Theflooroftheoceanhavemanyrichesthatcanbeusedbyman.Oilandchemicalsandmineralsalreadyaretakenfromthesea.Byusingnuclearenergy,oceanwatercanbeturnedintofreshwaterbytakingthesaltout.Inthenearfuture,itispossible

　　Theflooroftheoceanhavemanyrichesthatcanbeusedbyman.Oilandchemicalsandmineralsalreadyaretakenfromthesea.Byusingnuclearenergy,oceanwatercanbeturnedintofreshwaterbytakingthesaltout.Inthenearfuture,itispossibleforhumanbeingstoproducefoodfromfarmsunderthesea.Foodgrownintheseacouldhelptomeettheneedsofpopulationallovertheworldwhichisincreasingfast.Thousandsofpeoplegohungryeveryday.Abouttentofifteenpercentoftheworld’speopledonothaveenoughfood.Somescientistsbelievethatsomedaytheseawillbeusedtomakeelectricpower.Thiswouldhelptomeettheneedformorepowerfortheworld’sindustries.Thedecreasingsupplyofcoal,oilandgasshowsthattheneedtofindnewkindsofpowerisurgent.

　　36.Humanbeingshavealreadymadeuseof__________.

　　A)unclearenergyinthelabunderthesea

　　B)saltwaterresourcesasfreshwater

　　C)minerals,chemicalsandoiltakenfromthesea

　　D)farmsunderthesea

　　37.Wecanlearnfromthepassagethat_________.

　　A)therearenowmanyfarmsundertheseaproducingfood

　　B)morethanonetenthoftheworld’speoplearesufferingfromhunger

　　C)thesupplyofoil,gasandcoalareincreasingrapidlythroughouttheworld

　　D)itisunnecessaryformantomakefulluseoftherichesofthesea

　　38._____________canbeusedtoturnsaltwaterintofreshwater.

　　A)Nuclearpower

　　B)Electricpower

　　C)Newkindsofpower

　　D)Chemicalsandmineralstakenfromthesea

　　39.Itisurgenttofindnewkindsofpowerbecause__________.

　　A)theworld’spopulationisincreasingdaybyday

　　B)scientistsareworded(宣告)abouttheideaofmakingfulluseoftheseaintorealities

　　C)nuclearenergycannotmeettheneedformorepowerfortheworld’sindustries

　　D)thesupplyofcoal,oilandgasisdecreasingwhiletheneedfortheworld’sindustriesisincreasing

　　40.Thebesttitleofthepassageis___________.

　　A)ToFindNewKindsofPowerIsUrgent

　　B)TheIncreasingoftheWorldPopulation

　　C)RichesoftheSea

　　D)ManCanFarmundertheSeaintheFuture