选出每组单词中不同类的一项.（ ）1；A;hamburger.B;hand.C;hot dog.( )2;A;duck.B;milk.C;tea.
( )3;A;ice-cream.B;French fries.C;pencil-case.( )4;A;juice.B;coffee.C;cat.5;( )A;bread.B;black.C;cake.