2019-2020年高二下学期期末考试生物试题 含答案(VII)

1、2019-2020年高二下学期期末考试生物试题含答案（VII）本试卷分第I卷（选择题）和第II卷（非选择题）两部分。第I卷-4页，第II卷5-6页。试卷满分100分。考试时间90分钟。请将正确答案填在答题卡的相应位置，否则答题无效！第I卷（单选题20小题共60分）1. 将新鲜的苔藓植物叶片放入少量红墨水、浓度为30%的蔗糖溶液中，在低倍镜下观察如右图所示状态。、处的颜色分别是A. 红色、绿色B.绿色、红色C.红色、无色D.红色、红色2. 如图表示在某pH范围内酶A和酶B所催化的反应速率，下列有关说法正确的是A.酶B比酶A活跃B.酶A存在于唾液中C.酶B的最适pH是1.8D.pH为4时，酶A的活

2、性较高3. 下列有关ATP的叙述正确的是 ATP是生物体内主要的贮存能量的物质 ATP的能量主要储存在腺苷和磷酸之间的化学键中 在有光条件下，叶绿体中才能合成ATP ATP在细胞内的含量很少，但转化速度很快 线粒体是蓝藻细胞产生ATP的主要场所 酵母菌在有氧和无氧条件下，细胞质基质中都能形成ATPA. B.C.D.4. 在自然条件下，有关植物细胞呼吸的叙述中，不正确的是A. 无氧呼吸生成少量ATPB. 葡萄糖是细胞呼吸最常利用的能源物质C. CO2既是有氧呼吸的产物也是无氧呼吸的产物D. 有氧呼吸过程中葡萄糖中的氧原子的转移途径是：葡萄糖一丙酮酸一也05. 右图表示氧气浓度对培养液中草履虫、乳

3、酸菌、酵母菌的细胞呼吸的影响，曲线a、b、c分别代表了A. 酵母菌、草履虫、乳酸菌B.酵母菌、乳酸菌、草履虫C.乳酸菌、酵母菌、草履虫D.草履虫、乳酸菌、酵母菌6. 右图表示植物光合作用的一个阶段，下列各项叙述正确的是B.C3生成C6H12O6需要H、ATP和多种酶36126c提高温度一定能促进c6hi2o6的生成6126D.无光条件有利于暗反应进行7. 植物吸收矿质元素受内外因素的影响，下列叙述错误的是A. 呼吸抑制剂可降低植物对矿质元素的吸收B. 在一定范围内，植物对矿质元素的吸收随温度的增加而增加C. 根吸收水分和吸收矿质元素是没有关联的D. 光合作用受阻一段时期后，有机物缺乏，影响根吸

4、收矿质元素8. 科学家温特做了如下实验：把切下的燕麦尖端放在琼脂块上，几小时后，移去胚芽鞘尖端，将琼脂块切成小块。再将经处理过的琼脂块放在切去尖端的燕麦胚芽鞘一侧，结果胚芽鞘会朝对侧弯曲生长。但是，如果放上的是没有接触过胚芽鞘尖端的琼脂块，胚芽鞘则既不生长也不弯曲。该实验证明了A. 生长素只能从形态学上端运输到形态学下端B. 造成胚芽鞘弯曲的刺激是某种化学物质C. 生长素的化学本质是吲哚乙酸D. 胚芽鞘会弯向光源生长9. 关于同一个体中细胞有丝分裂和减数第I次分裂的叙述，正确的是A. 两者前期染色体数目相同，染色体行为和DNA分子数目不同B. 两者中期染色体数目不同，染色体行为和DNA分子数目

5、相同C. 两者后期染色体行为和数目不同，DNA分子数目相同D. 两者末期染色体行为和数目相同，DNA分子数目不同10. 下列关于膝跳反射的叙述，错误的是A.反射活动由一定的刺激引起B.反射活动中兴奋在突触处双向传递C.反射活动的发生需要反射弧结构的完整D.反射活动中需要神经递质参与兴奋的传递11.如图表示甲状腺活动调节的示意图。下列对这一调节的叙述不正确的是A. 乙结构的活动只受甲结构所释放的激素进行的调节B. 血液中的甲状腺激素含量起着反馈调节的作用C. 甲与乙结构分别表示下丘脑和垂体D. a与b物质分别表示促甲状腺激素释放激素和促甲状腺激素12. 关于动物内环境稳态的叙述，错误的是A. 血

