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1、Theunderseaworldisverybeautiful.Nowmoreandmorepeoplewanttodiveinthewatertofindthesecretthere.Scubadivingisanewsporttoday.Itcantakeyouintoawonderfulunderseaworld.Youwillfindmanystrangeanimalsinthesea.Someareaslargeasaschoolbus.Manyseaanimalsgiveoutlightinthedarkandsomehaves
2、harpteeth.Duringtheday,thereisenoughlight.Here,underthesea,everythingisblueandgreen.Whenfishswimnearby,youcancatchthemwithyourhands.Whenyouhavebottlesofaironyourback,youcanstayindeepwaterforalongtime.However,youcan'tdivetoodeep.Andyoumustbeverycarefulwhenyoudiveindeepwater
3、.Thedeepseaisnotaneasyplacetolivein.It'scold,andit'sdark,too.Thedeeperitis,thelesssunlightthereis.Atabout3,000feet,thereisnolightatall.Itisverydarkinthesea.Manyfisheshavenoeyes.Somehavebigeyes.Afewhaveeyesononeside.Besides(除了)thecoldandthedarkness,deep-seaanimalsfaceathird
4、danger―otheranimals.Animalseat!Theymustfindfoodtoeat.Manyanimalseatplants.However,someanimalseatmeat.Thismeanstheseseaanimalshavetwobigjobs.Theyneedtofindanimalsasfood,andtheyhavetotrynottobecomeotheranimals'meal.46.Whydopeoplewanttodiveinthesea?Because______.A.theywanttoc
5、atchfishB.theywanttofindthesecretsoftheunderseaworldC.theseaisdeepD.thereareallkindsofplantsinthesea47.Inthedaytime,whenyoudiveinthesea,you______.A.canseeeverythinggreenandblueB.can'tbeindangerC.cancatchnothingD.can’tseeanythingclearly48.Howmanydangerswillanimalsmeetinthed
6、eepsea?A.One.B.Two.C.Three.D.Four.49.Whenyoudoscubadiving,youcan______.A.stayindeepwaterforalongtimeB.divevery,verydeepC.liveindeepwatereasilyD.divefreelywithoutanydangers50.WhichofthefollowingisWRONG?A.Oneanimalfindssomethingtoeat,anditmaybeeatenbyothers.B.Atthedepthof3,0
7、00feetunderthesea,manyanimalscanfindtheirwaybyhearingandfeeling.C.Thedeepertheseais,thedarkerandcolderitis.D.Atthedepthof3,000feetunderthesea,allanimalscanfindtheirwaybyseeing. 46~50BACAD （C） In1896,thefirstmodemOlympicGames
8、washeldinAthens,Greece.SincethenmanycountrieshavesuccessfullyheldtheOlympics,suchasEnglan
