选出每组中不属于同一类的单词,并将其标号填入题前括号内。(5小题,每小题2分,共10分)
(1)A.pig B.red C.pink
(2)A.elephant B.eight C.bear
(3)A.milk B.juice C.fish
(4)A.hand B.head C.bread
(5)A.mouth B.ruler C.pencil