6、浆渗透压与蛋白质含量有关，与无机离子含量无关B. H2CO3/NaHCO3是维持细胞外液pH稳定的缓冲物质C. 细胞内、外的Na+、K+分布不平衡状态是通过消耗能量来维持的D. 运动后Na+、K+排出体外较多，但机体的内环境仍维持相对稳定状态13. 有关植物组织培养的叙述，错误的是A. 取植物的茎尖进行植物组织培养可以获得无病毒的植株B. 植物组织培养的原理是植物细胞具有全能性C. 利用花药离体培养的方法可以获得单倍体植株，此过程属于无性生殖D. 植物组织培养具有取材少、周期短、繁殖率高等优点14. 针对耐药菌日益增多的情况，利用噬菌体作为一种新的抗菌治疗手段的研究备受关注，下列有关噬菌体的叙

7、述，正确的是A. 外壳抑制了宿主菌的蛋白质合成，使该细菌死亡B. 以宿主菌DNA为模板合成子代噬菌体的核酸C. 利用宿主菌的氨基酸合成子代噬菌体的蛋白质D. 能在宿主菌内以二分裂方式增殖，使该细菌裂解15. 假设一个双链均被32P标记的噬菌体DNA由5000个碱基对组成，其中腺嘌吟占全部碱基的20%。用这个噬菌体侵染只含31P的大肠杆菌，共释放出100个子代噬菌体。下列叙述正确的是A. 该过程至少需要3x105个游离的鸟嘌吟脱氧核苷酸B. 噬菌体增殖需要细菌提供模板、原料和酶等D. 该DNA发生突变，其控制的性状即发生改变C. 含32P与只含31P的子代噬菌体的比例为1:4916. DNA分子

8、模板链上的碱基序列携带的遗传信息最终翻译的氨基酸如下表，则下图所示的tRNA所携带的氨基酸是（注：反密码子是从携带氨基酸的一端开始读码）A.赖氨酸B.丙氨酸C.半胱氨酸D.苏氨酸17. 对于人类的某种遗传病，在被调查的若干家庭中发病情况如下表。据此所作推断，最符合遗传基本规律的一项是（注：表中+为发现该病症表现者，一为正常表现者；且每个类别的家庭数为100150）类别父亲母亲儿子I+II+III+女儿+一+一A. 第I类调查结果说明，此病一定属于X染色体显性遗传病B. 第II类调查结果说明，此病一定属于常染色体隐性遗传病C. 第III类调查结果说明，此病一定属于隐性遗传病D. 第W类调查结果说

9、明，此病一定属于隐性遗传病18. 某对表现型正常的夫妇生出了一个红绿色盲的儿子和一个表现型正常的女儿，该女儿与一个表现型正常的男子结婚，生出一个红绿色盲基因携带者的概率是1/2B0未成熟个体成熟个体衰老个体C1/6D1/810080604020生活着一种动物，其种群数量多年维持相对稳定。该动物个体从出生到性成熟需要6个月。下图为某年该动物种群在不同月份的年龄结构（每月最后一天统计种群各年龄组成个体数）。关于该种群的叙述，错误的是A. 该种群10月份的出生率可能为零B. 天敌的迁入可影响该种群的年龄结构C. 大量诱杀雄性个体不会影响该种群的密度D. 该种群的年龄结构随季节更替而变化20. 人类的

10、皮肤含有黑色素，皮肤中的黑色素的多少由两对独立遗传基因（A和a,B和b）控制显性基因A和B可以使黑色素量增加，两者增加的量相等，并可以累加。一个基因型为AaBb的男性和一个基因型为AaBB的女性结婚，下列关于其子女皮肤颜色深浅的描述中错误的是A. 可产生4种表现型B. 肤色最浅的孩子基因型是aaBbC. 与亲代AaBB表现型相同的有1/4D.与亲代AaBb皮肤颜色深浅一样的有3/8第II卷（非选择题）说明：1、请将正确答案填在答题卡相应位置,否则不得分2、此部分共4大题，其中21-22题每空2分；23题每空1分。21题10分，22题12分，23题8分，24题10分，共40分。21. （10分）

