Fishfarmingpromisestobeagoodwaytoproducelargequantitiesoffood.Thecultureoffishandshellfish(贝类动物)isanancientskillpractisedinthepastmainlybyOrientalpeople.
Besidesoilandgas,theseamayoffernewsourcesofenergy.Expertsbelievethatthewarmtemperatureoftheoceancanbeusedinawaysimilartothesteaminasteamship.Oceancurrents(水流)andwavesofferpossibleuseasasourceofenergy.
Technologyisenablingmantoexplore(勘探)evermoredeeplyunderthesea.Thedevelopmentofstrong,newmaterialshasmadethispossible.
Thetechnologytoharvesttheseacontinuestoimprove.Expertsbelievethatbytheyear2000theproblemsthatpreventusfromexploitingfullythefood,minerals,andenergysourcesoftheseawillbelargelysolved.
1.WhatisthebeattitleforthepassageA.NeedsofMan.B.SeaHarvestandFoodC.SeaandSourcesofEnergyD.SeaExploringTechnology.
3.Whydoestheauthormentionasteamshipinparagraph5A.Toillustratethatmancanmakeuseofsourcesofenergyfromthesea.B.Toshowthatasteamshipisbetterthanotherkindsofships.C.Toarguethatmanshouldusesteamships.D.Toindicatethatitiswarmerintheoceanthanonland.
4.Accordingtotheauthor,technologyisimportantbecause______.A.resourcesonlandarerunningshortintenyearsB.mancanuseittoexplorethedeeperseaC.itisalotoffundivingintotheseaD.ancientpeopleusedittoexplorethesea
5.Accordingtotheauthor,whenwilltheproblemstoexplorethedeepersealargelybesolved