Mr Black has two cats. One is big and the other is small. He likes them very much. One day his friend Mr Green comes to see him. He is very surprised. He finds there are two holes in the door, a big hole and a small hole. “My dear friend, why are there two holes?” asks his friend. “How can the big cat go through the small hole?” he says.

1.Does Mr Black like his cats?

A Yes, he is.

B Yes, he does.

C No, he isn’t.

D No, he doesn’t.

解析：选B。B细节理解题。根据“He likes them very much.”可知，他喜欢他的猫。故选B。

2.Mr Green comes to Mr Black’s house____________.

A to see the two holes

B to visit Mr Black

C to have a look at the two cats

D to go through the hole

解析：选B。B细节理解题。根据“One day his friend Mr Green comes to see him.”可知，他朋友是来看他的。故选B。

3.Mr Green is very __________ to see the two holes.

A happy

B sad

C surprised

D angry

解析：选C。C细节理解题。根据“He is very surprised.”可知，格林先生发现猫洞后很惊讶。故选C。

4.The big hole is for_____________.

A the big cat

B the small cat

C two cats

D Mr Black

解析：选A。A细节理解题。根据“He finds there are two holes in the door, a big hole and a small hole.”和“How can the big cat go through the small hole?”可知，大洞只是为了大猫设计的。故选A。