heAmerican'sclaimtothesealswasbasedon______.
A.theideathatthesealscomingtoAmericanshoreswereAmericanproperty
B.theideathattheywereinternationalarbitr ators
C.thefactthattheUnitedStateshadpurchasedallthewatersoffAlaska
D.thefactthattheUnitedStateshadspecialrightsforopen-eaareas
正确答案:A[解析]见文章第一段第八句话。



