题目

 Last year, Tom left school. Then he came to Taipei to find a job. He went from one company(公司)to another, but no one wanted him. With little money left, he got to the station, sad and tired. All he wanted to do was to go back to his small town. It was very late at night but the station was still full of people. They were waiting to buy tickets for the last train. Tom got the last ticket, and he was very happy.     At that time, a woman with a crying baby walked to him. She asked him to sell her the ticket. He gave her the ticket because he thought they needed it more than he di下列各组图形，可以经过平移变换由一个图形得到另一个图形的是（ ）