【Weoftenhearpeoplesaythelionisthekingoftheforestsbecauseit’sstrongerandmoredangerousthantheotheranimals.Itcanrunfasterthanmostotheranimals.Thelionisthehighestanimalsinthelandfoodchain(食物链).Inthesea,thes】

　　Weoftenhearpeoplesaythelionisthekingof

　　theforestsbecauseit’sstrongerandmoredangerousthantheotheranimals.Itcanrunfasterthanmostotheranimals.Thelionisthehighestanimalsinthelandfoodchain(食物链).Inthesea,thesharkisatthetopofthefoodchain.Itcanswimfasterthanmostotherseaanimals.Itcanalsouseitsbigteethtocatchotherseaanimalsforfood.

　　Whatisatthetopoftheworld’sfoodchain?Humanbeingsare!Wearenotthebiggestorfastestintheworld,butwearethecleverest.Wecouldnotrunfasterthanmostanimals,sowemadecars,planesandnowwecanmovethefastes.Wecouldnotfightbetterthanalion,sowemadeguns(枪).

　　Itisimportantforpeopletokeepthebalanceofnature.Forexample,manyyearsagointhenorthofChina,peoplekilledalotofwildwolves.Thewildwolvesusuallyeatwildrabbits.Butafewyearslater,thenumberofwildrabbitswasbecomingbiggerandbiggerbecausethenumberofwildwolveswasgettingsmallerandsmaller.Thewildrabbitssharedthegrasswithsheepandcows.Muchofthegrasslandbecamedesert(沙漠).Rememberthatwearepartofthefoodchain,soweareindangertoo.Ifweprotectanimals,Weareprotectingourselves.

　　()1.Howmanykindsoffoodchiansdoesthewritertellusinthepassage?ATwoBThreeCFourDFive

　　()2.Humanbeingsareatthetopoftheworld’sfoodchainbecause______.AtheycanusegunsBtheyarethebiggest

　　CtheyarethecleverestDtheycandrivecars

　　()3.Whatdoestheunderlinedword“balance”meaninChinese?A平衡B能量C完整D形状

　　()4.Whichistheunderlinedword“balance”meaninChinese?

　　①Moreandmorewildrabbitsatemuchgrass

　　②ManyyearsagointhenorthofChina,peoplekilledalotofwildwolves③Muchofthegrasslandturnedintodesert

　　④Thenumberofwildwolveswasbecomingsmallerandsmaller.A②①④③B④③②①C①②④③D②④①③()5.Fromthepassage,thewritertellsus________.AtomakemorecarsBnottoeatanimals

　　CtoprotectanimalsDnottokeepthefoodchain