赛得分情况用图表示如下第9题对这两名运动员的成绩进行比较下列四个结论
）甲运动员得分的极差大于乙运动员得分的极差 （
）甲运动员得分的的中位数大于乙运动员得分的的中位数 （
）甲运动员的得分平均数大于乙运动员的得分平均数 （
）甲运动员的成绩比乙运动员的成绩稳定
某赛季甲乙两名篮球运动员都参加了11场比赛他们所有比赛得分的情况用如图所示的茎叶图表示则甲乙两名运动
右图是根据某赛季甲乙两名篮球运动员每场比赛得分情况画出的茎叶图.从这个茎叶图可以看出甲乙两名运动员得
31，26
36，23
36，26
31，23
某赛季甲乙两名篮球运动员12场比赛得分情况用图表示如下对这两名运动员的成绩进行比较下列四个结论中不正
甲运动员得分的极差大于乙运动员得分的极差
甲运动员得分的中位数大于乙运动员得分的中位数
甲运动员得分的平均数大于乙运动员得分的平均数
甲运动员的成绩比乙运动员的成绩稳定
某赛季甲乙两名篮球运动员都参加了11场比赛他们每场比赛得分的情况用如图所示的茎叶的图表示则甲乙两名运
19、13
13、19
20、18
18、20
右图是根据某赛季甲乙两名篮球运动员参加ll场比赛的得分情况画出的茎叶图.若甲运动员的中位数为a乙运动
如图是某赛季甲乙两名篮球运动员每场比赛得分的茎叶图则甲乙两人比赛得分的中位数之和是.
已知某赛季甲乙两名篮球运动员每场比赛得分的茎叶图如图所示则甲乙两人得分的中位数之和是
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油菜素内酯BR可提高水稻对真菌细胞壁成分为几丁质的抗性．为研究其分子机制科研工作者用BR对水稻进行了处理并检测了实验组和对照组水稻叶片几丁质酶的活性结果如图1所示同时提取了实验组和对照组水稻细胞中总RNA进行反转录并对其产物进行PCR后电泳处理结果如图2所示18S为参照．据图分析下列说法不正确的是
Thechoirrehearsal合唱排练oftheschoolyeartookplaceintheschoolhall.Allthestudents1 togethertosing.Iwatchedasmyeldersisterandhergradetooktheirplacesonthe2MeanwhileIcouldhearsomestudentslaughingand3atagirlnexttomysister.I'dneverseenthisgirlbefore.Agirl4inmyearDoyouknowshe's5diapers纸尿裤? AfterschoolthateveningIaskedmysisteraboutthegirlthatIsaw.ShetoldmehernamewasTheresaandthatshewasanicegirl.Whywerethosekidsbeing6toher?Iasked.Becausethey're7shesaid. OnedayIwaswalkinghomefromschoolwhenIheardvoicesbehindmeThere'sthelittleidiot's白痴的youngsister.Doesyoursisterwether8too?Iwalkedfasterandthenfeltastone9meintheback.WhenIgothomeIpushedmywayintoherroom10atherWhydoyouhavetobethatgirl's11?Idon'tseeanyoneelsebeing12toher.JanelleyelledbackBecauseshe'sawonderfulpersonandshe's13!Iwillrememberthosewords14Ilive.Theresawettedhertrousersbecauseshehadan15whichwaskillingher.Mysistertheonlyoneniceenoughtobeherfriendandstickupforher.Severalmonths16Theresa17. Ifelt18thatJanellewasmysister.Throughouttheyearsshealwaysmadefriendswitheveryone.Itdidn'tmatterwhethertheywerebrilliantornot?Sheneverleftanyonefeeling19.Itwasshewho20meandtaughtmenevertolookatanyoneinthesamewayagain. 1A.pulled B.joined C.lived D.crowded 2A.stand B.room C.stage D.bench 3A.pointing B.glaring C.aiming D.glancing 4A.threw B.yelled C.shouted D.whispered 5A.wearing B.dressing C.putting D.carrying 6A.kind B.friendly C.rude D.merciful 7A.interesting B.polite C.generous D.stupid 8A.trousers B.shoes C.socks D.coat 9A.beat B.hit C.blocked D.touched 10A.glaring B.screaming C.staring D.talking 11A.friend B.classmate C.singer D.teacher 12A.tough B.nice C.terrible D.cruel 13A.arriving B.approaching C.dying D.recovering 14A.atthesametime B.themoment C.aslongas D.assoonas 15A.problem B.dream C.kindness D.illness 16A.ago B.before C.away D.later 17A.diedout B.becamewell C.fadedout D.passedaway 18A.disappointed B.shamed C.proud D.ashamed 19A.wise B.alone C.awesome D.fearful 20A.changed B.scared C.developed D.improved
令人惊讶的是这个男孩非常熟悉加拿大的文化.主语从句familiar
