第三节完形填空(共20小题；每小题1.5分，满分30分)
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项。
I teach economics at UNLV three times per week. Last Monday, at the beginning of class, I31asked my students how their weekend had been. One young man said that his weekend had not been so good. He had his wisdom teeth32. The young man then proceeded to ask me why I33seemed to be so cheerful.
His question34me of something I’d read somewhere before:“Every morning when you get up, you have a choice about how you want to35life that day,” I said.“I choose to be cheerful.”
“Let me give you a(n)36,” I continued,37all sixty students in the class.“In addition to teaching here at UNLV, I also teach at the community college in Henderson, 17 miles down the freeway from where I live. One day a few weeks ago I drove to Henderson. I38the freeway and turned onto College Drive. I only had to drive another quarter mile down the road to the college. But just then my car39. I tried to start it again, but the engine wouldn’t40. So I put my flashers on, grabbed my books, and41down the road to the college.”
“As soon as I got there I called AAA(汽车协会) and42for a tow truck to meet me at my car after class. The secretary in the Provost’s office asked me what had happened.‘This is my43day,’ I replied, smiling.”
“‘But your car breaks down.’ She was puzzled.‘What do you mean?’”
“‘I live 17 miles from here.’ I replied.‘My car could have broken down anywhere along the freeway. It didn’t.44, it broke down in the45place:off the freeway, within walking distance of here. I’m still able to teach my class, and I’ve been able to arrange for the tow truck to meet me after class. If my car was46to break down today, it couldn’t have been arranged in a more convenient fashion.’”
“The secretary’s eyes opened wide, and then she smiled. I smiled back and headed for class.” So ended my story.
I47the sixty faces in my economics class at UNLV. Despite the early hour, no one seemed to be asleep.48, my story had touched them. Or maybe it wasn’t the story at all.49, it had all started with a student’s50that I was cheerful.
31.A.seriously     B.cheerfully           C.curiously            D.coldly
32.A.cut                B.broken               C.lost                    D.removed
33.A.never            B.seldom               C.always               D.sometimes
34.A.reminded              B.asked                 C.informed            D.mentioned
35.A.approach              B.love                   C.give                   D.enjoy
36.A.lesson            B.idea                   C.story                  D.example
37.A.addressing     B.facing                C.attracting            D.lecturing
38.A.entered          B.followed            C.exited                D.took
39.A.died                     B.destroyed           C.settled                D.parked
40.A.turn round     B.turn over            C.turn back            D.turn away
41.A.moved           B.marched             C.struggled            D.turned
42.A.required        B.applied               C.demanded           D.arranged
43.A.good             B.bad                    C.lucky                 D.hard
44.A.However              B.Therefore           C.Instead               D.Besides
45.A.perfect          B.empty                C.terrible           D.free
46.A.wished          B.asked                 C.supposed            D.meant
47.A.examined       B.scanned              C.studied               D.analyzed
48.A.Somehow      B.Anyhow             C.Thus                  D.Therefore
49.A.In addition     B.In all                 C.In fact                D.In general
50.A.observation    B.recognition         C.judgment            D.puzzle