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下列①～④表示细胞不同结构的示意图，其中光合作用的场所为（ ）
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高三下学期生物《》真题及答案
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如图表示光合作用示意图abcd表示光合作用的有关原料产物则其中表示有机物的是
a
b
c
d
图7为光合作用示意图据图分析下列说法正确的是
X.表示氧气
Y.表示二氧化碳
光照是光合作用的必要条件
有机物是光合作用的原料
图7为光合作用示意图据图分析下列说法正确的是
X.表示氧气
Y.表示二氧化碳
光照是光合作用的必要条件
有机物是光合作用的原料
下图所示均与植物光合作用有关图甲表示AB两种植物光合作用效率随光照强度改变的变化曲线图乙表示将A植物
下图是植物光合作用过程示意图由图中箭头所示的方向可知水和二氧化碳进入叶片作为光合作用的原料其中水是通
下列①～④表示细胞不同结构的示意图其中光合作用的场所为
①
②
③
④
下图是植物光合作用过程示意图由图中箭头所示的方向可知水和二氧化碳进入叶片作为光合作用的原料其中水是通
如图A.为蓝藻细胞结构示意图B.为水绵细胞的结构示意图.请据图分析完成下列问题1与蓝藻细胞相比水绵细
图是植物光合作用过程示意图由图中箭头所示的方向可知水和二氧化碳进入叶片作为光合作用的原料其中水是通过
下列①～④表示细胞不同结构的示意图其中光合作用的场所为
①
②
③
④
6分右图是植物光合作用过程示意图由图中箭头所示的方向可知水和二氧化碳进入叶片作为光合作用的原料其中水
下列①～④表示细胞不同结构的示意图其中光合作用的场所为
①
②
③
④
如图为光合作用示意图.据图分析下列说法正确的是
A表示氧气、B表示二氧化碳
通过光合作用储存在有机物中的能量来源于光能
有光时只进行植物的光合作用
进行光合作用的场所是线粒体
图是植物光合作用过程示意图由图中箭头所示的方向可知水和二氧化碳进入叶片作为光合作用的原料其中水是通过
如图是植物光合作用示意图请据图回答问题1此图表示光合作用那么图中气体①是进行光合作用的场所是.2如果
下列①～④表示细胞不同结构的示意图其中光合作用的场所为
①
②
③
④
图是植物叶片的生理活动示意图图中①②③④分别代表不同的物质箭头表示物质进出的方向据图回答下列问题1光
下图是植物光合作用过程示意图由图中箭头所示的方向可知水和二氧化碳进入叶片作为光合作用的原料其中水是通
如图表示光合作用示意图abcd表示光合作用的有关原料产物则其中表示有机物的是
a
b
c
d
下图为叶绿体结构示意图下列有关叶绿体结构与功能的叙述错误的是
①和②具有选择透过性
③上既有光合色素又有与光合作用有关的酶
③和④上都有与光合作用有关的酶
有叶绿体的细胞才能进行光合作用
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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. WhileIwasconsideringwhatfoodtobuyinastoreayoungmanworkedthereaskedmehowIwasdoing.AsusualItoldtruth.HesaidI'llberightback.IthoughthewasanotherpersonwhothoughtItalkedtoomanyandpolitelyexcusehimself.Iwasheadingoutwhilehecamebackandhandedtomeabeautifulbunchofflowers.TiedtohimwasanotesayingHaveaHappyNewYear.Theactofthisyoungmanalmostmovedmetotear.Ithadbeenanextremedifficultday.Myheartwashurtandanangelcametotreatmewithkindness.