玉米是我国第一大粮食作物．玉米腐霉茎腐病在我国广泛发生严重危害粮食生产安全相关研究具有重要的经济价值和社会意义． 1玉米对腐霉茎腐病表现出的抗病与感病为一对． 2观察发现玉米品种甲纯系对腐霉茎腐病表现为抗病品种乙纯系表现为感病． ①研究人员将品种甲与品种乙杂交得到F1再将F1自交得到F2．检测发现产生的F1全部为抗病产生的673株F2中626株为抗病47株为感病．F2中的抗病感病≈151因此可推知抗病与感病由染色体上的对基因控制． ②研究人员又对F2进行单株自交将每株收获的种子分别种植观察表现型．有的F2单株自交子代都为抗病有的F2单株自交子代都为感病有的F2单株自交子代既有抗病又有感病．若上述三种F2的比例为即可验证2①所得结论． 3进一步研究发现品种甲的抗病基因R1位于玉米1号染色体上．已知抗病玉米品种丙纯系的显性抗病基因Q也位于1号染色体上． ①在玉米1号染色体上的特定位置有分子标记如z263它在玉米的不同品系里的长度可能不同但起始和终止序列相同．类似的还有z459z319和z256．已知品种丙的Q基因与z263z459z319和z256紧密连锁不发生交叉互换．科研人员根据这几个分子标记的起始和终止序列设计分别以品种甲乙的基因组DNA为进行PCR扩增后电泳检测．下图所示实验结果初步说明R1与Q是填“相同”或“不同”基因判断依据是． ②科研人员将品种甲与品种丙杂交得到F1F1均表现为抗病．再将F1自交得到F2．F2出现感病植株直接验证3①的结论．推测F2出现感病植株的原因是只考虑R1和Q基因．
他采取了医生的建议:他应将均衡的饮食和有规律的锻炼相结合.同位语从句combine
Keepingadiaryisoneoftheuseful1waytoimproveourEnglishability. 2comparewithotherformsofwritingitisshorterandtakes3littletime.ItcanhelpustodevelopthehabitofthinkinginEnglish.Ifwepersistinthispracticegraduallywe'lllearnhowtoexpress4weinEnglish.WekeepadiaryinEnglish5canhelpusdealwithmanydifficulties.Inthefirstplaceitoftenhappensthatwehavetrouble6findproperwordsandphrasestogiveexpressionstoourmind.SecondlytherearemanyidiomaticwaysofsayingthingsinChinese.Andit's7extremehardforustoputthemintoEnglishproperly. ManyyearsagomyEnglishteachercameupwithasuggestionthateverystudent8haveanotebookandaChinese﹣Englishdictionarywithineasyreach.Wheneversomethingbeatsuswecanfirstputitdowninournotebookandthenconsultourdictionary.WecanalsoaskourEnglishteacherforhelpifnecessary.InshortIbelievethatitis9greatusetokeepadiaryinEnglishfor10developmentofourwritingskills.
下列有关细胞中化合物的叙述正确的是
如图为某同学设计的酿制苹果醋的基本流程图．回答下列相关问题 1若①过程先切块后清洗则会产生的结果②过程过滤前用酶处理苹果泥可以提高苹果的出汁率③过程发酵所用的徽生物是④过程是发酵需要将发酵装置中的充气口开关打开/关闭． 2某同学在实验时不小心把圆褐固氮菌和酵母菌混在一起．请根据两种菌的生理特性予以区分．如在培养基配制中用于培养圆褐固氮菌时用培养基用于培养酵母菌的培养基中可添加特有成分． 3制作果酒果醋泡菜和腐乳主要利用微生物的共同特征是．
如图为某植物的光合作用相关曲线及验装置图．图一反映了该植物的真正光合速率呼吸速率与温度的大致关系其中光合速率曲线I的光强为光饱和状态其他四条曲线的光强未达到光饱和点且ⅡⅢIVV曲线的光强依次减弱V的光强最弱．图二是研究天竺葵植株的生理变化装置图请据题意分析回答 1图一所示该植物真正光合作用的最适温度略低于/高于净光合作用的最适温度．25℃时Ⅱ曲线的净光合速率是用CO2的吸收速度相对值表示． 2若想利用图二中的装置研究呼吸作用则A瓶中可盛放试剂来检测呼吸作用的产物．若研究天竺葵光合作用的强度可以通过测定一定时间内来定量地表示． 3植物有木质部和皮部两个输导系统．韧皮部汁液中通常主要是蔗糖也有无机盐离子植物激素等．生长素是最早被发现和研究的植物激素在某些部位只能从形态学上端向形态学下端运输称为极性运输但是在成熟组织中生长素可以通过韧皮部进行．由于植物激素含量非常少提取困难人们成功合成了多种植物生长调节剂并在生产中得到广泛应用植物生长调节剂是指．
ThesuiciderateinAmericaisupby18%since2000.Thisisnotmerelyatragedy;itmatterspoliticallytoo.Theriseislargelyamongwhitemiddle﹣agedpoorlyeducatedmeninareasthatwereleftbehindbyboomsandcrushedbybusts.Theirdeathsareasymptomoftroublesthatshouldnotbeignored. NonethelessbeyondAmerica'sgloomytrendisamoreoptimisticstory:thatatagloballevelsuicideisdownby29%since2000.Asaresult2.8mliveshavebeensavedinthattime﹣threetimesasmanyashavebeenkilledinbattle.Thereisnoonereason.Itishappeningatdifferentratesamongdifferentgroupsindifferentplaces. Whyarepeoplenowlesslikelytotaketheirownlives?Urbanizationandgreaterfreedomhavehelped.AccountsofthosewhoattemptsuicideandoftherelativesofthosewhosucceedsuggestthatmanyyoungAsianwomenweredriventodespairbyviolenthusbandsandoverbearingin﹣laws.Aspeoplemovetocitiesandthegripoftraditionloosenswomenhavemorechoiceaboutwhomtheymarryorlivewithmakinglifemorebearable.Leavingthevillagehelpsinanotherwaytoo.Becausefarminginvolveskillingthingsruralfolkarelikeliertohavethemeanstokillthemselves﹣gunspesticides﹣tohand. Effortstocontrolaccesstothemeanstokilloneselfcanhelptoo.Suicideissurprisinglyimpulsive.AstudyofyoungChinesewomenwhohadtriedtokillthemselvesshowedthatthree﹣fifthshadbeencontemplatingsuicideforlessthantwohoursandoneintenforlessthanaminute.Of515peoplewhohadsurvivedtheleapfromSanFrancisco'sGoldenGateBridgebetween1937and197194%werestillalivein1978﹣whichsuggeststhatasuicidepostponedislikelytobeasuicideprevented. 