高三任务型阅读专练（二）.doc

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1、任务型阅读专练(二)AnEventofImaginationTheyearis2094.IthasbeenannouncedthatacometisheadingtowardstheEarth.Mostofitwillmissourplanet,buttwopieceswillprobablyhitthesouthernhalfoftheEarth.On17July,apiecefourkilometerswideenterstheEarth'satmospherewithamassiveexplosion.Abouthalfofthepieceisdestroyed,buttherem

2、ainingparthitstheSouthAtlanticat200timesthespeedofsound.Theseaboilsandahugeholeismadeintheseabed.Hugewavesarecreatedandspreadoutwardsfromthehole.Thewallofwater,akilometerhigh,rushestowardssouthernAfricaat800kilometersanhour.CitiesontheAfricancoastaretotallydestroyedandmillionsofpeoplearedrowned.B

3、eforethewavesreachSouthAmerica,thesecondpieceofthecometlandsinArgentina.EarthquakesandvolcanoesaresetoffintheAndesMountains.TheshockwavesmovenorthintoCaliforniaandallaroundthePacificOcean.ThecitiesofLosAngeles,SanFranciscoandTokyoarecompletelydestroyedbyearthquakes.Millionsofpeopleinthesouthernha

4、lfoftheeartharealreadydead,butthenorthwon'tescapeforlong.Becauseoftheexplosions,thesunishiddenbycloudsofdust,andtemperaturearoundtheworldfallstoalmostzero.Cropsareruined.Thesunwon'tbeseenagainformanyyears.Warsbreakoutascountriesfightforfood.Ayearlater,nomorethan10millionremainalive.Coulditreallyh

5、appen?Infact,ithasalreadyhappenedmorethanonceinthehistoryoftheEarth.Thedinosaurs(恐龙)wereontheEarthforover160millionyears.Then65millionyearsagotheysuddenlydisappeared.ManyscientistsbelievethattheEarthwashitbyapieceofobjectinspace.Thedinosaurscouldn'tlivethroughthecoldclimatethatfollowedandtheydied

6、out.Willwemeetthesameend?ReasonsResultsOnepiecehitstheSouthAtlanticat200times7172thespeedofsound.Theseaboilsandahugeholeismadeintheseabed.Atsunami(海啸)hitssouthernAfrica,73citiesontheAfricancoast,and74millionsofpeople.A7576happenswhenthefour-kilometer-widepieceofcometenterstheEarth's77.Thesunishid

7、denbycloudsofdustandthetemperaturefallstoalmostzero,78crops.Warsbreakoutforfoodandonly10millionpeopleremain.Thehumanbeingsare79thedangerof80out.5任务型阅读专练(二)Sincethebeginningofhumanevolution,menhavemigrated（迁移）acrosscont