首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
已知实数x，y满足不等式组，则x2+y2的最小值是（ ）
查看本题答案
包含此试题的试卷
高三上学期数学《》真题及答案
点击查看
你可能感兴趣的试题
设xy满足不等式组则z=﹣2x+y的最小值为.
已知实数xy满足不等式组则2x﹣y的最小值为．
不等式选做题已知不等式x+y+≥9对任意正实数xy恒成立则正实数a的最小值为_____.
已知实数xy满足不等式组则2x﹣y的最小值为．
设变量xy满足不等式组则目标函数z＝2x＋3y的最小值是________.
已知实数xy满足不等式组则2x﹣y的最小值为．
若实数xy满足不等式组目标函数z=kx﹣y的最大值为12最小值为0则实数k=.
已知实数xy满足不等式组则2x﹣y的最小值为．
已知z=x﹣2y其中xy满足不等式组则z的最小值为
若实数xy满足不等式组则z=x2+y2的最小值是.第1题
已知实数xy满足不等式组1求z1=x2+y2的最小值2求z2=的取值范围.
若实数xy满足不等式组则的最小值是
如果实数xy满足不等式组贝x2+y2的最小值是
已知点P.xy在不等式组表示的平面区域上运动则z＝x－y的最小值是
－2
2
－1
1
已知不等式x＋y≥9对任意正实数xy恒成立则正实数a取最小值为
2
4
6
8
已知实数xy满足不等式组则z=x+2y的最小值为
﹣4
5
4
无最小值
如果实数xy满足不等式组 则x2+y2的最小值是．
已知实数xy满足不等式组则2x+y的最大值为
如果实数xy满足不等式组目标函数z=kx+y的最大值为12最小值为3那么实数k的值为
2
-2
1
-1
若实数xy满足不等式组则z＝2x+y的最小值是．
热门试题
更多
Isthereanyonefatherisahistoryteacherinyourclass? A.whose B.who's C.which D.whom
Huntersaroundthefoxhadnowheretohidehimself. A.search B.searching C.searched D.havingsearched
ItravelalotandIfindoutdifferentstyles风格ofdirectionseverytimeIaskHowcanIgettothepostoffice? TheforeigntouristsareoftenconfusedinJapanbecausemoststreetstheredon'thavenames.Peopleuselandmarks地标intheirdirectionsinsteadofstreetnames.ForexampletheJapanesewillsaytotravelersGostraightdowntothecorner.Turnleftatthebighotelandgopastafruitmarket.Thepostofficeisacrossfromthebusstop. InthecountrysideoftheAmericanMidwesttherearenotusuallymanylandmarks.Therearenomountainssothelandisveryflatinmanyplacestherearenotownsorbuildingswithinmiles.Insteadoflandmarkspeoplewilltellyoudirectionsanddistances.InKansasorIowaforexamplepeoplewillsayGonorthtwomiles.Turneastandthengoanothermile. PeopleinLosAngelesCaliforniahavenoideaofdistanceonthemaptheymeasuredistanceintimenotmiles.Howfarawayisthepostoffice?youask.Ohtheyanswerit'saboutfiveminutesfromhere.YousayYesbuthowmanymilesawayisit?Theydon'tknow. It'struethatapersondoesn'tknowtheanswertoyourquestionsometimes.Whathappensinsuchasituation?ANewYorkermightsaySorryIhavenoidea.ButinYucatanMexiconooneanswersIdon'tknowPeopleinYucatanbelievethatIdon'tknowisimpoliteTheyusuallygiveanansweroftenawrongone.AtouristcangetveryverylostinYucatan! 56.WhenatouristaskstheJapanesethewaytoacertainplacetheyusually. A.describetheplacecarefully B.showhimthenamesofthestreets B.tellhimamapoftheplace D.refertorecognizablebuildingsandplaces 57.Whatistheplacewherepeoplemeasuredistanceintime? A.NewYork B.LosAngeles C.Kansas D.Iowa 58.PeopleinYucatanmaygiveatouristawronganswer. A.inordertosavetime B.asatest C.soastobepolite D.forfun 60.Whatcanweinferfromthetext? A.It'simportantfortravelerstounderstandculturaldifferences.. B.It'susefulfortravelerstoknowhowtoaskthewayproperly. C.Peoplehavesimilarunderstandingsofpoliteness. D.NewYorkersaregenerallynothonesttovisitors.