1Whichisnotthereasonofsuicidedecreasing? A.Morefreedom B.Moreforcedmarriages C.Urbanization D.Morecontrolonmeans 2Wecaninferfromparagraph4that A.manypeopledecidedtokillthemselvesafteraseriousconsideration B.about484peoplestillalivein1978aftersurvivingtheleapbetween1937and1971 C.515peopletriedtosuicidebyjumpingfromGoldenGateBridgebetween1937and1971 D.three﹣fifthsyoungChinesewomenmaydecidetosuicidewithin2hours 3Whatshouldbethebesttitleforthetext? A.Moreliveshavebeensaved B.Suicideissurprisinglyimpulsive C.Asuicidepostponedisasuicideprevented D.Whysuicideisfallingaroundtheworld
他设法阻止了他儿子独自去游泳.managepreventfrom
如图表示菠菜叶肉细胞光合作用与呼吸作用过程中碳元素和氢元素的转移途径其中①～⑥代表有关生理过程．下列叙述正确的是
下列有关化学元素和化合物的说法正确的是
ManyyearsagoIworkedonamidnightshift夜班inahospitalinIndiana.Iwas1moneytogobacktocollege.Someofthepeopleonthatshiftcouldbe2.whichworemedownandmademelessdetermined.3therewasonewomanwhowasvery4andalwayssokindOther5wouldwanttotalktoheronbreaksbecausetheywouldleavefeelingmuch6. BecauseofmyAsperger'sSyndrome阿斯伯格综合症Iwas7somebasicsocialskillslikecommunicationcausingmuch8inmydailylife.Luckilysheshowedgreatcareandacceptedthemistakesone9makesinhisearlyteens.The10sheshowedhelpedmefigureoutwhattodonext.AndI11adifficulttimewhenlifewasverydarkforme.Ireturnedtoschooltocontinuemy12andgraduatedatlast. I'vefelt13topassherkindnessontoothersandIhavetriedtodoso.Hersmall14ofkindnesshasbeenrepaidmanytimes.Wehavetwo15inlife:kindnessorviolence.Eitherisagiftthatkeepsongiving.Whenyouknowthatyourgiftswillberepaidmorethanabilliontimesdoesn'tthechoiceseem16? Ichoosekindnesswheneverpossible.Idonot17anyofthechoicesI'vemadefromkindness.ButIdofeelsorryformanyofthechoicesImadefromviolence.IwishIcould18thatwomannowthoughIhavenoideawheresheis.Shehas19mylifeinawaythatshe'llneverknow.Andnowtheripples涟漪ofherkindness20throughmetomanyothers. 1A.collecting B.borrowing C.earning D.paying 2A.unlucky B.sensitive C.stubborn D.unfriendly 3A.Besides B.However C.Thus D.Indeed 4A.grateful B.cheerful C.doubtful D.forgetful 5A.strangers B.patients C.schoolmates D.workmates 6A.better B.healthier C.braver D.smarter 7A.tiredof B.shortof C.curiousabout D.concernedabout 8A.trouble B.danger C.violence D.loss 9A.suddenly B.finally C.normally D.gradually 10A.devotion B.satisfaction C.kindness D.forgiveness 11A.steppedinto B.sortedout C.cameacross D.pulledthrough 12A.research B.education C.performance D.exploration 13A.moved B.relaxed C.relieved D.surprised 14A.topic B.gift C.habit D.tip 15A.opinions B.chances C.beliefs D.choices 16A.clear B.funny C.foolish D.brief 17A.regret B.forget C.expect D.refuse 18A.please B.admire C.thank D.help 19A.ruined B.controlled C.designed D.affected 20A.burst B.float C.flow D.jump