研究人员通过研究遮荫和全光对野生川贝母光合作用的影响为人工引种提供理论支持．图1中①～④为川贝母叶肉细胞内某些代谢过程图2为遮荫和全光条件下川贝母光合速率部分研究数据的曲线图图中光合有效辐射越强代表光照强度越强请分析回答 1图1中③和④发生反应的场所分别为和． 2图2光合有效辐射为a时川贝母叶肉细胞中能发生的图1反应有．填编号 研究人员进一步检测了川贝母叶片光合作用的相关参数结果如表 3植物中捕获光能的物质是可用溶剂提取获得． 4由图2直接可知川贝母人工引种的适宜条件是“遮荫”“全光”理由是在一定光合有效辐射下其．多选 A．呼吸速率更高B．净光合速率更高C．叶绿体数量更多D．有机物积累量更多 5请结合表中数据阐述遮荫与全光条件下光合速率出现图2差异的原因．
先天性夜盲症是一种由于遗传因素等引起的先天性眼病．某先天性夜盲症家系调查结果如图1所示II﹣3不携带致病基因相关基因为B/b． 1据图判断该病的遗传类型为． A．常染色体隐性B．常染色体显性C．伴X染色体隐性D．伴X染色体显性 2II﹣5的基因型为．现II﹣5怀孕后对II﹣6作了相关的基因检测其电泳结果如图2．若对胎儿进行基因检测结果可能有下列ABC三种．若结果为则说明胎儿患病若结果为则说明胎儿是携带者． 3II﹣5在16周时经检查发现胎儿患唐氏综合征某同学对该病进行了分析你认为合理的是多选． A．父亲或母亲在产生配子过程中第21号同源染色体未分离 B．父亲和母亲都提供含异常染色体的配子 C．父亲提供正常的配子与母亲提供含异常染色体的配子 D．胎儿体细胞的染色体组成一定为45+XX 4Ⅲ﹣11的夜盲基因的传递途径为．在一次体检中Ⅲ﹣11发现自己还患有红绿色盲基因为H/h家里其他人均不患此病则这两种致病基因在遗传上遵循遗传定律．通过咨询II﹣7和II﹣8若再生像Ⅲ﹣11那种情况的孩子比例约为20%可推测II﹣7的基因型为．
CalvinGilliandidn'tbelievethatNorwaywastheplaceforanadventurousholiday.Howeversomefriendstoldhimtogothereandhelovedit. I'manextreme﹣sportsmaniac.I'vetraveledtomanydifferentcountriesbutIdidn'texpectNorwaytobeagoodplaceforanextremeholiday.TouristsusuallyvisitNorwaybecauseofitsoldVikinghistoryortogofishingandboatinginthefamousfjords峡湾toenjoyarelaxingholidayortogoclimbingtoenjoythebeautyofnature.ButIdidn'tgoforfishingIwantedadventure. SkiingisthebestthingyoucandoinNorway.SvartisentheBlackIceglacier冰川iswonderful.Theiceisnottheusualwhitebutadeepbluecolorlikethesea.Howeveryouhavetowearspecialclothesbecauseskiingonamillion﹣year﹣oldglaciercanbeverydangerous. ThenthereisHunderfossenFamilyParkforTollPark.Youcangowaterskiingandiceskating.ItiscertainlyabeautifulplacebutitismoreexpensivethanvisitingotherpartsofNorway. IalsovisitedtheHomenkollenSkiJumpinOslo.Theviewfromthetopoftheskijumpwaswonderfulandthetheskimuseumwasveryinteresting.Iwantedtotryajumpbutunfortunatelyit'sonlyforprofessionalski﹣jumpers.AnywayIwasverytiredandIneededabreaksoIwentbacktomyhotelandgotsomesleep. NextyearIamgoingtotakemygirlfriendtoNorwaytoo.SheishavingherholidayinAustralianowandshewantstohaveadifferenttypeofadventurefornextyear. 1Theunderlinedwordmaniacinpara.2referstosomeonewho. A.Hasastronginterestinsomething B.Hasabadopinionofsomething C.Expectsthingstobesuccessful D.Likestocompetewithothers 2WhatdidCalvinGilliandoinNorway? A.Ski﹣jumping B.Climbing C.Fishing D.Skiing 3What'sthebesttitleforthetext? A.CalvinGillian'sHolidayCountries B.TravelinDifferentCountries C.HistoricalPlacesinNorway D.ANorwegianAdventure
