题目内容：

Double Trouble

When I was eight, I wanted a toy and needed $10 to buy it. But, as usual, I was broken. I decided to ask my 11-year-old sister, Kathleen, for a loan. I went to her room, __________her for the cash. Laughing, she agreed to lend me the money, but__________, "I will charge you 10 percent compound interest every __________until you pay me back."

"Compound interest---what's that?" I asked.

"Well, interest is what you call the__________money borrowers have to pay back on a loan," she explained. "Compound interest means that the interest payments get bigger and bigger the__________it takes you to pay back the loan. To repay the loan, you will need to give me $11 after one month. If you wait two months to pay me back, your__________ will grow from $10 to $11. So I'll be charging you interest on $11. Then I will add that interest to the $11 you already owe me, for a __________of $12.10. That's what you'll owe after two months."

"Sure. I get it," I said. Though truthfully, I was getting __________.

Kathleen lent me the money, and I bought the toy. My birthday came a month later, and my mom gave me $10. __________, that was just the amount I needed to buy another toy I wanted__________. I __________paying my sister for a month. After another month, I forgot about the loan.

Several months later, on Christmas morning, my sister and I each found a $20 bill in our stockings. I was just putting it into my pocket__________Kathleen tapped me on the shoulder.

"Sorry, kiddo. That's mine. I'm __________your debt."

"Huh?" Then I__________ the loan. "Hey! How can it be that much? I only borrowed $10."

"True," she said, "but interest has been compounding for eight months. Now you owe me $21.43." She paused, and then, smiling triumphantly, said, "You can pay me the $1.43."

I__________to believe that a $10 loan could more than double so quickly. Much to my __________, my sister got her pencil and tablet and showed me exactly how it all __________.

My head__________as I tried to keep track of Kathleen's calculations, but this time, I got the basic__________of compound interest. I learned from this__________experience that borrowing money can be "double trouble" in no time.

1.A.begging B.blaming C.searching D.preparing

2.A.suggested B.swore C.explained D.added

3.A.month B.year C.week D.day

4.A.little B.extra C.enough D.same

5.A.shorter B.more C.longer D.less

6.A.cash B.debt C.note D.saving

7.A.total B.cost C.number D.bill

8.A.encouraged B.shocked C.satisfied D.confused

9.A.Gradually B.Obviously C.Hopefully D.Unfortunately

10.A.seriously B.desperately C.secretly D.willingly

11.A.decided on B.put off C.gave away D.cared about

12.A.after B.when C.while D.until

13.A.carrying B.relying C.collecting D.focusing

14.A.neglect B.complained C.stated D.remembered

15.A.decided B.pretended C.refused D.managed

16.A.relief B.delight C.annoyance D.regret

17.A.added up B.showed up C.turned up D.sped up

18.A.turned B.hurt C.stuck D.nodded

19.A.idea B.lesson C.benefit D.discovery

20.A.unfair B.worthless C.painful D.decisive