2018年的诺贝尔奖获得者詹姆斯・艾利森发现在T细胞表面有种多为CTLA﹣4的蛋白质科学家本庶佑发现了T淋巴细胞上的PD﹣1蛋白．其中CTLA﹣4的蛋白质可以发挥“分子刹车”的作用当CTLA﹣4被激活后免疫反应就会终止．当CTLA﹣4处于抑制状态或者阻断PD﹣1的功能时都能使T细胞大量增殖集中攻击肿瘤从而有望治愈某些癌症．下列有关叙述正确的是
在人类对遗传物质的探索过程中肺炎双球菌的体外转化实验和噬茵体侵染细菌的实验最为经典下列有关两个实验的叙述不正确的是
Eventhougharecentstudyshowsnapping小睡hassomethingtodowithhigherdeathratescompaniesandcollegesacrosstheU.S.aresettingupnaproomstoincreaseefficiency效率.Trulyitwouldbeadreamtoreachanagreementonnapping. Butwhetherornotnappingisrightforyoudepends.Firstofallit'simportanttoaskyourselfwhyyou'retakingthenapsaysDr.SaraMednickapsychologistattheUniversityofCalifornia.Ifyou'respendingmuchofyourdayfeelingsleepythenyourdesiretonapmaybedrivenbystressorotherhealthconditionsthatbadlyaffectyoursleepMedmcksays. DaytimenappingisanearlysignofpossibleillhealthaddsYueLengaUniversityofCambridgesleepresearcher.LikeMednickhesuggestsdaytimesleepinessislikelyasignofotherhealthproblemsnottheircause. Putsimplyblaming指责napsforhigherdeathratesislikeblamingyourdoctorforheartdisease;you'remorelikelytoseeadoctorifyouhaveheartproblemsbutthatdoesn'tmeanshe'stoblame. ActuallynapsaregoodformostpeopleMednicksays.Herresearchshowsanapcanimprovebrainfunctionsrangingfrommemorytofocusandcreativity.Moreresearchshowsaquicknapcanlowerstressandrechargeyourwillpower.ButallofthesebenefitsdependonyougettingagoodnightofsleeptobeginwithMednickstresses. Howevernoteveryoneisagoodnapper.Somepeoplewakeupfromnapsfeelingterribleshesays.Ifyou'veneverbeenanapperbutwanttocashinonnapping'sbrainandhealthbenefitsMednicksaysyoumaybeabletoteachyourselftonap.Thetrickistokeepyourdaytimeshuteyeveryshort﹣nomorethan15minutesatfirst.Thiswillstopyourbrainandbodyfromfallingintothedeeperlevelsofsleepthatleaveyoufeelingfoggyuponwakingsheadds. Butifyou'rejustnotabornnapperdon'tsweatit.Everyone'sdifferentMednicksays.Ifyoufeelgoodwhateveryou'redoingisfine. 1ResearchersMednickandYueLengboththinkthatnappingcan. A.mirrorhealthproblems B.increaseworkefficiency C.causehigherdeathrates D.improvehealthconditions 2Whatdoestheauthorthinkofpeople'sblamingnapsforhigherdeathrates? A.Impolite. B.Necessary. C.Improper. D.Acceptable. 3TheunderlinedphrasecashinoninParagraph6probablymeans. A.applyfor B.takeadvantageof C.standfor D.taketheplaceof 4AccordingtoMednickthosewhoarenotbornnappersshould. A.takeiteasy B.shortensleeptime C.giveitatry D.improvesleepquality
Tocommunicatewithforeignersitisimportanttoknowtheirsocialcustoms1.Oryoumayhurtthefeelingsoftheotherpartywithoutactuallyintendingtodoso.Herearesomegeneraltips. 2don'thesitatetoask.SomeJapaneseseemtofeelthatitisimpolitetoaskbackevenwhentheydon'tquiteunderstand.Howeverit'smuchbettertosaythatyoudon'tunderstandthantopretendyouunderstandandanswerveryunclearly.Whenyoudon'tunderstandyoumaysayI'mafraidIdon'tunderstandyou.Wouldyoumindsayingitagain? •Alwaysanswerwhenyouareaskedaquestion.Westernersconsideritveryrudeifaquestionisnotanswered.Theythinkitisrudetoignoreaquestion3.SomanyJapaneseonlylaughnervouslywithoutsayinganythingwhentheyarespokento.ThiscomesfromembarrassmentbutnothingismoreunpleasantforWesterners. •Speakoutwhatyouthink.Westernersexpresstheiropinionsfreely4.Theydon'tmindhearingviewsthatdifferfromtheirown.Youmayexpressfranklywhatyouthinkorfeelofcoursebutyoumustn'tberudeinyourmannerofspeech. 