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