____ A.cow B. horse C. sheep D. animal
____ A. pig B. litter C. throw D. open
____ A. zoo B. farm C. great D. school
____ A. moo B. tiger C. quack D. neigh
____ A. duck B. cows C. horses D. pigs
3.5×103
=3.5×100+3
=350+3
=353
下列各句中,没有语病的一组是( )