选出下列不同类的一项。
(       ) 1. A. pencil               B. pen                         C. ruler                       D. orange
(       ) 2. A. call           B. ring                         C. baseball                 D. watch
(       ) 3. A. this          B. that                        C. it                              D. yes
(       ) 4. A. me                    B. my                           C. his                           D. your
(       ) 5. A. am                    B. is                             C. are                          D. and
(       ) 6. A. five          B. six                           C. eight                       D. number
(       ) 7. A. red           B. zero                        C. green                     D. black
(       ) 8. A. in                       B. on                            C. under                     D. take
(       ) 9. A. bed          B. table                       C. where                    D. plant
(      ) 10 A. mom      B. son          C. daughter     D. they