EuropeansshouldtrytostayindoorsifashfromIceland'svolcanostartssettlingtheWorldHealthOrganizationwarnedFridayassmallamountsfellinIcelandScotlandandNorway. WHOspokesmanDanielEpsteinsaidthemicroscopic微小的ashispotentiallydangerousforpeoplewhenitstartstoreachtheEarthbecauseinhaled吸入particlescanenterthelungsandcauserespiratoryproblems.AndhealsosaidEuropeanswhogooutsidemightwanttoconsiderwearingamask. Otherexpertshoweverweren'tconvincedthevolcanicashwouldhaveamajoreffectonpeoples'healthandsaidWHO'swarningswerehysterical.Theysaidvolcanicashwasmuchlessdangerousthancigarettesmokeorpollution.Volcanicashismadeoffineparticlesoffragmentedvolcanicrock.Itislightgraytoblackandcanbeasfineastalcumpowder.Duringavolcaniceruptiontheashcanbebreatheddeepintothelungsandcauseirritationeveninhealthypeople.Butonceitfallsfromagreaterdistance﹣likefromthecloudcurrentlyhoveringaboveEurope﹣itshealtheffectsareoftenminimalexpertssay. NotallparticlesarecreatedequalsaidKenDonaldsonaprofessorofrespiratorytoxicologyattheUniversityofEdinburghInthegreatschemeofthingsvolcanicashisnotallthatharmful.AndhesaidmostEuropeans'exposuretovolcanicashwouldbenegligibleandthatonlythoseintheneardistrictsoftheIcelandicvolcanowouldlikelybeatrisk. Dr.StephenSpiroaprofessorofrespiratorymedicineanddeputychairoftheBritishLungFoundationsaidthefurthertheparticlestravelthelessdangeroustheywillbe.ThecloudhasalreadypassedovernorthernScotlandandwehaven'theardofanyilleffectstherehesaid.Spirosaidtowearmasksorstayindoorstoavoidvolcanicashwasoverthetopandabithysterical. 13.Thetextismainlyabout. A.theeffectofvolcanicash B.thehealthriskofvolcanicash C.thedisadvantagesofvolcanicash D.theopinionsonhealthriskofvolcanicash 14.WhichoneistrueaccordingtoParagraph3? A.Thevolcanicash'seffectsonEuropeanswerelittle. B.Theashcausedirritationeveninhealthypeople. C.OtherexpertsthoughtWTO'Swarningswereuseful. D.Thevolcanicashwasmoredangerousthancigarettesmokeorpollution. 15.Whatcanwelearnfromthepassage? A.Thevolcanicashwouldn'tbeharmfultopeople. B.Allexpertsthoughtthevolcanicashdidgreatharmtoourhealth. C.Peopleclosetothevolcanowouldlikelybeatriskaccordingtosomeexperts. D.EuropeansshouldstayindoorsbecauseIceland'svolcanostartssettling.
