选出每组单词中不同类的一项. ( ) 1. A. doctor ( )

( ) 2. A. sister

( ) 3. A. love

( ) 4. A. dancing

( ) 5. A. her

B. father

B. short

B. thanks

B. him

C. brother

C. tall

C. laughing

C. our

D. student

D. fat

D. talking

D. it