One day, a little boy comes into a shop and says to the shop assistant, “I want to buy twelve exercise books of 6 cents(美分)each and nine pencils of 10 cents each. How much is that altogether(总共)? ” The shop assistant writes these numbers down on a piece of paper and thinks for a minute. Then she says, “1 dollar 62 cents. ”“If I give you ten dollars, how much money will I get back? ”“You will get 8 dollars 38 cents for change . Here you are. These are the things you want. ” “No, thank you. I don’t want to buy anything. ”The boy looks at the piece of paper and says politely, “This is my math homework. Thank you very much. Can I take it away? ” 小题1:The story happens______. A.in a shop B.at a mall C.in a supermarket D.at school 小题2:The little boy comes to the shop for______. A.nine pencils B.some books C.nothing D.his homework 小题3:The little boy is______. A.bad B.naughty but clever C.stupid(愚蠢的) D.hard-working 小题4:At last the shop assistant must be______. A.excited B.happy C.angry D.surprised 小题5:The underlined word “change” in the second paragraph means______. A.零钱 B.交换 C.改变 D.金钱