山鸡椒是一种在南方分布广泛的野生芳香植物山鸡椒油具有较好的抑菌作用．请回答 1植物芳香油的组成成分主要包括． 2一般采用水气蒸馏法来提取山鸡椒油原因是常选取山鸡椒的新鲜果实和叶片作为提取材料原因是．提取过程中使用无水硫酸钠其作用是． 3为研究山鸡椒油对细菌真菌的抑制作用及热处理对山鸡椒油作用的影响进行了相关实验研究结果如表． ①本实验的自变量是． ②本实验得到的结论有． 4若对实验所用样品中的酵母菌含量进行测定可将1mL样液稀释100倍在3个平板上分别接入0.1mL稀释液并均匀涂布经适当培养后平板上的菌落数分别是323436．据此可得出每升样品中的活菌数为实验中采用的接种方法是．
Whendifferentculturesweoftenpayattentiononlytothedifferenceswithoutnoticingthemanysimilarities. A.compared B.beingcompared C.comparing D.havingcompared
Flowersarebelievedasthegreatestmessengersoflove.Theyarewidelyusedallovertheworldtorepresentloveandcare.Flowersareawonderfulcreationofnature.Theycanshowtheuniquepersonalityofamother.Soyoucanshowyourlovewiththehelpoftheseflowers.YoucangivebeautifulflowerstoyourmotheronMother'sDay. Amotherisawomanthathasendlessloveforherchildrenandtheloveisselfless.Infactsheisbornakindperson.Sheisoneofthemostimportantpeopleinyourlife.Sotoshowyourloveforyourmotheryoucangivebeautifulflowerstoheronthisbigday. Youcaneasilyfindlotsofdifferenttypesofflowersinmanydifferentcolors.Thebestchoiceforamotheriscarnations康乃馨especiallytheredyellowandpinkones.Youdon'tneedtogiveherrosesonMother'sDay.Youcangiveherabouquet花束ofanothertypeofflowerinstead.Thesmellandstyleoftheflowerarrangementthatyougivewillshowyourlove. Somepeopleliketobuyflowersearlyandkeeptheminthefridgeforfurtheruse.Thisisnotawiseidea.Inthiswayflowerslosetheirfreshness.Itisbettertobuyafreshbouquetanddeliver递送itassoonaspossible.Alwaystrytomakeyourpurchaseattherighttime.Inadditionifyourmotherisnotnearyouandyouwanttosendhersomeflowersthenyoucanuseanonlineservice.ThereareMother'sDayflowerdeliveryservicesallaroundtheworld. GiveFlowerstoYourMotheronMother'sDay Meaningsofflowers ▲thegreatestmessengersoflove. ▲awonderfulcreationofnature 71forgivingflowers ▲Flowersstandforloveandcare. ▲Flowers72theuniquepersonalityofamother. ▲Themother'sloveis73andselfless. ▲Mothersare74toyou. ▲Givingbeautifulflowerstoyourmotherisawayto75. 76ongivingflowerstoyourmother ▲Redyellowandpinkcarnationsarethebest77.▲Youcansendabouquetofdifferentflowersinstead. ▲Youshouldbuy78flowersanddeliverthemquickly. ▲Youcandeliverflowerswithan79serviceifyourmotheris 80away. 71. 72. 73. 74. 75. 76. 77. 78. 79. 80.
Thefactorykeepsgivingoffsmoketheairdirty. A.made B.making C.tomake D.makes
In1989an8.2earthquakealmostflattedAmericakillingover30000peopleinlessthanfourminutes.Inthemiddleofcompletedamageanddisorderafatherrushedtotheschoolwherehissonwassupposedtobe21thatthebuildingwas22.Aftertheshockhe23thepromisehehadmadetohissonNomatter24I'llalwaysbethereforyou!Andtearsbeganto25hiseyes.Ashelookedatthepileofruinsitlookedhopelessbuthekeptrememberinghis26tohisson.Herushedthereandstarted27theruins. Ashewasdiggingotherhelplessparentsarrived28It'stoolate!They'vealldead!29facereality!There'snothingyoucando!Toeachparentheparentherespondedwith30Areyougoingtohelpmenow?Noonehelped.Andthenhecontinuedtodigforhissonstonebystone. Courageouslyhewentonalonebecauseheneededtoknow31Ismyboy32orishedead?Hedugforeighthours…12hours…24hours…36hours…Thenin33hourhepulledbackalargestoneandheardhisson's34.Hescreamedhisson'snameARMAND!HeheardbackDad!?!It'smeDad!Itoldtheotherkidsnottoworry.Itoldthemthatifyouwerealiveyou35meand36yousavedmethey'dbesaved.Youpromised‘NomatterwhathappensI'llalwaysbethereforyou!'YoudiditDad! What‘sgoingoninthere?thefatherasked. Thereare14ofus373833Dad.We'rescaredhungrythirstyandthankfulyou'rehere.Whenthebuildingcollapseditmade39anditsavedus. Comeoutboy! NoDad!Lettheotherkidsoutfirst40Iknowyou'llgetme!NomatterwhathappensIknowyou'llalwaysbethereforme! 