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遗传 帕金森病在我国属于第二大常见的神经系统退行性疾病研究证明SNCA基因的突变会导致突触传递障碍是帕金森病产生的原因之一现对某家族SNCA基因突变造成的帕金森病调查相关系谱图如图1请回答下列问题 1据图分析SNCA突变基因导致的帕金森病遗传属于． A常染色体显性遗传病 B常染色体隐性遗传病 C伴X染色体显性遗传病 D伴X染色体隐性遗传病 判断依据是． 2若SNCA突变基因用A/a表示则第Ⅲ代4号的基因型为． 3第Ⅲ代4号与一正常人婚配生下正常孩子的概率为．为避免SNCA突变基因的遗传第Ⅲ代4号在孕期需进行． 4第Ⅲ代6号与一正常人婚配生下的第一个孩子意外的也患有帕金森下列推断合理的是多选 A．正常情况下第Ⅲ代6号与其丈夫所生的孩子都正常 B．第Ⅲ代6号神经细胞中SNCA基因发生了突变 C．丈夫的生殖细胞中SNCA基因发生了突变 D．第一个孩子在胚胎发育过程中SNCA基因发生了突变 5研究发现有些帕金森病的发病原因是由于一种小RNAmiRNA影响SNCA基因表达所导致其调控过程如图2所示下列关于这类帕金森病的分析正确的是多选． A．miRNA阻碍了SNCA基因的转录过程 B．这类帕金森病的遗传特性与图1家族相同 C．miRNA基因与SNCA基因的部分碱基序列相同 D．miRNA的调控发生在细胞质中
MakingbeersonthemoonmightseemlikeapipedreamtomanybutforagroupofstudentsfromtheUniversityofCaliforniaatSanDiegothereisachancetotaketheirresearchbeyondEarth'ssurface. TheLab2MooncompetitionheldbyTeamIndusisofferingstudentsthechancetosecureaspotontheTeamIndusrocketthisyear. Takingcraftbeertothenextlevelthestudentswanttotestwhetherit'spossibleforyeast酵母toworkandcreatebeeronthemoon.Howevertheybelievetheexperimentisnotjustacreativeconceptforastronautsit'salsoimportantforthedevelopmentofdrugsandyeast﹣containingfoodlikebread. TheideastartedoutwithafewlaughsamongagroupoffriendssaidNeekiAshariafifth﹣yearbioengineeringstudentsatUCSanDiego.Weallappreciatethecraftbeer.WhenweheardthattherewasanopportunitytodesignanexperimentthatwouldgouponIndia'smoonlanderwethoughtwecouldcombineourhobbywiththecompetitionbyfocusingonthepracticalityofyeastinouterspace. Thepreparationworkforthebeer﹣uptothestageofaddingyeast﹣willallbedoneonEarthandratherthanseparatingthefermentation发酵andcarbonationstageofmakingbeertheteamplanstocombinethem. ThisremovestheneedtoreleaseCO2accumulatedintheprocesswhichmayresultincleanlinessandsafetyissuesoutinspace. IfselectedTeamOriginalGravitywillbethefirsttomakebeerinouterspaceandthefermentationwilltakeplaceinacontainernobiggerthanasodacan. AllteamscompetingfortheplacewillshowcasetheirideasinBangaloreIndiainMarch. Sadlyyouwon'tbeenjoyingmoonbeerinyourlocalcraftbeerbaranytimesoonasnosampleswillbebroughtback.Howeverthissmallexperimentcouldprovideimportantdataonjusthowpracticalitisforustomakeandcreateourownresourcesonotherplanetsandmoonsbylearninghowconsumables消耗品behaveindifferentenvironments. 1Howdidthestudentsfeelwhentheygotthechancetodesigntheexperiment? A.Excited. B.Nervous. C.Confident. D.Casual. 2WhatdoestheunderlinedwordThisinParagraph6referto? A.Themixingoftwostages. B.AddingyeastonEarth. C.ThepreparationworkonEarth. D.Fermentationandcarbonation. 3Whatcanwelearnabouttheexperimentfromthepassage? A.Ithasbeendesignedbasedonsimilarexperiments. B.It'squitecompetitivecomparedwithotherdesigns. C.It'sdesignhasalreadybeenapprovedbyTeamIndus. D.Itsprocesswasadaptedtomakeitsaferandgreener. 4Whatdoestheauthorthinkofthestudents'idea? A.Itseemslikeapipedream. B.It'sextremelycomplicated. C.It'smeaningfulandhopeful. D.It'screativebutimpractical.
