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1、中考沖刺四：閱讀理解技巧閱讀理解Anewstudyfindsthatplantscommunicatewithoneanothertowarnofdanger．Weoftenconsiderplantsasthefurnitureofthenaturalworld．Theydon’tmove；theydon’tmakesounds，theydon’tseemtoactonanything．Butasisoftenthecase，plantstalktoeachotherallthetime．Andthelanguagei
2、schemical.Overtheyears，scientistshavereportedthatdifferenttypesofplants，fromtreestotomatoes，giveoutchemicalsintotheairtohelpneighboringplants．Thesechemicalwarningscanspreadinformationaboutoneplant’sdiseaseorinfestation(蟲害)，sootherplantscanprotectthemselves．Buthow
3、plantsreceiveandactonmanyoftheinformationexactlyisstillmysterious.Inthisweek’sScienceMagazine，researchersinJapanofferedsomeexplanations．Theyhavefoundoutonechemicalmessageandtraceditallthewayfrombeginningtoend.Thescientistslookedattomatoplantsinfestedbyacommonpest
4、(害蟲)．Tostartout，theygrewplantsintwoseparateplasticspacesconnectedbyatube(管子)．Oneplantwasinfestedandplacedupwindandtheotherwasuninfestedandplaceddownwind．Thedownwindplantswerelaterexposed(暴露)tothepest．Theresultsshowedthatplantsnearsickneighborsbeforewereabletoprot
5、ectthemselvesbetteragainstthepest.Theyfoundonechemicalappearedmoreoftenintheexposedplants．ThechemicaliscalledHexVic．ThescientistsdiscoveredwhereHexViccomefrom，andputitoverhealthyplants．ThoseplantswerethenabletoproduceHexVic．Researchersmadesurethatuninfestedplants
6、couldfightoffbugsanddiseases．Howdotheyknowwhentoprotectthemselves?Theyarewarnedfirstbytheirfriendlyplantneighbors.Itisnotasimplestory，anditmaybehappeninginmoreplantspeciesthantomatoes．Itmayalsobehappeningwithmorechemicalsignalsthatarestillunknowntous．Inaword，wekn
7、owthatplantsnotonlycommunicate，butalsolookoutforoneanother.Theunderlined“traced”inthefourthparagraphprobablymeans_________here.42．A．reportedB．followedC．doubtedD．developed43．Forscientists，whicharetherightstepstowatchtomatoplantsinfestedbyapest?①Placetheinfestedpla
8、ntupwind.②Placetheuninfestedplantdownwind.③Exposethedownwindplantstothepest.④Growplantsintwoseparateplasticspacesconnectedbyatube.A．③①②④B．①④③②C．④①②③D．④②①③44．Yo