21.A.onlydiscovering B.onlytodiscover C.onlyrealizing D.onlytorealize 22.A.asflatasapancake B.ashighasamountain C.asstrongasanox D.asweakasakitten 23.A.memorized B.forgot C.kept D.remembered 24.A.whathappens B.whathappen C.which D.who 25.A.fill B.fillin C.come D.burst 26.A.picture B.promise C.present D.encourage 27.A.digging B.diggingthrough C.diggingout D.digginginto 28.A.tosay B.said C.andsaying D.saying 29.A.Comeout B.Comeagain C.Comeon D.Comeoff 30.A.onenoise B.onesound C.onerow D.oneline 31.A.forhimself B.ofhimself C.byhimself D.tohimself 32.A.live B.livable C.alive D.lively 33.A.38 B.the38 C.38th D.the38th 34.A.sound B.voice C.noise D.tone 35.A.willsave B.wouldsave C.save D.wouldhavesaved 36.A.when B.because C.evenif D.though 37.A.remained B.missing C.left D.gone 38.A.for B.behind C.outof D.over 39.A.apromise B.space C.room D.atriangle 40.A.because B.though C.when D.eventhough
werunoutofthenaturalmaterials? A.Onlyif B.Asif C.Whatif D.Evenif
IthappenedwhenIwasalittlegirl.IcanrememberneitherthebeginningnortheendbutwheneverI36ittearsflowfreelydownmyface. WhenIwasyoungmyfamilyledan37lifeinthecountry.Asyoucanimaginemanycountryroadsaredifficulttowalkon.Oneeveningwewerevisitingsomerelativesandthe38wasverybad.Itbegantorainonmywaybackhome.Dadcarriedmeonhis39.Momgaveherovercoattomy40.Wewalkedtogetherthroughtherainformorethanonehour. IwasfatatthattimeandDadmustbe41tocarrymeforsuchalongtime.Healmost42downmanytimes.Inthehopeofreducingmyfather'sburdenItriedtowalkmyselfbutIachievednothingsinceIwasjustalittlekid. Whenwearrivedhometheinsideofourhousewas43withrainwater.Therainhadcomethroughourleaky有裂缝的roofandwaterwaseverywhere. Momputbowlsandbasinsallaroundthehousetotrytocatchtherain.Thensheputmeandmyelderbrotherto44carefullyplacingusontheremaining45place.Ifellasleepsoon.WhenIopenedmyeyesIfoundDadandMomweresleepinginchairsbothhavingcaughtabadcold. Thisismyearliest46.ThoughtheeveninghaslongpassedandnowweliveahappylifeIwon'tforgettherainwewentthroughtogether.Therainthateveningandespeciallymyparents'47willstayinmymindforever. 36.A.dealwith B.thinkof C.leadto D.sufferfrom 37.A.hard B.unhappy C.interesting D.rich 38.A.food B.drink C.traffic D.weather 39.A.arm B.back C.bike D.car 40.A.brother B.sister C.friend D.relative 41.A.worried B.tired C.angry D.lazy 42.A.fell B.looked C.turned D.ran 43.A.buried B.covered C.mixed D.crowded 44.A.ground B.floor C.bed D.ceiling 45.A.dry B.clean C.beautiful D.warm 46.A.visit B.excitement C.night D.memory 47.A.wishes B.words C.love D.education
Letmeknowthedateandtimeofyoura.Someonegetstosomeplace
iswell﹣knownthattheearthmovesaroundthesun. A.It B.that C.which D.how
Shewasreallyupsetandsworethatsheanyoneaboutit. A.hadn'ttold B.hasn'ttold C.doesn'ttell D.wasn'ttelling
假如你是王平几天前你和你的好朋友__在组织班级活动时因意见不一致发生了争吵当时你的态度非常粗鲁言语很伤人结果__不再理你了.现在你非常愧疚.请你给__写一封信以表达你的歉意请求他的原谅并表达继续保持友谊的愿望. 注意1.内容可以适当发挥注意行文连贯 2.开头和结尾已给出不计入总词数. DearLiQiang Iamwritingto Yourssincerely WangPing.
