(1) Long ago, the horse had four toes on each of its ______.

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

(2) The cats were ______ the horses at that time.

    A. much bigger          B. smaller than            C. bigger than   

(3) Which of the three sentences is true?

     A. The weather stays the same the whole year all over the world.

     B. When the weather changed, animals began to change too.

     C. Cats were bigger in the past than they are today.     

(4) On the dry hard land ______.

     A. horses needed a lot of room for running

     B. a horse needed more than four toes for running

     C. horses needed only their middle toes for running        

(5) Now each horse has ______ on its feet.     A. one toe       B. three toes         C. four toes  

参考答案   (1) B   (2) C     (3) B    (4) C    (5) C