11、大豆种子萌发过程中鲜重的变化曲线如图：djilE雷阶段1盼段IIMil)种子休眠种植后时间一（1）阶段I中，水进入种子胚细胞的穿（跨）膜运输方式为。（2）若测得阶段II种子吸收氧气与释放二氧化碳的体积比为1:3，则此时种子胚细胞的无氧呼吸与有氧呼吸消耗葡萄糖之比为。（3）大豆幼苗在适宜条件下进行光合作用时，若突然停止旳?供应，短时间内叶绿体中C5和ATP含量的变化分别为、。大田种植大豆时，施用农家肥的主要目的是通过来提高光合作用强度以增加产量。21.（12分）下图是与人体稳态相关的结构示意图，图中表示生理过程，字母表示相应激素，据图回答以下问题：肾单位p2來自中枢的剌激下丘脑垂体细胞(1) 图

12、中b指是的，过程中属于反馈抑制过程的。(2) 用激素c饲喂小鼠，再放入密闭容器中，其对缺氧的敏感性将(提高/降低)。(3) 的两个神经元细胞之间可以完成电信号转变为化学信号再转变为电信号的过程，完成这一过程的结构称为。(4) 如果电刺激图乙中I部位，此时I部位膜外的电位是电位；若饮水不足，则会引发图乙的调节过程，其中物质d的名称和作用分别为。食物捕矗、植物植食性鸟兔子老鼠虫青娃蛇鹰植食性鸟Oioo%兔子Oioo%老顒Oioo%虫0100%青蛙Oioo%蛇*050%050%鹰Oio%030%040%020%23(8分)下表统计了某生态系统内各相关物种之间食物的比例关系。回答下列有关问题：除第二营

13、养级以外，具有竞争食物关系的调查兔子的种群密度常采用的方法二二二同化的鑑童用于生长发育繁殖的能童*6决定兔子种群密度的因素是分解者利用的能量下图是兔子同化能量的分配，请在图中虚线框内填上相应内容。假如相邻营养级之间的能量传递效率均为20%，按照表中食物的比例，鹰同化1kJ量需植物间接提供kJ能量。24.（10分）桃树的蟠桃果形对圆桃果形为显性，其中蟠桃果形具有较高的观赏性。已知现有蟠桃树种均为杂合子，欲探究蟠桃是否存在显性纯合致死现象（即1H个体无法存活），研究小组设计了以下遗传实验，请、If、一/,*补充有关内容。实验方案：，分析比较子代的表现型及比例；请写出遗传图解（要求写出配子，4分）:

14、（2）预期实验结果及结论：如果子代，则蟠桃存在显性纯合致死现象；如果子代，则蟠桃不存在显性纯合致死现象。桂林中学xx下学期高二年级期末考试生物科参考答案12345678910ADBDABCBCB11121314151617181920AACCCDDDCC21. （1）自由扩散（2）6:1（3）增加（升高）；增加（升高）；提高C02浓度22. （1）促甲状腺激素；提高（3）突触（4）负；抗利尿激素，促进肾小管、集合管重吸收水，减少尿量23（1）蛙蛇_（2）鹰与蛇（3）标志重捕法；出生率和死亡率（迁入率和迁出率）（4）呼吸作用散失的能量；流向下一营养级的能量（5）9524.（1）杂合子蟠桃自交。遗

15、传图解略（2）表现型为蟠桃和圆桃，比例为2：1，表现型为蟠桃和圆桃，比例为3：12019-2020年高二下学期期末考试英语含答案第一部分:听力（共两节,满分30分）第一节（共5小题;每小题1.5分,满分7.5分）听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。1. Howdoesthemanehere?A. Bybus.B.Bytaxi.C.Bycar.2. Whyisn'tHelenpresent?A. Sheforgottoe.B.Shech

