题目内容：

Before reading McCarty's story I had thought that a smile just invited unwanted attention.Afterwards I had a____opinion.I found that smiling could____myself and the people around me.

Recently I became a(n)____in my son's school.The more I drove the more I heard the other drivers____about a new crossing guard,the person who____the flow of traffic so that cars can get in and out of the school area____and safely.The guard,not having much____,seemed unsure when he made a decision,which often____long lines of heavy traffic.Most days he looked worried.I saw cars pass by him with the____drivers.I wanted to do something just to make the guard____.

Then I realized I did have the____to change at least one interaction（互动）in his day.One morning when the crossing guard gave me a(n)____to pull into the school,I moved my car forward.Then,just before I began my____,I gave him a big smile.He saw me,and then his face____.He smiled back at me as I continued my turn.

That's it.That's all it took.I knew I had made a____in his day.And____I have not spoken a word to this man,I know he____me because we smiled to each other every time he sees me behind the wheel.

Now,I____smile toward people around me.I can't speak for the people who have____these smiles,but I can say my life is so much____,so much more joyous,that I can't imagine how I lived without such a smile.I hope I can make others share their happiness just as freely.

1.A. poor    B. new    C. strong    D. popular

2.A. change    B. protect    C. educate    D. surprise

3.A. teacher    B. cleaner    C. driver    D. adviser

4.A. ask    B. argue    C. learn    D. complain

5.A. admits    B. controls    C. breaks    D. notices

6.A. quickly    B. closely    C. quietly    D. lately

7.A. interest    B. discussion    C. experience    D. consideration

8.A. drew    B. reduced    C. followed    D. caused

9.A. careless    B. impatient    C. drunk    D. dangerous

10.A. relaxed    B. proud    C. nervous    D. confused

11.A. truth    B. message    C. power    D. program

12.A. address    B. gift    C. report    D. sign

13.A. work    B. turn    C. test    D. journey

14.A. softened    B. reddened    C. darkened    D. hardened

15.A. speech    B. mistake    C. decision    D. difference

16.A. now that    B. as if    C. even though    D. only if

17.A. believes    B. recognizes    C. supports    D. interviews

18.A. always    B. never    C. hardly    D. sometimes

19.A. sent    B. enjoyed    C. collected    D. received

20.A. easier    B. longer    C. brighter    D. busier