5.TheEnglishuseofYesandNoisthesameasinJapaneseinaffirmative肯定的questionsbutinnegativequestionstheuseisopposite.InordinaryEnglishconversationsitisusualtoaddsomethingafterthemlikeYesbyallmeans.NoIreallydon't.MayIseeit? A.Don'tanswertoosimply B.Ifyoudon't'understand C.ItisthesamewiththeJapanese D.Besuretogiveyourdifferentopinions E.ItissurprisingtofindJapanesearedifferent F.Thisisespeciallytruewhencarryingonaconversation G.Theyfeelitisnaturalforpeopletohavedifferentideas
医学研究发现神经退行性疾病与神经元中形成的R﹣loop结构有关．R﹣loop结构是一种三链RNA﹣DNA杂合片段由于新产生的mRNA与DNA模板链形成了稳定的杂合链．导致该片段中DNA模板链的互补链只能以单链状态存在．下列叙述正确的是
在过去四十年中国发生了巨大的变化我们对此感到无比自豪.takeplace'介词+关系代词'定语从句
InJanuary2010apolicemanMichaelMalarsiewasondutyinAfghanistanwithothermemberswhenoneofthemsteppedonanIntelligentElectronicDeviceIEDburiedintheground.Itexplodedhittinghimintheface. TwoweekslaterhewokeupatWalterReedArmyMedicalCenter.MalarsierecalledhisfatherpushinghiminawheelchairtospeakwithadoctorwhotoldhimI'msorrywetriedbutthere'snothingwecando.You'regoingtobetotallyblind. TheexplosiondestroyedhiseyesightbutMalarsiewhowas22atthetimerealizedhowluckyhewastobealive.Theexplosionchangedmywholelife.Iwasn'tgoingtoletblindnessslowmedownhesaid. OneofthefirstthingsIthoughtofwasaguidedogMalarsiesaidsoheappliedforonewithFidelcoacharitableorganizationinConnecticutandaleadingprovideroftrainedguidedogs.Butoneofthosefour﹣leggedhelperscostabout﹩45000﹣notexactlyanaffordablepriceforanAirForceveteran老兵withafamily.・That'swhereNewman'sOwncamein﹣providingsomemoneythathelpedconnectMalarsiewithhisguidedog. OneyearlateraftertheexplosionMalarsiegotXxonayoungGermanshepherd.XxonhasgivenmebackthefreedomindependenceandconfidencetodowhatIneedtobeabletodohesaid.IthinkwhenyouhearaboutwhatNewman'sOwndoesonabroadrange范围it'shardtounderstandtheinfluencethatithas.・It'sonethingtohearadollaramountbutit'sawholeotherthingwhenyouhearthestoryofsomeonewho'spersonallybeenaffected.MylifehaschangedforeverMalarsieadded. Forover30yearsNewman'sOwnhashelpedsupportthousandsofcharitablecausesandorganizationswithclosetohalfabilliondollarsbeingdonatedsinceitsfoundingin1982.EverytimeyoubuyaNewman'sOwnproductyoustartajourneytowardimprovingsomeone'slife﹣someonelikeMichaelMalarsie. 1WhydidMichaelMalarsiebecomeblind? A.HesetoffanIEDbyaccident. B.Anexplosionhithimintheface. C.AfellowblewupanIEDonpurpose. D.Thedoctorsdidn'ttreathimproperly. 2HowdidNewman'sOwnhelpMichaelMalarsie? A.Byteachinghimbasiclifeskills. B.Bytrainingaguidedogforhim C.Byencouraginghimtobeconfident. D.Byofferinghimsomefinancialhelp. 3WhatcanweinferaboutNewman'sOwnaccordingtoParagraph5? A.Ithasmanyinterestingstories B.Itsinfluenceremainstobeseen C.Itmeansmuchtothoseinneed D.Itsactionisdifficulttounderstand.