某科研小组给实验小鼠接种致病菌E建立了细菌性腹泻病模型并用某复方草药对其进行药效试验．结果表明该草药能增强吞噬细胞的吞噬能力并能提高IgG等抗体的分泌量．回答下列问题 1通常致病菌要入侵机体首先需要穿过的身体屏障是． 2初次接种致病菌E后进入吞噬细胞内的致病菌E可被这一细胞器处理． 3双缩脲试剂能与该腹泻病模型小鼠的血清样本产生紫色反应该现象填“能”或“不能”说明血清中含有抗致病菌E的IgG原因是．
Hemadeasuggestionthatyouassoonaspossible. A.quitsmoking B.quittedsmoking C.mustquitsmoking D.hadquittedsmoking
Mostpeoplewanttoworkbutithadbecomemoredifficultintoday'sworldtofindworkforeveryone.Theeconomy经济oftheworldneedstogrowby4%eachyearjusttokeeptheoldnumberofjobsforpeople.Oftenthisisnotpossibleandsomorepeoplearewithoutwork.Somepeoplehavenojobsnowbecausenewmachinescandotheworkofmanypeopleinashortertime.Alsomachinesdonotaskformoremoneyandlongerholidays.Inallofthecountriesoftheworldmachinesaretakingworkfrompeoplenotonlyinfactoriesbutalsoonthefarms.Onemachinecanoftendotheworkoffortypeople.About75000peoplearemovingtothecitiesadaytolookforjobsbutonly60%ofthemcanfindjobs. 28.Itwasorpeopletofindworkbeforethemachineswerewidelyusedinthefactories. A.moredifficult B.easier C.notpossible D.difficult 29.Iftheeconomyoftheworldgrowsby4%eachyear. A.peoplewillhavenojobs B.4%ofthepeoplewillhavejobstoo C.peoplecanhavethesamenumberofjobsasbefore D.96%ofthepeoplewillhavejobs 30.Howmanypeoplegointocitiestolookforjobseachday? A.Morethan75000. B.60%ofthepeople. C.About75000. D.About4%ofthepeopleintheworld. 31.WhichofthefollowingisNOTtrue? A.Mostpeoplewanttohavejobs. B.Machinesneedmoremoneyandlongerholidays. C.Nowmorepeoplearewithoutwork. D.Machinesaretakingworkinsteadofpeoplenotonlyinfactoriesbutalsoonthefarms.
Theworld'spopulationhasgrownsixtimesitwasin1800. A.bywhat B.bythat C.inwhat D.tothat
Whatisyourfavouritecolour?Doyoulikeyelloworangered?1.Doyouprefergreysandblues?Thenyouareprobablyquietshyandyouwouldratherfollowthanlead.Youtendtobepessimist.Atleastthisiswhatpsychologiststellusandtheyshouldknowbecausetheyhavebeenseriouslystudyingthemeaningofcolourpreferenceaswellastheeffectthatcolourshaveonhumanbeings2.Ifyouhappentolovebrownyoudidsoassoonasyouopenedyoureyesoratleastassoonasyoucouldseeclearly. 3.Ayellowroommakesmostpeoplefeelmorecheerfulandmorerelaxedthanadarkgreenoneandareddressbringswarmthandcheertothesaddestwinterday.4.AblackbridgeovertheThamesRivernearLondonusedtobethesceneofmoresuicides自杀thananyotherbridgeinthearea﹣﹣﹣untilitwasrepaintedgreen.Thenumberofsuicideattemptsimmediatelyfellsharply.Perhapsitwouldhavefallenevenmoreifthebridgehadbeendoneinpinkorbabyblue. 5.Itisafactthatfactoryworkersworkbetterharderandhavefeweraccidentswhentheirmachinesarepaintedorangeratherthanblackorgrey. A.Ontheotherhandblackisdepressing. B.Theytellusamongotherfactsthatwedonotchooseourfavouritecolourasgrowup﹣﹣﹣wearebornwithourpreference. C.Theroomsarepaintedindifferentcoloursasyoulike. D.Ifyoudoyoumustbeanoptimistaleaderanactivepersonwhoenjoyslifepeopleandexcitement. E.Lightandbrightcoloursmakepeoplenotonlyhappierbutmoreactive. F.Lifeislikeapictureorapoemfullofdifferentcolours. G.Coloursdoinfluenceourmoods﹣﹣﹣thereisnodoubtaboutit. 1. 2. 3. 4. 5.
