Have you ever seen a horse with toes (脚趾)? Millions of years ago, horses had many toes.They had four toes on each front foot.They had three toes on each back foot.The horses were smaller than cats.

These small horses lived in the forest.Their many toes helped the horses run over the soft wet ground.

It was very hot in the forest.But the weather changed.It became cold.Many trees couldn’t live in cold weather.The trees died and fell.Forest became open field.The sun made the ground dry and hard (坚硬).Horses began to change too.They began to get bigger.This took a long time.On the dry hard land, horses needed only their middle toes for running.At last their middle toes became hard.

1.Long ago, the horse had four toes on each of its __________.

A．back feet          B．front feet          C．right feet          D．left feet

2.The cats were __________ the horses at that time.

A．as big as          B．smaller than        C．bigger than        D．as small as

3.When the weather changed, __________.

A．many trees grew well in cold weather        B．animals began to change too

C．cats were older than the horses            D．horses were the same as they are

Complete the sentences with the given words in their proper forms (用括号中所给单词的适当形式完成下列句子。每空格限填一词)
【小题1】Mr. White lives on the________ floor in that building. (five)
【小题2】Walking in the space is one of the _____ of our time. (wonder)
【小题3】Tom will study still __________ next term. (hard)
【小题4】He is very careless, so he is __________ to be in charge of the experiment. (fit)
【小题5】The plane landed ________ at last after flying in the storm for about one hour. (safe)
【小题6】Have you ever seen how to _______ a cow? (milk)
【小题7】Not everyone enjoys fast food. Jack is the one who ________ hamburgers. (like)
【小题8】At the end of every year, some people go back to their ________ homes.(national)

– Have you ever seen ______ film Roman Holiday?

–Yes. I think it is ______ excellent movie.

—Have you ever seen ______ film Roman Holiday?  —I think it is ______ interesting one.

   A. the; an        B. a; the        C. a; an        D. the; a