Unit3Task&ProjectⅠ
阅读理解A(2013·常州高一检测)Throughoutseafaringhistory,shipsandsailorshavebeenlosttostorms,accidentsandwar
Untilrecently,mostoftheseshipswereweakwoodensailingvessels(船只),theirskeletons(骨架)quicklyeatenawaybyseacreatures
Now,largevesselsmadeofsteelfloatontheseas
Thousandsofthesehugeshipshavebeenlostintimesofwarandintimesofpeace
Thebonesofgreatmetalships,unlikethewoodenvesselsofold,survivethedestructionofthesealongenoughtobecomehomeandharborforunderwaterlifeofallkinds
Theshiphasbeenunderwaterforonlyfivedays
Itssurfaceisstillclean
Sixweekslater,thewreckiscoveredwithaslimylayerofalgae(海藻)
Soon,animalsthatneedtoattachthemselvestoahardsurface,likethefeatherdusterworms,makethewrecktheirhome
Inwarmwaters,coralpolyps(珊瑚虫)settleonthewreckandbegintheprocessofbuildingarock-likecrustontheship