6．
阅读短文，选择正确的答案。
It's Sunday. Tom and I go to the city farm. It's a big farm. We can see
many animals and trees. There are fourteen hens（母鸡）over
there. Under the trees, I can see eleven ducks. There are only four ducks in
the river. Look at these apples. Tom can see twenty apples, but I can see
eighteen apples. Where are the other two?Ha ha! They are in Tom's mouth! He
likes apples very much.