某种植物细胞减数分裂过程中先后出现了如图甲乙丙丁的几个特定时期．下列叙述正确的是
下列各项植物培养中属于组织细胞培养技术的是
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如图为正常人体细胞部分染色体组图下列选项中属于唐氏综合症病因的是
植物代谢 科学研究发现植物在光照条件下进行光合作用的同时也能发生“光呼吸”作用．光呼吸是植物在光照和高氧条件下消耗氧气损耗能量并且生成二氧化碳．RuBP反应物15﹣二磷酸核酮糖和Rubisco催化剂15﹣二磷酸核酮糖羧化酶/加氧酶有两种作用在光合作用中RuBP在Rubisc催化下生成能量获得碳素卡尔文循环在光呼吸中RuBP在Rubisco催化下也能消耗能量释放碳素．具体过程如图所示请回答下列问题 1光合作用的场所是细胞器暗反应卡尔文循环发生在其部位暗反应为光反应的进行提供． 2据图可知光呼吸与光合作用都利用了为原料但光合作用在暗反应阶段实现了该物质的再生而光呼吸则将该物质彻底氧化分解生成．暗反应卡尔文循环中RuBP转化成PGA的过程称为． 3有观点指出光呼吸的生理作用在于干旱天气和过强光照下因为温度很高蒸腾作用很强气孔大量关闭供应减少此时的光呼吸可以消耗光反应阶段生成较多的而光呼吸产生的CO2又可以作为暗反应阶段的原料因此光呼吸对植物有重要的正面意义． 4下列有关“光呼吸”和“细胞有氧呼吸”的比较其中正确的是多选 A．“光呼吸”与“细胞有氧呼吸”一样都消耗了氧气释放出二氧化碳 B．“光呼吸”发生在叶绿体中而“细胞有氧呼吸”发生在线粒体中 C．“光呼吸”消耗ATP而”细胞有氧呼吸”呼吸则产生ATP D．“光呼吸”的发生必须要在有光的条件下而“细胞有氧呼吸”则与光照条件无关 5分析如表遮光条件下植物积累的有机物最多结合已学的生物学知识和图中的信息从两个方面解释该条件下为什么比不遮光条件下的积累的有机物多．
HowtoMakeFriends Friendshipisaveryimportanthumanrelationshipandeveryoneneedsgoodfriends.Goodfriendshiphasmanybenefits.Itofferscompanionshipimprovesself﹣worthandpromotesgoodhealth.Therearetimesinourlivessuchaswhenwehaverecentlymovedintoanewtownorchangedourjobsorschools.Suchchangesoftenleavesuswithoutafriend1.Butformanyofustheprocessisdifficultandrequirescourage.Belowaresomehelpfulsuggestionsonhowtomakeandkeepfriends. 1.Associatewithothers. Thefirststeptomakingfriendsisassociatingwithotherpeople.Youcangotopublicplacestomeetnewpeople.Besidesyouwillneedtomakeyourselfknownbybecominganactivememberofsuchplaces. 2.Startaconversation Startingaconversationisthesecondmostimportantstepinmakingnewfriends.2Youcanalwaysstarttheconversation.Beingabletomakesmalltalkisaveryusefulskillinrelatingwithotherpeople. 3.3 Choosingfriendswithcommoninterestsisimportantinbuildingfriendshipastheseinterestswouldalwaysbringyouandyourfriendtogether.Hangingoutwillalwaysbeapleasantexperience. 4.Letitgrow. Itisagoodthingtostayintouch.Howevertrynottopressyournewfriendwithcallsmessagesorvisitsasthiswouldlikelywearhimorheroutandfinallyyoumayloseyourfriend.4Thebestfriendshipsaretheonesthatgrownaturally. 5.Enjoyyourfriendship Thebestwaytoenjoyyourfriendshipistoallowyourfriendstobethemselves.5Trynottochangethemfromwhotheyaretowhatyouwantthemtobe.Becomethekindoffriendyouwillwantyourfriendtobetoyou. A.Becheerful. B.Dothingstogether. C.Donotwaittobespokento. D.Trynottofindfaultwithyourfriends. E.Makingnewfriendscomeseasyforsomepeople. F.Forafriendshiptodevelopyouneedtostayintouch. G.Soyouwillneedtogiveyourfriendtimetoreacttoyou.
