阅读理解

    One day. a little boy runs into u shop and says to the shop assistant(店员),I want to buy twelve exercise books of 6 cents each and nine pencils of 10 cents each. How much are those altogether(总共)?"

    The shop assistant writes these numbers down on a piece of paper and thinks for a minute. Then she says" One dollar sixty-two cents." If I give you ten dollars, how much money will I get back?" ''You will get eight dollars thirty-eight cents change. Here you are. These are the things you want."

    "No, thank you. I don't want to buy anything, ⁿ the boy looks at the piece of paper and says politely (有礼貌地).

    "This is my maths homework. Thank you very much. Can I take it away?"