找出不同类的单词。
(   )（1）A. balloon     B. kite       C. sure
(   )（2）A. ship       B. sharpener   C. plane
(   )（3）A. he         B. she        C. her
(   )（4）A. do         B. can        C. does
(   )（5）A. plane        B. ship      C. boat