选出不同类的单词，并将序号写在前面括号中。
(1)( )A. music B. science C. sports D. long hair
(2)( )A. Desk B. chair C. bed D. pen
(3)( )A. teacher B. classroom C. classmate D. friend
(4)( )A. Chinese B. fat C. tall D. thin
(5)( )A. twenty B. painting C. thirty D. Fifty