Mabel is a cashier（收银员）in a big shop in New York. People can buy medicine, watches, sweets, and many other things. They pay Mabel for the things they buy.

　　At the shop people can also buy lottery tickets（彩票）. They pay one dollar for a lottery ticket. There are pictures on the ticket. Some pictures are winning pictures. Some pictures are losing pictures. Most people win nothing. Some people win two dollars. A few lucky people win thousands of dollars.

　　One day Mabel was working at the shop. She sold three lottery tickets to a woman. The woman looked at the pictures on the tickets. Then she threw the tickets on the counter（柜台）and walked away.”These are losing pictures”, she thought.

　　“Excuse me!”Mabel called to the woman.”You won $50,000!”

　　The woman came back to the counter. She took the winning ticket and looked at it.”You are right.”she said.” won $ 50,000.”The woman walked away slowly, looking at the ticket again and again. Then she turned around.”Thank you! Thank you very much!”she said to Mabel.

　　“Of course I want the money,”Mabel said.“But it was her ticket. It wasn't my ticket.”

　　“Well, I am sorry that you are not rich,”her mother said.”But I am happy that you are honest（诚实）.”

A．receives and pays out money

B．puts things on the shelves

C．helps people choose things

D．carries things for old people

A．all her three tickets were winning tickets

B．all her three tickets were losing tickets

C．Mabel found the winning ticket and gave it back to her

D．she found the winning ticket by herself

A．she won $ 50,000,too

B．her mother told her not to do so

C．she didn't want to have anything that was not hers

D．her mother was very rich