关于线粒体的起源有多种观点其中“内共生起源”学说认为真核细胞中的线粒体是由侵入细胞或被细胞吞入的某种原核细胞经过漫长的岁月演变而来的．请结合所学知识和图1作答． 1图1中乙所示的过程体现了细胞膜具有的结构特点是原始真核细胞吞噬某些原始原核生物具有选择性是与其细胞膜上的物质有关． 2研究发现线粒体的内外膜的化学成分和功能是不同的据图分析最可能的原因是． 如图2表示细胞周期以及一个细胞周期结束后可能出现的几种状态．图中箭头长度表示各时期所占比例[]中填写图中的标号 3胸腺嘧啶核苷TdR可抑制细胞DNA合成它主要作用于图中的[]时期． 4由图2可知一次分裂结束后细胞可能出现的状态包括．多选 A．继续下一个细胞周期B．分化为无增殖能力的细胞 C．细胞凋亡D．进入G0期成为暂不增殖细胞 5如果细胞内存在DNA解旋的现象则此时细胞可能处于．多选 A．S期B．G2期C．分裂期中期D．分裂期后期 6据图2信息可以推断细胞周期的长短主要取决于哪个时期的长短阐明理由．．
在紫色洋葱鳞片叶外表皮细胞的失水和吸水实验中显微镜下可依次观察到如图所示甲乙丙三种细胞状态．下列叙述正确的是
AliceMooreisateenagerentrepreneur创业者whoinMay2015setupherbusinessAilieCandy.Bythetimeshewas13hercompanywasworthmillionsofdollarswiththeinventionofasuper﹣sweettreatthatcouldsavekids'teethinsteadofdestroyingthem. ItallbeganwhenMoorevisitedabankwithherdad.Ontheoutingshewasofferedacandybar.Howeverherdadremindedherthatsugarytreatswerebadforherteeth.ButMoorewassickofmissingoutoncandies.SoshedesiredtogetroundthewarningWhycan'tImakeahealthycandythat'sgoodformyteethsothatmyparentscan'tsaynotoit?WiththatinmindMooreaskedherdadifshecouldstartherowncandycompany.Herecommendedthatshedosomeresearchandtalktodentistsaboutwhatahealthiercandywouldcontain. Withherdad'spermissionshespentthenexttwoyearsresearchingonlineandconductingtrialstogetarecipethatwasbothtastyandtooth﹣friendly.Shealsoapproacheddentiststolearnmoreaboutteethcleaning.Consequentlyshesucceededinmakingakindofcandyonlyusingnaturalsweetenerswhichcanreduceoralbacteria. Moorethenusedhersavingstogetherbusinessofftheground.AfterwardssheandherfathersecuredtheirfirstbusinessmeetingwithasupermarketownerwhofinallyagreedtosellMoore'sproduct﹣CanCandy. AsCanCandy'ssuccessgrowssodoesMoore'scredibilityasayoungentrepreneur. Mooreisenthusiasticaboutthecandyshecreatedandshe'salsopositiveaboutwhatthefuturemightbring.Shehopesthateverykidcanhaveacleanmouthandabroadsmile. Meanwhilewithherparents'helpMooreisgenerallyabletoliveanormalteenagelife.Althoughshefoundedhercompanyearlyoninlifeshewasn'tdrivenprimarilybyprofit.Moorewantstouseheruniquetalenttohelpothersfindtheirsmiles.Shedonates10%ofAilieCandy'sprofitstoBigSmiles.WithhertalentanddeterminationitappearsthattheskycouldbethelimitforAliceMoore. 1HowdidMoorereacttoherdad'swarning? A.Shearguedwithhim. B.Shetriedtofindawayout. C.Shepaidnoattention. D.Shechosetoconsultdentists. 2WhatisspecialaboutCanCandy? A.Itisbeneficialtodentalhealth. B.Itisfreeofsweeteners. C.Itissweeterthanothercandies. D.Itisproducedtoadentists'recipe. 3WhatdoesMooreexpectfromherbusiness? A.Toearnmoremoney. B.Tohelpothersfindsmiles. C.Tomakeherselfstandout. D.Tobeatothercandycompanies. 4WhatcanwelearnfromAliceMoore'sstory? A.Fameisagreatthirstoftheyoung. B.Ayouthistoberegardedwithrespect. C.Positivethinkingandactionresultinsuccess. D.Successmeansgettingpersonaldesiressatisfied.
