找出不同类的单词。（每小题2分，共20分）
(   ) A. boy             B. teacher                C. girl
(   ) A. USA             B. China                  C. Shandong
(   ) A. student          B. father                C. mother
(   ) A. apple            B. banana                C. milk
(   ) A. tall             B. she                   C. long
(   ) A. monkey           B. giraffe               C. pen
(   ) A. family           B. grandpa               C. grandma
(   ) A. he               B. is                    C. she
(   ) A. eleven           B. it                    C. twelve
(   ) A. orange          B. white                 C. dog