阅读理解。Asweallknowtheoceanmoves.Butwaves(波浪)breakingonthebeachmaketheoceanfun.Whenyoustandontheshore(海岸)andlookatthewavesitseemslikethewaterisrolling(翻滚)intowardyou.Butthew

　　阅读理解。

　　Asweallknowtheoceanmoves.Butwaves(波浪)breakingonthebeachmaketheoceanfun.When

　　youstandontheshore(海岸)andlookatthewavesitseemslikethewaterisrolling(翻滚)intowardyou.

　　Butthewaterisnotreallymovingforward.Whatyouseemovingiswaveenergy.Andwaveenergycomes

　　fromthewind.

　　Let'sthinkabouthowthisworks.Aswaveenergypassesthroughthewatertheenergymakesparticles

　　(粒子)ofwatermoveupanddown.Justgiveyouanexampleofawavepassingunderabasketball.Weput

　　abasketballonthesea.Whenthewindblowsawavecomesfrombehindthebasketball.Thebasketball

　　movesuptothetopwiththewave.Thenthewavecontinuesandleavesthebasketballbehind.Thebasketball

　　lookslowerbutitdoesn'tmoveforward.That'sbecausethewaveenergymovesthewaterthatisunderthe

　　basketballupanddownasitpasses.

　　Sowhycanyouseeawaveknockyoudownontheshore?Whenawavemovestowardtheshorethe

　　bottom(底部)ofthewaveslowsdownbecauseitmeetstheoceanfloor.Butthetopwhichiscalledcrest

　　keepsmoving.Thedifferentactioncausesthewavetofalloverorbreakontotheshore.Ifawaveisvery

　　largeitcarriesalotofenergywhenithitstheland.Astimegoesbywavescanbreakupandcarryaway

　　therocksandotherthingsontheshore.Shorelinesarechangingallthetimebecauseofwaveaction.

　　1.______isreallymovingforwardwhenyoulookatthewaves.

　　[ ]

　　A.Water

　　B.Waveenergy

　　C.Waterandwaveenergy

　　2.Match(与……相匹配)thesentenceswiththepicturesandchoosetherightanswer.

　　(1)Thebasketballmovesuptothetopwiththewave.

　　(2)Thewavecontinuesandleavesthebasketballbehind.

　　(3)Whenthewindblowsawavecomesfrombehindthebasketball.

　　a b c

　　A.a-(2)

　　b-(1)

　　c-(3)

　　B.a-(3)

　　b-(2)

　　c-(1)

　　C.a-(3)

　　b-(1)

　　c-(2)

　　3.Theunderlinedword"crest"inthepassagemeans" "inChinese.

　　[ ]