16、angedherdecision.C. Shewasn'tinvited.3. What'stheprobablerelationshipbetweenthetwospeakers?A. Husbandandwife.B.Motherandson.C.Doctorandpatient.4. What'stheman'sjob?A. Ashopassistant.B.Atailor.C.Asalesman.5. Whatdoesthemanmean?A.Hecan'tgotothecinema.B. HecangotothecinemaonSaturday

17、morning.C. HecangotothecinemaonSaturdayevening.第二节（共15小题；每小题1.5分,满分22.5分）听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有5秒钟的时间阅读各个小题；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。请听第6段材料,回答第6、7题。6. Whenwillthemangoonholiday?A.Inspring.B.Insummer.7.Whereisthemangoing?A.Switzerland.B.Italy.请听

18、第7段材料,回答第8至10题。8.Whatistheman?A.Abusinessman.B.Asalesman.C.Inwinter.C.Austria.C.Ascientist.9.Wheredoesthisconversationmostprobablytakeplace?A.Onatrain.B.Onabus.C.Onaplane.10.Whyisthewomantraveling?A.Sheistravelingonholiday.B.Sheistravelingonbusiness.C.Sheistravelingtogivesomelectures.请听第8段材料,回答第11至1

19、3题。11. Whyisthewomancalling?A. Tobuyatable.B. Tobookatable.C. Toservelunch.12. Whendoesthisrestaurantstopservinglunch?A.1pm.B.2pm.C.3pm.13. Howmanypeoplewillewiththewomanforlunch?A.One.B.Two.C.Four.请听第9段材料,回答第14至17题。14. Whatistheman?A.Anurse.B.Adoctor.C.Achemist.15. Whatiswrongwiththewoman?A. Sheisw

20、etallover.C.Shehashadacoughforthree16. WhatdoesthemantellthewomanA. StayinbedforsometimeandB. Goaroundfromtimetotime.B. Shehasabadheadache.days.todo?takesomemedicine.C. etoseehimtomorrowmorning.17. Wheredoesthisconversationmostprobablytakeplace?A. Inagarden.B.Intheman'soffice.C. Inthewoman's

21、house.请听第10段材料,回答第18至20题。18. Whatisthemaintopicofthepassage?A. TheBarcelonaOlympicGames.B.TVprogramsonChinesetelevision.C.Effectsoftelevisiononourlives.19. Wherewasthesurveyof300youngstersmade?A. InShanghai.B.InWuhan.C.InBeijing.20. Accordingtothepassage,whatisquicklytakingtheplaceofprintedmateriala

22、sthemajorsourceofnewsformostChinese?A. TheInternetB.TelevisionC.Radio第二部分：知识运用（共两节,满分45分）第一节：单项填空（共15小题，每小题1分，满分15分）从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。21Excuseme,canyoutellmehowIcangettothenearesthospital,please?Mm,letmethink.Oh,yes!It'spastpostoffice,nexttobank.A.a;aB.a;theC.the;aD.the;th

23、e22AsastudentinSeniorThree,Imustworkhard,IshouldtakeexercisetostrengthenmybodyA.OtherwiseB.MeanwhileC.ThereforeD.Thus23Hello,Sally.How'severythinggoing?AThesametoyouBIcan'tagreemoreCThat'srightDSurviving24.Hey!Anyideaaboutlearningabroad?YougoogletheCollegeBoardtolearnthenamesofcollegeyou

24、beinterestedinA.may;needB.can;mightC.will;shouldD.shall;must25WiththevictoryattheFrenchOpen,LiNahasreachedNO4intheworld,thepreviousAsianrecordAequaledBequalingCtohaveequaledDhavingequaled26Yourmeaningdidn'treally,John.Ididn't.Agetthrough;makeitBgetin;catchitCgetaway;helpitDgetacross;getit27I

25、willvisitAustriatheinvitationofmyfriendthissummervacationAbyBforCtoDat28Iknow“timeisknowledge”,butIneverseemtohaveenoughof.SoIamworkinghardtosavethem.A.bothB.eitherC.neitherD.none29.Marysaidthatoncehimyouwouldlikehimandmakefriendswithhim.A.meetB.tomeetC.meetingD.met30.Howlongdoyouthinkitwillbetheput

