Theearthisabout4600millionyearsold.Modernmanhaslivedontheearthforonly35000yearsbutduringthattimewehavechangedourplanetinmanyways.Manyofthethingsthatwehavedonearegoodbutmorearenotgoodfortheearth.
Waterpollution
Alotofpeoplebirdsandfishdieeachdaybecauseofwaterpollution.Factorieshavepollutedthelandandthewater.Asaresultmanyriversandlakesarenowdead.
Airpollution
Inbigcitiesfactoriesaswellascarstrucksandbusesarethemaincauseofairpollution.Manypeopleincitiesnowhaveserioushealthproblems.ForexampleMexicocityusedtobeabeautifulsunnycapitalbuttodayitisalwayscoveredbythickbrownclouds.
Soilpollution
Inordertohaveagoodharvestmostofthefarmersusechemicalstoomuchintheirfields.That’sbadforthesoil.Butthiskindofpollutionisdifficulttostop.
Hopeforthefuture
Theseproblemsareveryseriousforourfuturesoallofusshoulddosomethingtoimproveourenvironment.Ifwecanstoppollutionourplanetwillbecomemoreandmorebeautifulandourhealthwillbebetter.Let’sbegreenerpeople!
根据短文内容,选择正确答案。
1._____havemadetheearthchangealot.
A.HumanbeingsB.Animals
C.PlantsD.Peopleinotherplanets
2.Thereare_____kindsofpollutioninthispassage.
A.twoB.threeC.fourD.five
3.WhichsentenceisNOTtrueaccordingtothepassage?
A.Mostofthingsthatwehavedonearegoodforourplanet.
B.Wemuststopthefactoriesfrompouringwastewaterintotheriversandlakes.
C.Becauseofwaterpollutionmanyriversandlakesarenowdead.
D.Waterpollutionisveryseriousnowadays.
4.WhichsentenceisTRUE?
A.ThoughMexicocityisalwayscoveredbythickbrowncloudsit’sstillabeautifulsunnycapital.
B.Airpollutioncanmakepeoplesick.
C.Nowfewerfarmersusechemicalsinthefields.
D.Factoriescarstrucksandbusesarethemaincauseofsoilpollution.