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 broke. 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 _______ me the money, but added, “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 _______ you take 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 put off paying my sister for a month. After another month, I _______ 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 _______ on your debt.”

“Huh?” Then I remembered the loan. “Hey! How can it be that much? I _______ borrowed $10.”

“True,” she said, “but interest has been compounding for eight months. Now you _______ me $21.43.” She paused, then added. “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 added up.

My head _______ as I tried to keep track of Kathleen’s _______, but this time, I got the basic idea of compound interest. I _______ the hard way that borrowing money can be “double trouble” in no time.

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

2.A. pay    B. give    C. lend    D. hand

3.A. month    B. year    C. week    D. day

4.A. little    B. same    C. enough    D. extra

5.A. less    B. longer    C. more    D. shorter

6.A. cash    B. saving    C. note    D. debt

7.A. total    B. cost    C. number    D. bill

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

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

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

11.A. forgot    B. knew    C. talked    D. cared

12.A. after    B. until    C. while    D. when

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

14.A. normally    B. nearly    C. only    D. really

15.A. owe    B. offer    C. take    D. give

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

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

18.A. turned    B. nodded    C. stuck    D. hurt

19.A. calculations    B. excuses    C. directions    D. discoveries

20.A. explored    B. learned    C. explained    D. questioned