【SealevelriseGlobalwarmingmaymakethesealevelbecome(1)h________.SealevelriseGlobalwarmingmaymakethesealevelbecome(1)h________.Why?Well,warmerweathermakesglaciers(冰川)(2)m________.Aglacierisalargeblockoficethatmo】

　　SealevelriseGlobalwarmingmaymakethesealevelbecome(1)h________.

　　Sealevelrise

　　Globalwarmingmaymakethesealevelbecome(1)h________.Why?Well,warmerweathermakes

　　glaciers(冰川)(2)m________.Aglacierisalargeblockoficethatmovesvery,very(3)s________.Some

　　meltingglaciersaddmorewatertotheocean.Warmertemperaturesalsomakewaterexpand(膨胀).Whenwaterexpandsintheocean,ittakesupmorespaceandthelevelofthesea(4)r________.

　　Sealevelmayrisebetweenseveralinchesandasmuchas3feetduringthenextcentury.Thiswillaffect(5)

　　b________naturalsystemsandman-madestructures(构筑物)alongcoastlines.Coastalflooding(沿岸泛滥)could

　　causesaltwatertof________intoareaswithharmfulsalt,threateningplantsandanimalsinthoseareas.Forexample,anincreaseinthesaltcontent(含量)oftheDelaware(美国特拉华州)andChesapeake(切萨皮克市)

　　baysisthoughttohavedecreasedthenumberofoysters(牡蛎)abletoliveinthosewaters.