XiaoLiacollegestudentbornafter1995usedtowashherhaireverytwodays.Butastheweatherhasgotcoldershehasbecomelazier.Shehasboughtamistspray喷雾器whichallowshertowashherhairlessoften.IwouldalsoliketohaveaproductthatcouldsavemethetroubleofputtingonmakeupshetoldOrientTodayapublicationaffiliatedtoHenanTelevision. SheisnottheonlyyoungChinesewhospendsmoneybecausesheslazy.AccordingtoareportissuedbyChina'se﹣commerceplatformTaobaoonChina'slazyeconomyChinesepeoplespent16billionyuanonproductsandservicesonlinein2018. Theso﹣calledlazyeconomyreferstoanewtypeofconsumptionofproductsandserviceswhicharedesignedtosavetimeandlabor.Accordingtothereportmanypeopleofthepost﹣1995generationbuyhigh﹣techelectronicdevicessuchasfloormoppingrobotsandautomaticwindowcleanerswhichsavethetroubleofdoinghouseholdchores.Meanwhiletake﹣outfooddeliveryservicesarealsopopularamongpeoplebomafter1995. Youngpeoplearewillingtospendmoneyonsuchproductsbecausetheywanttoenjoyhard﹣earnedleisure休闲timeafterabusyandstressfuldayatworkorschoolreportedGlobalTimes.Becausetheyneedtofocusontheirstudiesorjobstheseso﹣calledlazypeopletendtousetheirleisuretimemoreefficiently. Whilethelazyeconomymightbeconvenientforyoungpeopleitmightalsocreateproblems.The'lazyeconomy'oncampusisexpressedinthingslikepeoplebuyingfoodorotherthingswithoutleavingthedormitory宿舍.AsaresulttheystayintheirdormitoriesalldaylongplayingoncomputersandsmartphonesateachersumamedWenfromBeijingJiaotongUniversitytoldChinaNews. AccordingtoJinanDailythissituationcouldleadtoyoungpeoplebecominglesssociableandevendevelopingproblemsofcommunicatingwithothers.Youngpeopleshouldbecautiousaboutit. The'lazyeconomy'isachoiceoflifestyle.WhilethelazyeconomysavestimeandlaborthesavedtimeshouldbeusedtodovaluablethingscommentedOrientToday. 1XiaoLiismentionedto. A.introducealazygirltoreader B.explainhowyounggirlslivenowadays C.leadtothetopicofthetext D.tellusthegenerationbecomemoreandmorelazy 2What'slazyeconomy? A.Anewtypeofconsumptioncreatedbypost﹣1995generation. B.Apatternofconsumptioninwhichpeoplesavetimeandlabor. C.Anewtypeofsocietyinwhichpeoplebecomemoreandmorelazy. D.Apatternofconsumptionisdesignforthepost﹣1995generation. 3Whyyoungpeoplelikeonlineshoppingaccordingtothepassage? A.Becausethegoodsonlinearecheaper. B.Becausetherearevarietiesofgoodsonline. C.Becauseyoungpeoplewanttomakethebestofleisure休闲time. D.Becauseyoungpeoplearelazier. 4Whichisthedisadvantageoflazyeconomyaccordingtothepassage? A.Makingyoungpeoplelazy. B.Buyingunhealthyfoodonline. C.Wastingmoney. D.Makingyoungpeoplelesssociable.
Batsaretheonlymammalsthatcanflyagreatdistancebuttheyhaveanotherability.Manybatsliveaverylongtimeforananimaltheirsize. Europeanresearchersarestudyingbatstounderstandwhytheylivesolong.Theyhopetomakediscoveriesaimedatfightingtheagingprocessinhumanbeings.Lastweekthegroupofscientistssaidtheyhadidentifiedimportantbiologicalqualitiesinsomebatspecies. Thegroupstudiedbatchromosomes染色体alineofgenesfoundinthenucleusofcells.Thescientistsweremostinterestedinstructuresconnectedtotheendsofthechromosomes.Theyarecalledtelomeres.Telomeresprotecttheendsofchromosomeswhichshorteneachtimeacelldivides.Scientistsbelievethisshorteningprocesscausescellstobreakdown.Theysaythisiswhatcausesaging. TheEuropeanresearchersstudied493batsfromfourbatspecies.Thegroupusedinformationthathadbeengatheredovermorethan60years.Oftheseanimalsthegreatermouse﹣earedbatgenerallylivedthelongestanaverageof37years.ThescientistssaidthisandarelatedspecieswhicharegroupedtogetherunderthenameMyotishadtelomeresthatdidnotshortenwithage. Thescientists'findingssuggestthatthesebats'cellshavetheabilitytomaintainandrepairtheirtelomeres.Thistheysaidhelpsguardagainsttheagingprocess. Basedonitsbodysizeabatlikethegreatermouse﹣earedbatwouldbeexpectedtolivefouryears.Butthesemammalshavebeenfoundtolivenearly10timeslongerthanthat. 