读一读下列单词.选择每组中不同类的单词. ( )

( ) 2. A. America

( ) 3. A. bread

( ) 4. A. man

( ) 5. A. twenty

( ) 6. A. bag

( ) 7. A. monkey

( ) 8. A. pencil

B. Canada

B. water

B. teacher

B. night

B. blue

B. mother

B. eraser

C. China

C. hot dog

C. boy

C. nineteen

C. brown

C. mouse

C. ruler

D. Zhejiang

D. hamburger

D. girl

D. nine

D. black

D. duck

D. school