高中英语Unit2TheenvironmentSectionⅠWelcometotheunitWord文件下载.docx
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高中英语Unit2TheenvironmentSectionⅠWelcometotheunitWord文件下载.docx
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A
Animalscanmovefromplacetoplace,butplantscannot.Whenananimalisunderattack,itcanrunawayorfightback.Plantscertainlycannotrunaway,andtheylackteethandclaws.Butplantscandefendthemselvesbyusingbothphysicalandchemicalmeans.
Someplantshavetheirownwaystokeepanimalsaway.Forexample,theleavesofthehollyplanthavesharpspines(刺)thatdiscouragegrasseatinganimals.Hollyleavesonlowerbrancheshavemorespinesthanleavesonupperbranches.Thisisbecausethelowerleavesareeasierformostanimalstoreach.
Someplants,suchastheoaktree,havethickandhardleavesthataredifficultforanimalstoeat.Somegrassmaycontainasandymaterial;
eatingsuchgrasswearsdowntheanimal’steeth.
Manyplantsalsohavechemicaldefenses.Someplantsproducechemicalsthattastebitterorcauseanunpleasantreaction.Someplantsmayfightagainstanattackbyincreasingtheproductionofthesechemicals.Whenacaterpillar(毛虫)bitesatobaccoleaf,theleafproducesachemicalmessenger.Thismessengersendstotherootstheinformationtoproducemorenicotine.Thehigherlevelsofnicotinediscouragethecaterpillar.
Manyplantsdependonbothphysicalandchemicaldefenses.AcertainplantinChina,forinstance,hasprickly(多刺的)leaves,andeachpricklecontainspoisonousvenom(毒液).Asingleexperiencewiththiskindofplantwillteachananimaltostayawayfromitinthefuture.
【解题导语】 本文主要介绍了植物的一些防御外敌侵犯的方法。
1.Thehollyplanthasmorespinesonthelowerleavesbecausemostanimals________.
A.arenottallenough
B.likethelowerleavesonly
C.arenotcleverenough
D.cangetthelowerleaveseasily
D 解析:
细节理解题。
文章第二段介绍,冬青植物底部的叶子刺更多是一种自我保护手段,因为底部的叶子容易被动物吃掉。
2.Todefendthemselves,oaktreesuse________.
A.chemicalmeansB.physicalmeans
C.bitterchemicalsD.sandymaterials
B 解析:
由文章第三段可知,橡树是采取“物理”手段保护自己。
3.Howdoestobaccoprotectitselfagainstanattackfromacaterpillar?
A.Itsleavesfightagainsttheattackbyphysicalmeans.
B.Itsrootssendamessengertodiscouragethecaterpillar.
C.Itsrootsincreasetheproductionofnicotinewhenitisattacked.
D.Itsleavesproducepoisonoussandtodrivethecaterpillaraway.
C 解析:
文章倒数第二段介绍,当“烟草”受到毛虫袭击的时候,它会传送信息到根部,增加“尼古丁”的含量。
4.Whatwouldbethebesttitleforthispassage?
A.PlantsandAnimals
B.HowPlantsDefendThemselves
C.AttacksandDefenses
D.HowAnimalsEatPlantLeaves
标题归纳题。
从文章介绍的“植物受到动物攻击时采取自我保护或防御手段”可得出答案。
B
Afewyearsago,Ireadaboutaneightyearoldgirlwhostudiedelephantpoaching(偷猎)inschoolandmadeaposterforherlocalgrocerystore.Thesloganread,“Savetheelephants.Don’tbuyIvorySoap,ortheywilldieout.”Whatthegirlhaddonetaughtmealesson.Sincethen,Ihavelookedateightyearoldsinadifferentway.Asanenvironmentaleducator,Iusedtoteacheightyearoldsabouttheharmofelephantpoaching,rainforestdestruction,andglobalwarming.Ihadadegreeinnaturalscience—butnotinchilddevelopment.WhatdidIthinkIwasaccomplishingbyputtingmyenvironmentalconcernsontheshouldersofkidswhostillbelieveinfairytales(童话故事)?
Kidsdevelopthefearofnaturewhentheirprimarycontactwiththenaturalworldishearingbadnewsabouttheenvironment.IfIwantedtoinspireconservationaction,Ineededtochangemyways,buthow?
IcameacrosssomeresearchbypsychologistLouiseChawla.Shewantedtoknowwhathadgoneoninthechildhoodsofadultswhoaregoodenvironmentalcitizens.Shefoundtwothingsmostcommon.Theyhadfreetimetoexploretheriversorwoodsdownthestreet,andtheyhadanadultintheirliveswhowasenthusiasticaboutthenaturalworld.Iunderstandnowthatwhatturnedmeintoagoodpersontodaywasachildhoodspentplayinginthefieldandhavingadadwhoknewthatfindingalobster(龙虾)underarockwasbetterthanfindingtreasure.
Sothat’swhatIwasdoingwhenIwaseightyearsold—lookingunderrocks,climbingtrees,andpickingwildflowers.Ididn’tknowathingabouttheCleanAirActthatwasbeingdebatedincongressatthattime.Ididn’thearalotofenvironmentalproblems.ButIbuiltarelationshipwithnatureandIgrewuptocare.NowItreatmyownkidslikethechildIwas.Mykidsturnoffthewaterwhentheybrushtheirteethandturnoffthelightswhentheyleavearoom.
【解题导语】 人类赖以生存的大自然正在被严重破坏,保护环境应该从孩子抓起,帮助孩子从小建立与自然的关系。
5.Whatcanbeinferredfromthefirsttwoparagraphs?
A.Theauthorfeltveryproudofherself.
B.Theauthortookactiontosavetheelephants.
C.Theauthorthoughtherteachingwasafailure.
D.Theauthordoubtedthenaturalscience.
推理判断题。
根据第一段中的WhatdidIthink...believeinfairytales(童话故事)?
以及第二段中的Ineededtochangemyways可知,作者认为自己的教育方法是不可取的。
6.Howdochildrenreactwhenlearningaboutenvironmentalproblems?
A.They
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