阅读理解。
My friend, Dick, has a large police dog. Its name is Jack. Every Saturday afternoon, Dick takes Jack for a long walk in the park. Jack likes these long walks very much. One afternoon,a young man came to visit my friend. He stayed a long time. He talked and talked. Soon it was time for my friend to take Jack for a walk. But the man was still there. Jack became very worried. He walked around the room several times and then sat down in front of the man and looked at him. But the man kept talking. Finally Jack couldn't stand it. He went out of the room and came back a few minutes later. He sat down again in front of the man, but this time he held the man's hat in his mouth.
根据短文内容，选择正确答案。
1. From the story, we know that Jack is______.
A. Dick's good friend
B.a large police dog
C.a young man
D.the young man's dog
2. Where does Dick walk his dog every Saturday afternoon?
A. In his room.
B.In the street.
C. In the park.
D.In the field.
3. Jack became very worried one afternoon because______.
A. Dick couldn't take him out for a walk at the usual time
B. a young man cameto visit Dick that afternoon
C. Dick walkedaround his room several times
D. he couldn't find the young man's hat
4. What does the underlined word“stand"mean in the passage? It means ______in Chinese.
A. 站立
B. 理解
C. 支持
D. 忍受
5. Why did Jack sit down again in front of the man with the hat in his mouth?
A. He tried to make the man laugh.
B. He liked the young man very much.
C. He asked the young man to leave.
D. He wanted to talk with the young man.