用日记形式记一次有意义的旅行. 提示1.时间2014年10月16日星期天2.天气晴3.人员你班全体人员4.地点贺兰山森林公园乘车一小时到达5.活动内容记录看到的动植物野餐检验河水看看是否有污染. 注意词数100左右.
Thinkoflifeasagameinwhichyouareplayingwithfiveballsintheair.Younamethemworkfamilyhealthfriendsandspirit精神andyoukeepallofthemintheair.Youwillsoonunderstandthatworkisrubberball.Ifyoudropititwillbounce弹回back. Buttheotherfourballsfamilyhealthfriendsandspiritaremadeofglass.Ifyoudroponeofthesetheywillbebroken.Theywillneverbethesame.Youmustunderstandthatandtrytohavebalanceinyourlife.How? Don'tlookdownonyourvaluebycomparingyourselfwithothers.Itisbecausewearedifferentandeachofusisspecial. Don'tletotherpeoplesetgoalsforyou.Onlyyouknowwhatisbestforyourself. Don'tgiveupwhenyoustillhavesomethingtogive.Nothingisreallyoveruntilthemomentyoustoptrying. Don'tbeafraidofdifficulties.Itisbytakingchancesthatwelearnhowtobebrave. Don'tshutloveofoutofyourlifebysayingit'spossible.Thequickestwaytoreceiveloveistogiveitthefastestwaytoloseloveistoholdittootightthebestwaytokeeploveistogiveitwings. Don'trunthroughlifesofastthatyouforgetnotonlywhereyou'vebeenbutalsowhereyouaregoing. Don'tbeafraidtolearn.Knowledgeisatreasure珍宝youcanalwayscarryeasily. Don'tusetimeorwordscarelessly.Youcan'tgetthemback.Yesterdayishistorytomorrowismysteryandtodayisagiftthat'swhywecallitthepresent.Lifeisnotacompetitionbutatripstepbystep. 61.Thepassagetellsusnottobecauseeveryoneisspecial. A.beafraidofdifficulties B.beafraidtolearn C.runthroughlifesofast D.compareyourselfwithothers 62.ThesentenceNothingisreallyoveruntilthemomentyoustoptrying.Meansthat. A.Nothingispossible. B.ifwedon'tgiveupthereisalwayshope C.youshouldlearntogiveup D.althoughyoutrynothingwillchange 63.Whycan'tweusetimecarelessly? A.Becausetimeistooexpensive. B.Becausetimeneverreturns. C.Becausewearetoopoor. D.Becausetimewillgetback. 64.Ifyourunthroughlifesofastyouwill. A.loseyourowntreasurethatyoucanalwayscarryeasily B.loselovebyholdingittootight. C.forgetnotonlywhereyou'vebeenbutalsowhereyouaregoing D.notbeafraidofthedifficulties 65.Accordingtothepassagewhichisthebesttitle? A.Nothingisimpossible B.Glassballsareeasytobebroken C.Thingsyoucan'tdo D.Treatyourlifeinarightway.
