Mostpeopleknowthisjoke.Butrecentlysomepeoplehavebeenmuchmoreworriedabouthowthegrizzlybear(灰熊)andmountainlioncancrosstheroad.

　“MillionsofanimalsdieeachyearonU.S.roads”theFederalHighwayAdministrationreports.Infactonlyabout80ocelotsanendangeredwildcatexistintheU.S.today.Themainreason?Roadkill.

　“Ecopassages(生态通道)”mayhelpanimalscrosstheroadwithoutbeinghitbycars.Theyarepathsbothoverandunderroads.“Theseecopassagescanbeextremelyusefulsothatwildlifecanavoidroadaccidents”saidJodiHiltyoftheWildlifeProtectionSociety.

　Butdoanimalsactuallyusetheecopassages?Theanswerisyes.PaulBeierofNorthernArizonaUniversityfoundfootmarksleftbymountainlionsonanecopassagethatwentunderahighway.Thisshowedthatthelionsusedthepassage.

Buildersofecopassagestrytomakethemlooklikeanaturalpartofanareabyplantingtreesonandaroundthem.Animalsseemtobecatchingon.Animalsasdifferentassalamanders(火蜥蜴)andgrizzlybearsareusingthebridgesandunderpasses.

　Thenexttimeyouvisitaparkordrivethroughanareawithalotofwildlifelookaround.Youmightseeananimaloverpass!

1.Thewriterusestheexampleof“ocelots”toshowthat_______.

A.wildanimalshavebecomemoredangerous

B.thedrivingconditionshaveimprovedgreatly

C.themeasureforprotectingwildlifefailstowork

D.anincreasingnumberofanimalsarekilledinroadaccidents

2.Fromthenewsstoryweknowanecopassageis________.

A.anundergroundpathforcars　B.afencebuiltforthesafetyofthearea

C.abridgeforanimalstogetoverariverD.apathforanimalstocrosstheroad

3.Whenthewritersaysthatanimalsseem“tobecatchingon”hemeans________.

A.animalsbegintorealizethedangersontheroad

B.animalsbegintolearntouseecopassages

C.animalsarecrossingtheroadingroups

D.animalsareincreasinginnumber

4.Thewriterasksvisito