26、erpanyputsforwardanewproduct?A.beforeB.sinceC.untilD.that31ThebigfireinShanghai,believedtoduetotheburningofconstructionmaterials,caused58deathsanddestroyedallthebelongingsofthepeoplethere.AhaveoccurredBoccurChavebeenoccurringDbeoccurring32.Onthesurfaceofthewater,whichspoiledthebeautifulsceneryofthep

27、ark.A.somedeadleavesdidfloatB.didfloatsomedeadleavesC.floatedsomedeadleavesD.didsomedeadleavesfloat33ThewindisalwaysblowinghereHowIwishittodayAwon'tblowBdidn'tblowCdoesn'tblowDisn'tblowing34Willpowerisakindofquality,isittakestodoanythingwell.Awhat;whichBwhat;whatCwhich;whichDwhich;wh

28、at35AscientificreporthasfoundthatsnowandiceonAfrica'shighestmountainKilimanjarorapidlyandcouldvanishwithin20years.A.hasbeenmeltedB.willmeltC.ismeltingD.wasbeingmelted第二节:完型填空：（共20小题，每小题1.5分，满分30分）阅读下面短文，从每题所给的四个选项中，选出最佳选项，并在答题卡上将该项涂黑。Whenaratherdirty,poorlydressedpersonkneelsatyourfeetandputsout

29、hishandstobeg_36afewcoins,doyouhurryon,no_t_37_whattodo,ordoyoufeelsadandhurriedly_38_somemoney?Whatshouldourattitude_39_beggarsbe?TherecanbenoquestionthattheworldisfullofterriblysadstoriesIt_40_beterribletohavenoideawhereournextmealisgoingtoefromItseems_41_nottogivesomemoneytobeggars_42,mostofthewo

30、rld'sgreatreligionsorderustobeopen-heartedand_43_whatwehavewiththoselessluckythanourselvesButhastheworldchanged?Maybewhatwasmorallyrightintheolddays,_44_oneknewexactlywhointhevillagehadsufferedmisfortuneandneededhelp,isnolongerthebestideaQuiteafewpeoplewillnotgivetobeggarsLetuslookattheir_45_Fir

31、st,somebelievethatmanycitybeggarsdressup_46_tolookpitiableandactuallymakeagood_47_frombeggingGivingtobeggarsonlyencouragesthissortofevil（恶行）._48,thereistheworrythatthemoneyyougivewillbespentonbeer,wineordrugsThirdly,thereistheopinion_49thereisnorealexcuseforbeggingOnemightbepoor,butthatisnoreasonfor

32、losingone'ssenseof_50_andself-dependenceRelatedtothisistheopinionthattheproblemshouldbehandledbythegovernment_51ordinarypeopleSomepeoplethinkbeggarsshouldgotothelocalgovernmentdepartmentand_52helpItishardtoetoanyfinalconclusion:therearevarious_53_andwemust_54_themdifferentlyAfewcoinscansavealife

33、insomesituations,andevenifthemoneyiswasted,thatdoesnottakeawaythemoralgoodnessofthe_5536AtoBwithCatDfor37AknowingBexpectingCdemandingDsettling38AputawayBhandoverCtakeinDgetout39AatBinCoverDtowards40AmustBcanCneedDmight41Awarm-heartedBgenerousCcruelDconsiderate42AStrangelyBHonestlyCCertainlyDSurprisi

34、ngly43AgiveBdonateC.shareDcontribute44AwhyBwhenCwhatDhow45AargumentsBquarrelsCsayingsDtalks46AonshowBonpurposeCforfunDbyaccident47AmoneyBfortClivingDdecision48ASecondlyBSurelyCPossiblyDThen49AwhatBwhetherCthatDwhich50AgoodnessBprideCsecurityDresponsibility51AratherthanBorratherCotherthanDbutalso52Ap

35、roduceBreceiveCearnDoffer53AcasesBeventsCconditionsDstates54AgowithBmunicatewithCdealwithDmeetwith55AgiverBreceiverCvillagerDgovernment第三部分：阅读理解（共两节，40分）第一节（共15小题；每小题2分，共30分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项TheotherdayIheardafewlocalmusicianstalking:“Ihatealltheterriblepianosinthistown.Ihat