theInternetcanbehelpfulIdon'tthinkitwisetospendtoomuchtimeonit. A.Though B.Because C.As D.If
﹣﹣﹣Thedoorisopen.SomeonehavecomeinwhileIwasout. ﹣﹣﹣Really?Youcallthepoliceimmediately. A.mightmust B.canneed C.mustmust D.mustcan
糖耐量受损IGT的人表现为空腹血糖浓度正常负荷如饮食后血糖浓度升高异常．为了探究运动对IGT的干预情况受试者于餐后进行中等强度持续运动30min定时采样测定血糖浓度及胰岛素含量实验结果如图所示．由此分析推测错误的是
Itwasdarkcoldandwet.OnmywayhomeIcouldhearsomeone36.Thecryingwascomingfroma37boyofabout12yearsold.Hewasjustwearingaworn﹣outshirtto38himselffromthenight'scold.39enoughhewasholdingahundred﹣dollarbill.ThinkingthathehadbecomelostfromhisparentsIaskedhimwhatwas40. Hetoldmehissad41.Hesaidthathehadthreebrothersandfoursisters.Hisfatherdiedwhenhewasnineyearsold.His42waspoorlyeducatedandworkedtwopart﹣timejobs.Shemadeverylittleto43herlargefamilyhowevershehadmanagedtogive44hundreddollarstobuyherchildrensomeChristmaspresents. Theyoungboyhadbeen45byhismotheronthe46tohersecondjob.Hewastousethemoneytobuypresentsforallhisbrothersandsisters.Hehadnoteven47themallwhenanolderboyrobbedhimofoneofthetwohundred﹣dollarbillsanddisappearedintothe48Whydidn'tyoushoutforhelp?Iasked. Ididrepliedtheboy. But49cametohelpyou? Theboy50shookhisheadNoone51thatIwascrying.IwassofrightenedthatI52. ThatnightI53manyhoursbuyingpresentsforhimandhisfamilyandIalsohelpedhim54home.IjustwantedtotellhimBebravehelpwillalwayscome.Hiseyeswerefilledwithtearsandhegavemeawarmhug﹣themostexpensivegiftIhadever55.Iknewhewantedtotellmehewill. 36.A.sighing B.smiling C.crying D.whispering 37.A.poor B.bad C.kind D.careless 38.A.protect B.prevent C.separate D.benefit 39.A.Interestingly B.Personally C.Strangely D.Seriously 40.A.true B.lost C.broken D.wrong 41.A.news B.story C.result D.history 42.A.mother B.sister C.brother D.aunt 43.A.help B.treat C.support D.offer 44.A.several B.two C.one D.many 45.A.pickup B.droppedoff C.takenon D.putoff 46.A.trip B.way C.direction D.road 47.A.cleaned B.opened C.entered D.checked 48.A.dark B.room C.eye D.day 49.A.somebody B.anybody C.everybody D.nobody 50.A.sadly B.happily C.nervously D.friendly 51.A.forgot B.cared C.told D.thought 52.A.gaveoff B.gaveaway C.gaveup D.gaveout 53.A.cost B.took C.lost D.spent 54.A.back B.out C.up D.across 55.A.adopted B.received C.chosen D.accepted
toyourfriendandIamsurethatyou'llbebackplayingtogether. A.Talking B.Talked C.Talk D.Totalk
围绕“一带一路”建设位于我国西南一隅的中科院成都生物研究所构建出了一条“绿色”的“一带一路”．如图为该研究所与坦桑尼亚坦噶地方政府共建的世界上第一座大型剑麻废液沼气工程流程图请据图分析回答下列问题 1在自然生态系统中储存在剑麻体内的能量最终去向是．在人工种植的剑麻中其能量来源填“大于”“小于”或“等于”剑麻固定的全部太阳能． 2该项目有很大的发展前途可以利用剑麻废液进行沼气发电解决了废液出路问题实现了废弃资源的． 3剑麻生态系统的维持填“不需要”或“需要”人类的干预与草原生态系统相比该生态系统的抵抗力稳定性填“较强”“较弱”“相同”． 4从保护环境的角度分析该项目实施的意义是．
Longtimeagotherewasaseed种子andbecausehewasonlyaseednobodynoticedhim.Thusfeelinginferior低等的theseedgavenoimportancetohisexistence. Thenonedayawindpickedhimupandthrewhimonanopenfieldunderthesun.Laterhewasgivenrain. Yearslaterhesawatravelersittingbyhisside.ThankGodforthis.Ireallyneedsomerestheheardthetravelersay. Whatareyoutalkingabout?theseedquicklyasked.Hethoughtthemanwasmakingfunofhim.Nooneeverspoketohimlikethat. Whojustspoke?theshockedmanasked.Itisme.Aseed. Aseed?Themanlookedatthebigtree.Areyoujoking?Youarenotaseed.Youareabigtree! Really? Yes!Whyelsedoyouthinkpeoplecomehere? Whatdotheycomeherefor? Tofeelyourshade树阴!Don'ttellmeyoudidn'tknowyouhadgrownovertime. Amomentpassedbeforethetraveler'swordsbroughthimpride. Theseedthoughtandsmiledforthefirsttimeinhislife.Theyearsoftorture折磨bythesunandtherainfinallyhelpedhimgrowup. Oh!ThatmeansI'mnotalittleseedanymore!Iwasactuallyborntomakepeoplefeelcomfortable.Wow!That'sgreat! 21.Theseeddidn'trealizetheimportanceofhisexistencebecause. A.nobodylookedafterhim B.hewasthrownintotheopenair C.hewassuchasmallseed D.hedidn'tbelieveinhimself 22.Thetravelersatbytheseed'ssideto. A.escapefromtherain B.thankGodforofferinghimatree C.havearestandenjoytheshade D.talkwiththebigtree 23.Howdidtheseedfeelafterhearingthetraveler'swordsatlast? A.Sad. B.Proud. C.Funny. D.Sorry. 24.Wheredoesthepassagemostprobablycomefrom? A.Ahistorybook. B.Asciencebook. C.Astorybook. D.Anovel.
