选出与其他两个单词不同类的一项。
(     )（1）A. bank           B. study           C. library
(     )（2）A . in            B. on              C. is
(     )（3）A. grandfather     B. grandmother     C. driver
(     )（4）A. ruler           B. crayon          C. fish
(     )（5）A. horse          B. cow             C. animal
(     )（6）A. yes            B. no              C. not
(     )（7）A. grapefruit     B. coconut          C. noodle
(     )（8）A. these           B. those           C. this
(     )（9）A. milk           B. juice            C. cherry
(     )（10）A. China         B. Britain         C. Nanjing