36、ethatrubbishtheyplayontheradio.Theycan'tevenunderstandabitofmusic.”“I'mneverplayinginthatclubagain.Toomanydrunksandnobodylistenstous.”But,oneyoungermusiciansaid,“Thereareafewclubsthatbookmybandafewnightsamonth,andI'mtryingtofindotherplacestoplay.I'malsolookingtobookafewsummerfestival

37、sthisyear.”I'veheardthatyouaretheaverageofthefivepeoplewhomyouspendthemosttimewith,ortoputitanotherway,youarewhoyourfriendsare.Attitudesareimportant.Whetherthey'repositiveornegative,they'rerubbingoffonyou.Ifyou'rearoundpeoplewhoplainaboutlackofworkandaboutothermusicians,orblame（责怪）ot

38、hers,andyouplaytheroleofvictim（受害者）,chancesareyouwillstarttoaswell.Soit'stimetotakealookatthepeopleyoucall“friends”.Thisisaneasyexercise:Makealistofthepeoplewhoyouhangoutwith,andsimplystopspendingtimewiththenegativepeopleonyourlist.Setanewstandard标（准）foryourselfanddon'tbeefriendswithpeoplewh

39、ofallbelowthatstandard.Keepsuccessfulpeoplearoundyouandyourownchancesforsuccesswillbemuchbetter.Askthemhowtheydoit.Askiftheywillhelpyougettheworkyou'relookingfor,ormaybegiveyousomeadvicetohelpyouonyourcareerpath.56Whichofthefollowingwouldbethebesttitleforthispassage?A. Afriendinneedisafriendinde

40、edB. HowtomakefriendshiplastforeverC. YouarewhoyourfriendsareD. Friendsarethemostimportantinone'ssuccess57Theunderlinedsentence“they'rerubbingoffonyou”inParagraph6meansA. they'llpushyouaheadB.they'llinfluenceyouC.they'llcoveryourshortingsD.they'llhelpyouachieveyourgoal58Themu

41、sicians'wordsatthebeginningarewrittenmainlytoshow.A.themusicians'livingconditionsarequitepoorB. peoplehavepoortasteinmusicC. peoplehavedifferentattitudestowardsthesamethingD. youngpeoplehavegreaterchancesofsucceeding59BytakingtheexercisementionedinParagraph7,youcan.A.improvealotinmakingmoref

42、riendsB. etotherightwayofmakingfriendsC. developabetterrelationshipwithyourfriendsD. arrangethetimewithyourfriendsproperlyBThepracticeofstudentsendlesslycopyinglettersandsentencesfromablackboardisathingofthepast.Withtheingofnewtechnologieslikeputersandsmartphone,writingbyhandhasbeesomethingofnostalg

43、ic（怀旧的）skill.However,whiletoday'seducatorsareusingmoreandmoretechnologyintheirteaching,manybelievebasichandwritingskillsarestillnecessaryforstudentstobesuccessful-bothinschoolandinlife.VirginiaBerninger,professorofeducationalpsychologyattheUniversityofWashington,saysit'simportanttocontinuete

44、achinghandwritingandhelpchildrenacquiretheskillofwritingbyhand.Berningerandhercolleaguesconductedastudythatlookedattheabilityofstudentstopletevariouswritingtasks-bothonaputerandbyhand.Thestudy,publishedinxx,foundthatwhenwritingwithapenandpaper,participantswrotelongeressaysandmorepletesentencesandhad

45、afasterwordproductionrate.Inamorerecentstudy,Berningerlookedatwhatrolespellingplaysinastudent'swritingskillsandfoundthathowwellchildrenspellistiedtoknowwelltheycanwrite.“Spellingmakessomeofthethinkingpartsofthebrainactivewhichhelpsusaccessourvocabulary,wordmeaningandconcepts.Itisallowingourwritt