WhenIlivedinSpainsomeSpanishfriendsofminedecidedtovisitEnglandbycar.Beforetheylefttheyaskedmeforadviceabouthowtofindaccommodation住所.Isuggestedthattheyshouldstayat‘bedandbreakfast'housesbecausethiskindofaccommodationgivesaforeignvisitoragoodchancetospeakEnglishwiththefamily.Myfriendslistenedtomyadvicebuttheycamebackwithsomefunnystories. Wedidn'tstayatbedandbreakfasthousestheysaidbecausewefoundthatmostfamilieswereawayonholiday. Ithoughtthiswasstrange.FinallyIunderstoodwhathadhappened.MyfriendsspokelittleEnglishandtheythought‘VACANCIES'meant‘holidays'becausetheSpanishwordfor‘holidaysis‘vacancies'.Sotheydidnotgotohousewherethesignoutsidesaid‘VACANCLES'whichinEnglishmeanstherearefreerooms.Thenmyfriendswenttohousewherethesignsaid‘NOVACANCLES'becausetheythoughtthismeantthepeoplewhoownedthehousewerenotawayonholiday.Buttheyfoundthatthesehouseswereallfull.Asaresulttheystayedathotels! Welaughedaboutthisandaboutmistakesmyfriendsmadeinreadingothersigns.InSpanishtheword‘DIVERSION'meansfun.InEnglishitmeansthatworkmenarerepairingtheroadandthatyoumusttakeadifferentroad.Whenmyfriendssawtheword‘DIVERSION'onaroadsigntheythoughttheyweregoingtohavefun.Insteadtheroadendedinalargehold. Englishpeoplehaveproblemstoowhentheylearnforeignlanguages.OnceinParis.WhensomeoneofferedmesomemorecoffeeIsaid‘Thankyou'inFrench.ImeantthatIwouldlikesomemoreHowevertomysurprisethecoffeepotwastakenaway!LaterIfoundoutthat‘Thankyou'inFrenchmeans‘Nothankyou.' 5.MySpanishfriendswantedadviceabout. A.learningEnglish B.findingplacestostayinEngland C.drivingtheircaronEnglishroads D.goingtoEnglandbycar 6.Isuggestedthattheystayatbedandbreakfasthousesbecause. A.theywouldbeabletopracticetheirEnglish B.itwouldbemuchcheaperthanstayinginhotels C.itwouldbeconvenientforthemtohavedinner D.therewouldbenoproblemaboutfindingaccommodationthere 7.NOVACANCIESinEnglishmeans. A.nofreerooms B.freerooms C.notawayonholiday D.holidays 8.WhensomeoneofferedmemorecoffeeandIsaid‘Thankyou'inFrenchI. Adidn'treallywantanymorecoffee B.wantedthemtotakethecoffeepotaway C.reallywantedsomemorecoffee D.wantedtoexpressmypoliteness.
热门题库
更多
高三上学期数学
高一下学期英语
教案备课库
高一上学期生物
高一下学期生物
高二上学期数学
高二上学期物理
高二上学期英语
高二上学期生物
高二下学期数学
高二上学期化学
高二下学期物理
高三下学期物理
高三上学期物理
高三上学期生物
高三上学期化学
湘公网安备 43130202000226号