Unit 5 Using language 提升练习-2022-2023学年高中英语外研版2019选择性必修第二册

Unit5SectionBUsinglanguage一、翻译句子翻译下列句子,体会it的用法。1.今天是个好日子。2.妈妈给了我一件礼物,但是我把它弄丢了。3.他觉得学好英语很有用。4.大象的腿跟树干一样圆而高,这点显而易见。5.你该睡觉了。6.这是我第一次去北京。7.孩子们被要求在晚上十点前上床睡觉。8.我是在昨天晚上见到Mike的。二、阅读理解Guamisabeautiful,smallislandinthePacificOcean.You'llfindhappysongbirds,clearbluewater,andleafyforestthere.Butthesmallislandhasabigproblem：snakes.Thereareabout2millionbrowntreesnakeslivinginGuam.Thesnakeslikelyarrivedinthe1940s.Theyprobablyslipped(滑行)unseenontoshipsandplanesheadingtoGuam.Oncethere,thesnakeslaideggs.Snakefamiliesgrew.ThesnakeshavenonaturalenemiestoeatthemonGuam.Soon,theislandwascoveredwiththesesnakes.Thebrowntreesnakehashadadevastatingeffect.Thesnakeseatbirds.Thereusedtobe12kindsofbirdsontheisland.Butthesesnakeshavekilledoffninekindsofthebirds.Thesnakescangrowtobe10feetlong.Theyoftenbitehumans.Theyclimbontopowerlinesandmaketheelectricitygoout.Thiscausesmillionsofdollarsindamage.Scientistshavetriedmanydifferentwaystocontrolthenumberofsnakes.Theyhaveusedsnaketrapsandsnake­sniffingdogs.Nothingseemedtowork.Nothing,thatis,untiltheyfoundasurprisingsecretweapon：killermice.Scientistsfoundoutthatthereisoneeasywaytokillbrowntreesnakes.TheycouldgivethemamedicinecalledTylenol.PeopletakeTylenolforheadachesandotherpains.EvenalittlebitofTylenolcankillabrowntreesnake.ButhowwouldscientistsgetthetreesnakestoeatTylenol?Theycameupwithaplan.First,theexpertsputthemedicineintodeadmice.Thentheyattachedeachmousetoaminipaperparachute(降落伞)．PlanesdroppedthemiceoverGuam.Theparachutesgotcaughtinthetrees.Themicebecamedinnerforthesnakesthatlivethere.Hasitworked?Sofar,researchshowsthattherearefewersnakesbecauseofthemice.Theworryisthatitmaybetoolatetoclearthesnakes,butMrVicefromGuam'sDepartmentofAgriculturesaysthisshouldnotstoptheislandersfromtrying.“Ourlong­termgoalistokillthesnakeoffcompletely，”hesays.1．Whatcanwelearnaboutthebrowntreesnakes?A．TheywereshippedtoGuamonpurpose.B．TheywerenotnativetoGuam.C．Theywereatriskinthe1940s.D．Theygrewveryslowly.2．Whatdoestheunderlinedword“devastating”inParagraph3mean?A．Magical. B．Interesting.C．Short­term. D．Damaging.3．Whatwasamoreworkablewaytokillthebrowntreesnakes?A．Usingsnaketraps.B．PuttingTylenolinthetrees.C．Bringingintheirenemies.D．LettingthemeatTylenolcarriedbymice.4．WhatdoesMrVicethinkofsolvingthissnakeproblem?A．Heisproudofit.B．Heishopefulofit.C．Heisdoubtfulaboutit.D．Heisunconcernedaboutit.三、阅读七选五Whileplentyofbirds—suchasswallows,hawksandhummingbirds—migrate(迁徙)duringtheday,themajorityoflandbirdstravelatnight.Migrationatnighthasatleastthreeadvantages.1Secondly,theairintheatmosphereisusuallymorestablethanduringtheday.Lastlytheairiscooleratnight.Amigratingbirdproducesahugeamountofheatthatneedstobereleased.Mostoftheheatislostfromtheunfeatheredlegs.2

Night-timemigratorsincludesparrows,warblers,flycatchers,thrushes,oriolesandcuckoos.Mostofthemdon’tliveinvastopenplaces.3Theyaren’tthebestfliers,sotheyneedthethickcoveragetoavoidenemies.

Butflyingatnightisbecomingmoredangerousthanitusedtobe.4Awell-lithigh-risecankillhundredsofmigratingbirdsinasinglenight,anissuethathasstartedtoattractmorepublicconcern.IncitieslikeNewYork,ChicagoandHouston,someskyscrapersandotherlandmarksnowhave“lightsout”programsduringkeybirdmigrationtimesinthefallandspring.

5Aproteincalledcryptochrome,whichissensitivetobluelightisthoughttobethekeytomakingthishappen.Cryptochromesfrommigratorybirdshaveevolvedtorequirelesslightandtoallowtheirrecognitionofbluelighttosenseandrespondtomagneticfields(磁场).

A.Instead,theyliveinthewoodsandothershelteredhabitats.B.Birdsneedtheheattokeepwarmandmaintainagoodstate.C.Birdsdonothavetoworryaboutattacksfromdangerousbirds.D.Onlywhenthereisenoughlightcantheygetsignalstomigrate.E.MigratingbirdsuseEarth’smagneticfieldstohelpthemnavigate.F.Lightsonbuildingsandtowersconfusebirds,causingthemtocrash.G.Thecoldertheairtemperatureis,themorequicklythatheatcanbereleased.

一、翻译句子1.Itisanicedaytoday.2.Mymothergavemeagift,butIlostit.3.HefeltitusefullearningEnglishwell.4.Itisveryclearthattheelephant’slegisroundandtalllikeatreetrunk.5.It’stime(that)youwent/shouldgotobed.6.ThisisthefirsttimethatIhavebeentoBeijing.7.Itisrequestedthatchildrenshouldgotobedbefore10pm8.ItwaslastnightthatImetMike.二、阅读理解1.B推理判断题。根据第二段前两句可知，蛇可能是在20世纪40年代出现的。它们可能趁人不注意溜上了前往Guam岛的船只和飞机。由此推断出，棕树蛇不是Guam岛的本地物种。2.D词义猜测题。根据后文可知，棕树蛇吃鸟，岛上曾经有12种鸟类，但是这些蛇已经杀死了九种鸟类。蛇可以长到10英尺长，它们经常咬人。它们爬上电线，让电力供应中断，这造成了数百万美元的损失。以上说明了这种蛇的危害性很大。由此可以推断出画线词devastating意思是“有破坏性的”。故选D项。3.D细节理解题。根据第四至六段内容可知，杀死棕树蛇的一个有效方法是让它们吃携带Tylenol的老鼠。4.B推理判断题。根据最后一段中Guam岛农业部的Vice先生说：“这不应该阻止岛民的尝试。我们的长期目标是彻底消灭蛇。”可推断出，Vice先生对解决蛇的问题满怀希望。三、阅读七选五1.C根据上文“Migrationatnighthasatleastthreeadvantages.”可知,夜间迁徙至少有三个好处。再根据下文两句的“Secondly”和“Lastly”可知,本句是有关夜间迁徙的第一个好处。根据第三段最后一句“Theyaren’tthebestf