46、enlanguagetoconnectwithideas.”Berningersaid.Spellinghelpsstudentstranslateideasintowordsintheirmindfirstandthentotranscribe（转换）“thosewordsinthemindwrittensymbolsonpaperorkeyboardandscreen,”thestudysaid.Seeingthewordsinthe“mind'seye”helpschildrennotonlytoturntheirideasintowords,saysBerninger,buta

47、lsotospot发现）spellingmistakeswhentheywritethewordsdownandtocorrectthenovertime.“Inourputerage,somepeoplebelievethatwedon'thavetoteachspellingbecausewehavespellchecks,”shesaid.“Butuntilachildhasafunctionalspellingabilityofaboutafifthgradelevel,theywon'thavetheknowlegdetochoosethecorrectspellin

48、gamongtheoptionsgivenbytheputer.”60. Whatmakeswritingbyhandathingofthepast?A. Theabsenceofblackboardinclassroom.B. Theuseofnewtechnologiesinteaching.C. Thelackofpracticeinhandwriting.D. Thepopularuseofsmartphones.61. Berninger'sstudypublishedinxx.A. focusedonthedifferencebetweenwritingbyhandando

49、naputer.B. indicatedthatstudentsprefertowritewithapenandpaper.C. foundthatgoodessaysaremadeupoflongsentences.D. discussedtheimportanceofwritingspeed.62. Whichofthefollowingbestshowstheroleofspelling?A. Spellingimprovesone'smemoryofwords.B. Spellingabilityiscloselyrelatedtowritingability.C. Spell

50、ingbenefitsthetranslationfromwordsintoideas.D. Spellingslowsdownfindingexactwordstoexpressideas.63. Whatconclusioncouldbedrawnfromthepassage?A. puterscanhelppeoplewiththeirchoiceofwords.B. Spellcheckscantaketheplaceofspellingteaching.C. Handwritingstillhasaplaceintoday'sclassrooms.D. Functionals

51、pellingabilitydevelopsfastinthefifthgrade.CVolunteeringabroadisagreatwaytohelpothers,improveyourskillsandbeeamoreconfident,independentperson.Ifyouareinterestedinvolunteeringabroad,herearesomeplacestogo.AustraliaIfyouseekalifeonthebeach,inagreatclimatewithfriendlypeople,Australiamightbeyourbestbet.Wi

52、ththousandsofvolunteersalreadysigninguptoleaveforAustraliaduringtheholidays,itwillbeaverypopularoption.BrazilThisvastcountryhassomegreatopportunitiesonofferandisespeciallypopularthisyear.AlotofvolunteerworkisavailableinBrazilcentersonconservationandecologicalprojects.Withtheworld'slargestrainfor

53、estinBrazil,ofwhichhugepartisindanger,therearelotsofdifferentjobsyoucando.KenyaKenyaisthedestinationforthoseseekinganAfricanexperience.GenerallyvolunteersinKenyaworkinorphanages（孤儿院）orwithlocalchildrenlivinginslums（贫民窟）.ThereisagreatdemandforvolunteersinAfricabecausemanypeopleliveinpoverty,soifyoutr

54、ulyfeellikemakingadifferencetoamunity,Kenyashouldbeatthetopofyourlist.CostaRicaGoldensandybeaches,clearcoastlinesandbeautifulcitiesarewhatCostaRicaisallabout.Becauseofitssmallsize,youcanseealotofthecountryinjustashorttime.Youcanreallymakethemostofyourtimeasavolunteer.Alotofworkisneededwithwildlifean

55、decologicalwork,soifyouwanttolookafterturtlesonthebeach,CostaRicacouldbejusttheplaceforyou64. Ifyouareinterestedinprotectingtheenvironment,youwillprobablygotoA.AustraliaB.KenyaC.BrazilD.CostaRica65.1tcanbeinferredfromthepassagethatvolunteersinKenyamainlyworkwithA.animalsB.plantsC.theelderlyD.children66. IfyouchoosetogotoCostaRica,youaresupposedto.A.workwithanimalsonthebeachB.surfwithchildreninthewaterC.takecareoftreesintheforestsD.lookafterchildrenwhohavelosttheirparentsDNOTallmemoriesaresweet.Somepeoplespendalltheirlivestryingtoforgetbadexperiences.Vi