1Whichthefollowingstatementisrightaccordingtothetext? A.Batslivethelongesttimeamonganimals. B.Europeanresearcherswanttofighttheagingprocessinhumanbeing. C.Fromtheinformationscientistsfoundthegreatermouse﹣earedbatlivedthelongestlifeinallspecials. D.Scientistshavedevelopedwaystofightagingbystudyingbats. 2Accordingtothescientiststelomeresare? A.structureswhichprotecttheendsofchromosomes. B.geneswhichcanbefoundinthenucleusofcells. C.chromosomeswhichcanshorteneachtimeacelldivides. D.agingprocesses. 3AccordingtothetextMyotishadthelongestlifeamongbatsspeciesbecause? A.theyhadtelomeresthatkeepageprocessing. B.theircellscanmaintainandrepairtheirtelomeres. C.theirchromosomesweremorethanothers. D.theirtelomerescausecellstobreakdown
生态位表示生态系统中每种生物生存所必需的生境最小阈值．在自然环境里每一个特定位置都有不同的生物其活动以及与其它生物的关系取决于它的特殊结构生理和行为故具有自己的独特生态位． 1据生态位内涵可知每种生物占有各自的空间在群落中具有各自的功能和营养位置以及在温度湿度土壤等环境变化梯度中所居的地位．一个种的生态位是按其来确定的． 2在某时期内该草场蝗灾严重为了掌握灾情对该草场的几种蝗虫的种群密度进行调查结果如图所示 ①调查某种蝗虫若虫跳蝻的种群密度可采用法．该实验的自变量是根据实验结果可建立模型．当蝗虫密度小于15只/m2时虫采食不能促进牧草再生长． ②为避免农药灭蝗虫带来的环境污染现在实行大面积施用蝗虫微孢子虫蝗虫的寄生虫可以很好的控制蝗灾此方法属于防治．该草原群落的是区别不同草原群落的重要特征．
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.每处错误仅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∧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:在错的词下画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. DearTerry Howareyoudoing?Inyourlastletteryouaskedmeforpart﹣timeworkinyoursummerholiday.NowIamwritingtotellyoumyopinions. Tobeginwithyoucanmakesomepocketmoneythathelpsdevelopasenseofindependent.Besidesyoucanlearnwhattodealwithvariousproblemsintheworkplace.What'smoreyoucanbuildnewfriendshipandimprovedbettersocialskills. Butasamiddleschoolstudentlearnisveryimportantforyou.Youshouldmakefulltheuseoftheholidaytostudy.Myadviceisthis:makeadetailedplanforyourstudybutworkandmanagethingsproper. Wishyouapleasantsummer. Yours LiHua
假定你是李华.你从互联网上得知第十二届国际未来商业领袖峰会InternationalFutureBusinessLeaderSummit将在上海举行并欢迎中学生参加.请你写一封电子邮件申请参加.要点如下: 1.自我介绍包括英语能力; 2.申请参加活动的意图增长商业知识提高领导力加强交流; 3.希望获准. 注意:1.词数80左右; 2.可适当加入细节使内容充实行文连贯.
ARaceAgainstDeath ItwasacoldJanuaryin1925inNomeAlaska.Thetownwascutofffromtherestoftheworldduetoheavysnow. Onthe20thofthatmonthDr.Welch1asickboyBillyandknewhehaddiphtheriaadeadlyinfectious传染的diseasemainlyaffectingchildren.ThechildrenofNomewouldbe2ifitstruckthetown.Dr.Welchneededmedicineassoonaspossibletostopotherkidsfromgettingsick.3theclosestsupplywasover1000milesawayinAnchorage. HowcouldthemedicinegettoNome?Thetown's4wasalreadyfulloficesoitcouldn'tcomebyship.Carsandhorsescouldn'ttravelonthe5roads.Jetairplanesandbigtrucksdidn'texistyet. 6January26Billyandthreeotherchildrenhaddied.Twentymorewere7.Nome'stownofficialscameupwithan8.Theywouldhavethemedicinesentby9fromAnchoragetoNenana.Fromtheredogsled狗拉雪橇drivers﹣knownasmushers﹣would10ittoNomeinarelay接力. TheracebeganonJanuary27.ThefirstmusherShannonpickedupthemedicinefromthetrainatNenanaandrodeallnight.11hehandedthemedicinetothenextmusherShannon'sfacewasblackfromtheextremecold. OnJanuary31amushernamedSeppalahadto12afrozenbodyofwatercalledNortonSound.Itwasthemost13partofthejourney.NortonSoundwascoveredwithicewhichcouldsometimesbreakupwithoutwarning.IfthathappenedSeppalamightfallintotheicywaterbelow.Hewould14andsowouldthesickchildrenofNome.ButSeppalamadeitacross. AhugesnowstormhitonFebruary1.AmushernamedKaasenhadtobravethisstorm.Atonepointhugepilesofsnowblockedhis15.Hehadtoleavethetrail雪橇痕迹togetaroundthem.Conditionsweresobadthatitwasimpossibleforhimto16thetrailagain.TheonlyhopewasBaltoKaasen'sleaddog.Baltoputhisnosetotheground17tofindthesmellofotherdogsthathadtraveledonthetrail.IfBaltofaileditwouldmeandisasterforNome.Theminutespassedby.SuddenlyBaltobeganto18.Hehadfoundthetrail. At5:30amonFebruary2Kaasenandhisdog19inNome.WithinminutesDr.Welchhadthemedicine.Hequicklygaveittothesickchildren.Allofthemrecovered. Nomehadbeen20. 