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Unit5Usinglanguage一、单词拼写1.A(特征)ofthisanimalisitsabilitytoliveforalongtimewithoutwater.
2.Thenumberoftreeslargerthantwofeetacrosshas(减少)by50percentonmorethan46,000squaremilesofCaliforniaforests,thenewstudyfinds.
3.Shesaystheintroductionoftheplantsandanimalsnot(源于)toHawaiiisthemainreasonfortheextinction.
4.IntheXiaDynasty,Chinahadgraduallyenteredtheslavesocietyfromthepsociety.
5.Youshouldnotbothersforwhatisyourownfault.
二、用方框内短语的适当形式填空carryout;bycontrast;inparticular;serveas;fightoff;intheend1.Sincethebeginningofthe19thcentury,Americahashadtroublewithenvironmentalproblems,airpollution.
2.Agooddietandfitbodywillhelpyoutoillnessanddisease—andtorecovermorequicklyifyoudobecomesick.
3.Chinahasachievedremarkableresultsinfightingthenewpandemic.,somecountrieshavedoneapoorjob.
4.Shedidn'tthinkthathewaswellenoughtosuchadifficulttask.
5.HisresearchcanvaluablereferencefortheUNtocontrolthespreadofEBOLA,adeadlyvirus.
6.,theattemptfailed,butthereverberationsstillcanbefelttoday.
三、阅读理解Whenaleafyplantisunderattack,itdoesn'tsitquietly.Backin1983,twoscientists,JackSchultzandIanBaldwin,reportedthatyoungmapletreesgettingbittenbyinsectssendoutaparticularsmellthatneighbouringplantscanget.Thesechemicalscomefromtheinjuredpartsoftheplantandseemtobeanalarm.Whattheplantspumpthroughtheairisamixtureofchemicalsknownasvolatileorganiccompounds,VOCsforshort.ScientistshavefoundthatallkindsofplantsgiveoutVOCswhenbeingattacked.It'saplant'swayofcryingout.Butisanyonelistening?Apparently.Becausewecanwatchtheneighboursreact.Someplantspumpoutsmellychemicalstokeepinsectsaway.Butothersdodoubleduty.Theypumpoutperfumesdesignedtoattractdifferentinsectswhoarenaturalenemiestotheattackers.Oncetheyarrive,the_tables_are_turned.Theattackerwhowaslunchingnowbecomeslunch.Instudyafterstudy,itappearsthatthesechemicalconversationshelptheneighbours.Thedamageisusuallymoreseriousonthefirstplant,buttheneighbours,relativelyspeaking,staysaferbecausetheyheardthealarmandknewwhattodo.Doesthismeanthatplantstalktoeachother?Scientistsdon'tknow.Maybethefirstplantjustmadeacryofpainorwassendingamessagetoitsownbranches,andso,ineffect,wastalkingtoitself.Perhapstheneighboursjusthappenedto“overhear”thecry.Soinformationwasexchanged,butitwasn'tatrue,intentionalbackandforth.CharlesDarwin,over150yearsago,imaginedaworldfarbusier,noisierandmoreintimate(亲密的)thantheworldwecanseeandhear.Oursensesareweak.There'sawholelotgoingon.1.Whatdoesaplantdowhenitisunderattack?A.Itmakesnoises.B.Itgetshelpfromotherplants.C.Itstandsquietly.D.Itsendsoutcertainchemicals.2.Whatdoestheauthormeanby“thetablesareturned”inParagraph3?A.Theattackersgetattacked.B.Theinsectsgatherunderthetable.C.Theplantsgetreadytofightback.D.Theperfumesattractnaturalenemies.3.Scientistsfindfromtheirstudiesthatplantscan________.A.predictnaturaldisastersB.protectthemselvesagainstinsectsC.talktooneanotherintentionallyD.helptheirneighbourswhennecessary4.Whatcanweinferfromthelastparagraph?A.Theworldischangingfasterthanever.B.Peoplehavestrongersensesthanbefore.C.Theworldismorecomplexthanitseems.D.PeopleinDarwin'stimeweremoreimaginative.四、语法填空Somepopularplacestovisitarebuiltbypeople.Otherfamousplacesarethe__1__(create)ofnature.InthenortheastoftheUS,therewasafamousrockonahighmountain__2__lookedjustlikeanoldman.__3__(locate)inthetownofFranconia,NewHampshire,hehadthickhair,abignoseandabeard.PeoplecalledhimTheOldManoftheMountain__4__everyyearmorethanamillionpeoplecametovisithim.TheOldManoftheMountain,alsoknown__5__theGreatStoneFace,measured40__6__(foot)tall.Scientiststhinkthatthestonefacehadbeenthereforabout17,000years.InMay2003,therewereveryhighwindsandthetemperaturewasverycoldnearTheOldManoftheMountain.Theskywasso__7__(cloud)thatpeoplecouldn'tseethestonefaceformanydays.Assoonasthestormwasover,peoplelookedforTheOldManbuttheycouldn'tseehim.Theydiscoveredthathe__8__(fall)apart.Anumberofscientistsclimbedup,__9__(hope)torepairthestoneface.Theyweredisappointedat__10__theysaw—thedamagefromtheweatherwasjusttoobad.
一、单词拼写1.characteristic2.declined3.native4.primitive5.blame二、用方框内短语的适当形式填空1.inparticular2.fightoff3.Bycontrast4.carryout5.serveas6.Intheend三、阅读理解1.D细节理解题。根据第一段中的reportedthatyoungmapletreesgettingbittenbyinsectssendoutaparticularsmellthatneighbouringplantscanget.Thesechemicalscomefromtheinjuredpartsoftheplantandseemtobeanalarm.可知,植物受到伤害时会散发出一种特殊的气味,而这种特殊的气味就是某些化学物质。2.A句意理解题。根据第三段中的Theypumpoutperfumesdesignedtoattractdifferentinsectswhoarenaturalenemiestotheattackers.以及画线部分后的Theattackerwhowaslunchingnowbecomeslunch.可知,画线部分的意思是:袭击者受到了它的天敌的袭击。3.B推理判断题。根据第三段中的Someplantspumpoutsmellychemicalstokeepinsectsaway.和Theypumpoutperfumesdesignedtoattractdifferentinsectswho
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