Manisalandanimal,butheisalsocloselytiedtothesea.Throughouthistorytheseahasservedtheneedsofman.Theseahasprovidedmanwithfoodandaconvenientwaytotraveltomanypartsoftheworld.Today,nearlytwo—thirdsoftheworld’spopulationlivewithin80kilometersoftheseacoast.

Inthemoderntechnologicalworld,theseaoffersmanyresourcestohelpmankindsurvive.Resourcesonlandarebeginningtobeusedup.Thesea,however,stillcanbehopedtosupplymanyofman’sneeds.

Thelistofrichesoftheseayettobedevelopedbyman’stechnologyisimmense.Oilandgasexplorationshavebeencarriedoutfornearly30years.Valuableamountsofmineralsexistontheoceanfloorreadytobemined.

Fishfarmingpromisestobeagoodwaytoproducelargequantitiesoffood.Thecultureoffishandshellfish(贝类动物)isanancientskillpractisedinthepastmainlybyOrientalpeople.

Besidesoilandgas,theseamayoffernewsourcesofenergy.Expertsbelievethatthewarmtemperatureoftheoceancanbeusedinawaysimilartothesteaminasteamship.Oceancurrentsandwavesofferpossibleuseasasourceofenergy.

Technologyisenablingmantoexploreevermoredeeplyunderthesea.Thedevelopmentofstrong,newmaterialshasmadethispossible.

Thetechnologytoharvesttheseacontinuestoimprove.Expertsbelievethatbytheyear2020theproblemsthatpreventusfromexploitingfullythefood,minerals,andenergysourcesoftheseawillbelargelysolved.

1.Themajorthingsthattheseaoffersmanare______.

A.fishandoil B.mineralsandoil

C.warmtemperatureandoceancurrents D.thefood,energysources,andminerals

2.Theseaservestheneedsofmanbecause______.

A.inprovidesmanwithfood B.itoffersoiltoman

C.itsuppliesmanwithminerals D.alloftheabove

3.Wecanconcludefromthispassagethat______.

A.thesearesourceshavelar