题目内容：

When I settled in Chicago, my new city seemed so big and unfriendly. Then I had a          problem and had to go to hospital for a          examination.

It seemed a small            compared to the one I was about to face, but things started to go           right from the beginning. Not having a car or          the city, I was depending on a couple of buses to get me from A to B，           I’d left myself plenty of time, soon it was           I was going to be late, as I had mistakenly boarded a bus that was taking me in the           direction.

I       the bus and stood on the pavement not knowing what to do, I looked into the eyes of a             who was trying to get past me,            instead of moving on, she stopped to ask if  I was            . After I explained my           to her, she pointed to a bus stop across the street, where a bus would take me back into the city to my          . Sitting there waiting, I felt          that someone had been willing to help.          , hearing a horn（喇叭）nearby, I looked up to see a   car with my new friend          at me to get in, she had returned to offer me a           to the hospital.

Such unexpected          from a passer-by was a lovely gift to receive. As I climbed out of the car at the hospital and turned to thank her, she smiled and told me not to lose            for all things are possible.

1.A. physical       B. traveling      C. social      D. housing

2.A. scientific      B. final          C. previous    D. thorough

3.A. chance          B. challenge      C. success     D. error

4.A. wrong           B. easy        C. fast       D. ahead

5.A. leaving        B. visiting      C. knowing      D. appreciating

6.A. Although       B. Since          C. Unless      D. Once

7.A. strange        B. necessary      C. obvious     D. important

8.A. same           B. right          C. general    D. opposite

9.A. looked at      B. waited for   C. got off     D. ran into

10.A. driver        B. friend        C. stranger    D. gentleman

11.A. Especially     B. Surprisingly C. Probably   D. Normally

12.A. nervous        B. excited       C. OK           D. dangerous

13.A. idea           B. motivation    C. excuse     D. situation

14.A. appointment   B. apartment    C. direction   D. station

15.A. afraid        B. grateful     C. certain     D. disappointed

16.A. Thus           B. Then          C. Perhaps    D. Surely

17.A. staring       B. laughing      C. waving     D. shouting

18.A. lift         B. suggestion    C. bike       D. guidebook

19.A. results      B. news          C. kindness    D. appearance

20.A. power         B. faith         C. touch      D. support