1A.examined B.warned C.interviewed D.cured 2A.harmless B.helpless C.fearless D.careless 3A.Moreover B.Therefore C.Otherwise D.However 4A.airport B.station C.harbor D.border 5A.narrow B.snowy C.busy D.dirty 6A.From B.On C.By D.After 7A.tired B.upset C.pale D.sick 8A.plan B.excuse C.message D.topic 9A.air B.rail C.sea D.road 10A.carry B.return C.mail D.give 11A.Though B.Since C.When D.If 12A.enter B.move C.visit D.cross 13A.shameful B.boring C.dangerous D.foolish 14A.escape B.bleed C.swim D.die 15A.memory B.exit C.way D.destination 16A.find B.fix C.pass D.change 17A.pretending B.trying C.asking D.learning 18A.run B.leave C.bite D.play 19A.gathered B.stayed C.camped D.arrived 20A.controlled B.saved C.founded D.developed
假如你是李华今年暑假你将去英国CliftonSchool学习一个月并将寄宿在英国学生Jack家中.写一封电子邮件向他介绍自己并询问几个问题1.住宿方式2.能否上网3.饮食方式4.到校的交通 注意:1.词数100左右可适当增加内容2.开头和结尾已给出不计入总词数 DearJack IamLiHuaahighschoolstudentfromChina.……… Yours LiHua
下列关于激素抗体酶和神经递质的叙述正确的是
TwoyearsagoattheBritishAcademyofFilmandTelevisionArtsteapartyinLosAngelesMillieBobbyBrownwasacharmingdarling.WhenevershemetsomeoneshewouldextendherhandandsayHi!I'mMillieBobbyBrown.Sogladtomeetyou! BestknownforstarringasElevenayounggirlwithpsychokineticabilitiesinthehitsci﹣fiTVseriesStrangerThingsBrownisaniconforhergenerationasWmagazineputit. ToplayElevenBrownhadtocutoffherlonghairandshaveherheadwhichissomethingthatwouldbequitedifficultforanyteenager.ButtheBritishactressdiditwithoutasecondthought.Thisisperhapswhatsetsherapartfromfellowchildstars.Ontheonehanditwascool.Whenyou'rebaldrainfeelslikeaheadmassage.I'dwalkintherainandpeoplewouldlookatmelikeIwascrazyshetoldWButontheotherhandpeoplestaredatmewonderingwhetherIwassick.SomewouldevenlaughatmewithoutknowingwhetherIwasorwasn'tsick. ThesepeoplecertainlyhurtBrownesfeelingsbuttheyalsotaughthersomethingaboutcompassion.IntheendbeingbaldwasthebestthingIeverdid﹣beingdifferentchangedmylife.Iwantedtoembracemybaldnessandhopefullyinspirepeopleshesaid. HerbraverywonherthehonoroftheyoungestUNICEFGoodwillAmbassadorlastmonth. It'sahugehonortobecomeUNICEF'snewestandyoungesteverGoodwillAmbassadorthe14﹣year﹣oldwhohassupportedthechildren'scharitysince2016wroteonsocialmediaplatformInstagram.IamlookingforwardtomeetingasmanychildrenandyoungpeopleasIcanhearingtheirstoriesandspeakingoutontheirbehalf. ChildrenaretheirownbestadvocatesHenriettaForeUNICEF'sexecutivedirectorsaidinanannouncement.IknowthatMilliewilluseherpassiontodefendtherightsofvulnerablechildrenandyoungpeopleeverywhere. 1FromthepassageweknowthatMillieis. A.conservative B.aggressive C.outgoing D.energetic 2WhatdidMilliedotoplaywellinStrangerThings? A.Shetiedupherlonghair. B.Shemadeherheadbald. C.Shelearnedfromotherfellowstars. D.Sheshavedherbody. 3WhichstatementisTRUEaccordingthepassage? A.Milliewasgreatlyencouragedbyothers. B.Milliedidn'tregrettedbeingshaved. C.Milliewasinspiredbyallkindsofcomments. D.Milliewasdiscouragedbymisunderstanding. 4What'sHenriettaFore'sopinionaccordingtothepassage? A.Millieissuretohelpthevulnerablechildrenaroundtheworld. B.ChildrenareMollie'sbestadvocates. C.Milliewilldoherbesttodefendagainstvulnerablechildren. D.Therearesomanyvulnerablechildrenandyoungpeopleintheworld.
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