Mr. Black has two cats(猫). One is big(大的) and the other is small（小的）. He likes them very much. One day his friend Mr. Green es to see him. He is surprised(惊奇). He find there are two holes(洞) in the door, a big and a small one. He says, “My dear friend, why are there two holes in your door?” “To let them in or out,” Mr. Black answers. “But why are there two holes?” asks his friend. “ How can the big cat go through（通过）the small hole?” he says.
【小题1】Mr. Black has .
A. two small cats
B. two big cats
C. a big and a small cats
【小题2】Mr. Green es to see .
A. Mr. Black B. the cats C. the holes
【小题3】Mr. Black wants to go through the two holes.
A. the big cat B. the small cat C. the two cats
【小题4】Mr. Black thinks the big hole is only for the .
A. the big cat B. the small cat C. Mr. Green
【小题5】 is not necessary（必要的）.
A. The big hole B. The small hole C. The doorC
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(答案→)C
解析：本文中的布莱克先生是个死脑筋，在门上留了一大一小两个洞来让猫通过，根本没想到小猫可以在大的洞里面通过。
【小题1】根据Mr. Black has two cats(猫). One is big(大的) and the other is small（小的）.可知选C。
【小题2】根据One day his friend Mr. Green es to see him.可知选A。
【小题3】根据“To let them in or out,” Mr. Black answers.可知选C。
【小题4】根据“ How can the big cat go through（通过）the small hole?” he says.可知选A。
【小题5】联系常识，可知那只小的猫也能通过大洞，故选B，小洞不必要。