FoodisahotissueinChina.Eating.1considertobeanimportantpartofeachdayisfarbeyondsimplymeetinganeed2nowpeoplesometimeshardlyhavetimetoenjoytheirfoodbecausetheyarelivinginafast﹣pacedsociety.Theyneedfastfood.That's3China'sfast﹣foodmarketexpands. Thefirstforeignfast﹣foodrestauranttoarriveinChinawascalledKFCquicklyfollowedbyPizzaHutMcDonaldsandsoon.Withthe4developofChinaforeignfast﹣foodchainsarerealizinghigh﹣speedgrowthinChina.Howeverbeingunable5providebalancednutritionthesejunkfoods6criticizebyhealthexpertsforalongtime.Theexpertsalsoshowthatsomeforeignfast﹣foodconsists7certaincancer﹣causingchemicals. 8actualtheChinesedietcontainsmanyofitsown9traditionfast﹣fooddishes.AmongthemdumplingssoybeanmilkandnoodlesarethemostpopularComparedwithforeignfastfood.thosearehealthierButmanyChinesestillenjoythespecialtasteandthegoodenvironmentintheforeignfast﹣foodchains.It'shightimethatthey10wakeuptothefactofthepotentialriskswithforeignfast﹣food.
将沾有5%HCl溶液的小纸片贴于去除皮肤的脊蛙脚趾后正常情况下曲腿反射反射弧的传入神经元电位变化情况为
如表是健康人组A组和Ⅰ型糖尿病肾病患者组B组相关生化指标检测所得到数据．下列说法正确的是
下列为烟草花叶病毒具有的物质或结构是
RegardlessoftheweatherorthedistancePaulWilsonwillmakesurelow﹣incomestudentsinhisneighborhoodarriveattheircollegeclassesontime. Aretiredengineer76﹣year﹣oldWilsonhasbeen1freeridestocollegestudentsforthepasteightyears.Sincehefirststarted2hiscartotheyoungpeopleWilsonhas3anastonishing64000milesandhashadcountlesspleasantandoftenhumorous4withthestudentshetransportstoandfromschool.Thestudentswhohe's5havegoneontobecomephysiciansteachersandengineersbutwhatthey'vealsogotoutoftheirtimeinschoolisfindingarolemodelandafriendinWilson.Somestudents6callhimGrandpa. TinaStern7ridesfromWilsonforallherfouryearsincollegeandthetripsmeantmuchmoretoherthanjustfree8.It'snotjustarideyou'renotjustsittingtherein9silenceorwithyourheadphonesonSternsaid.Heasksyouquestionsandactually10theanswerssothenexttimeyouridewithhimhe'll11thosethings. Wilsonfirstworkedasadriverthroughastudent﹣supportprogrammeofthenon﹣profitorganisationOnPointforCollege.Althoughthe12asksthemembersonlytodrivestudentstoandfromtheirclassesWilsonoftengoes13toensurethewelfareandsafetyofthestudents.Iftheyhaveproblemswithregistration.Wilsonisthereto14them.IftheyrunoutofcertaindailynecessitiesWilsonwilldrivetotheneareststoreandpurchasewhat'sneeded.IfastudentgetshungryonthelongdrivestoandfromschoolWilsonnever15tobuythemameal. FormanystudentsWilson'shelpisnotonlyappreciatedit'salsoentirely16forthemtobeabletocompletetheircollegeeducation.Somestudentsdon'thaveareliablecarwhileothershaveto17vehicleswithparentswhoworksixdaysaweek.ForthemridingwithWilsonhas18themtocompletetheireducation﹣butaccordingtoWilsonhebenefitsjustasmuchfromthe19.IjustlovedrivingandIlovethesekidsWilsonsaid.It'ssuchan20tobeapartofthesekids'livesevenjustforafewhoursgettingtoknowthemandhearingtheirstories. 1A.linking B.sending C.offering D.distributing 2A.donating B.lending C.delivering D.volunteering 3A.paved B.covered C.measured D.wandered 4A.arguments B.interviews C.negotiations D.conversations 5A.met B.driven C.addressed D.greeted 6A.even B.ever C.once D.already 7A.earned B.received C.assessed D.demanded 8A.transportation B.style C.time D.communication 9A.forced B.awkward C.ridiculous D.suspicious 10A.selects B.recites C.guesses D.remembers 11A.acton B.settleon C.checkon D.agreeon 12A.club B.league C.college D.programme 13A.far B.around C.beyond D.forwards 14A.assist B.watch C.urge D.warn 15A.expects B.attempts C.manages D.hesitates 16A.extra B.unusual C.necessary D.adequate 17A.share B.fuel C.repair D.exchange 18A.required B.allowed C.reminded D.convinced 19A.experience B.arrangement C.appreciation D.employment 20A.effort B.ambition C.privilege D.convenience
某同学研究了水稻的抗稻瘟病与感稻瘟病用G/g表示和晚熟与早熟用F/f表示两对性状．他用纯种抗病早熟水稻与感病晚熟水稻杂交F1全部是抗病晚熟水稻．F1自交后F2表现型种类及数目如表所示请据此推断F1中两对基因的位置关系是
某地区甲虫的抗药性如图所示据图判断
使用显微镜目镜测微尺在低倍镜10×下测量变形虫测得虫体长占10格转换高倍镜40×后虫体所占格数为
1Surveysareabouttheboysandgirlsfrom. A.China B.Japan C.America D.England 2Thepercentageofgirlssingingkaraokeis. A.63 B.83 C.42 D.27 3Thepeoplewhohavecell/carphonesareintheagegroupof. A.15﹣29 B.10﹣14 C.11﹣15 D.20s 4Whatwouldtheboysandgirlsmostliketodo? A.Travelabroad B.Singkaraoke C.Ownvideogames D.Smoke
现有一种治疗晚期急性淋巴细胞白血病ALL的新型疗法即通过基因工程对患者的T细胞进行改造使其能够识别并摧毁ALL细胞达到治疗效果．该免疫疗法属于
蛋白酶的产业化需要其活性在固定化处理时不受损失且在多次重复使用后仍能维持稳定的活性图中正确的是
假定你是李华你观看了你的英国好友Leslie参加的学校英语演讲比赛直播.他的演讲SuccessComesfromHardWork获得了一等奖.请你给他写一封邮件内容包括 1.表示祝贺 2.评论与赞赏 3.表达祝愿. 注意 1.词数100左右 2.可适当增加细节以使内容连贯 3.开头与结尾已给出但不计入总词数. DearLeslie Yours LiHua
在肝脏中甘油和脂肪酸合成为甘油三脂将其携带并运输到血浆中的脂蛋白主要是
人体上皮细胞每天都在新生和脱落其产生新细胞的方式是
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