Unit3 Underthesea Savetheoceananimals茫茫海洋孕育了无数海洋生物 然而 其中的绿海龟 蓝鲸和大白鲨正面临灭绝的危险 让我们一起拯救这些濒危动物吧 Manykindsofanimalsliveintheocean Someofthoseanimalsareendangered Onlyafewareleftintheworld Scientistsaretryingtokeependangeredanimalssafe 单元话题阅读 BluewhaleThebluewhaleisthelargestanimalintheworld Itisasbigasanairplane Thewhalecangrowto90feetlongandweighmorethan100tons Thebluewhalelivesinalltheoceans Iteatstinyanimalscalledkrill 磷虾 Abluewhalecaneatabout4tonsofkrilleachday Bluewhalesareendangered Peopleoncehuntedthemfortheirmeatandfat Thefatwasusedtomakeoilforlamps Speciallawsnowprotectbluewhales GreenseaturtleThegreenseaturtlelivesinwarmwaters Anadultgreenseaturtleeatsmostlyplants Itcanweighupto440pounds Itsshellcangrowto4feetlong Agreenseaturtlecan tpullitsheadintoitsshellthewaysometurtlescan