American medical researchers have just reported the first scientific proof that even a small amount of exercise will help us 1 longer. The 2 was carried out by scientists at Harvard and Stanford universities, which were very famous in America. It involved (涉及) about 17,000 students who 3 Harvard between 1916 and 1950.

　　The scientists 4 their research in 1960. They collected a lot of facts and studied the medical 5 of every one in the study group 6 living and dead. Members of the study group 7 how much they walked, how many 8 they climbed, what kind of sports they 9 in for and many other things they 10 each week. The scientists checked information about height, weight, 11 pressure and family records of heart disease. Their research showed exercise helped 12 the chance of death from a number of diseases. They also concluded that sports and games 13 people's bodies and prevented them from putting on weight.

　　They found that two thirds of people who had heart 14 never exercised. 15 of the scientists said the most important 16 was that people who do not exercise have more heart diseases, but they 17 realize the importance of sports until they get the disease. He also said that it might be 18 now to get them to exercise when their doctors 19 them to. They 20 the doctors' advice very seriously and they want to keep healthy and have a longer life.

1．

[　　]

2．

[　　]

3．

[　　]

4．

[　　]

5．

[　　]

6．

[　　]

7．

[　　]

8．

[　　]

9．

[　　]

10．

[　　]

11．

[　　]

12．

[　　]

13．

[　　]

14．

[　　]

15．

[　　]

16．

[　　]

17．

[　　]

18．

[　　]

19．

[　　]

20．

[　　]

I lived in Dallas, Texas nearly all my life with my mom, dad and older sister．We were         1  to respect others, value education, and get all that we could out of life．My parents always say, “    2     hard and the world is yours．” They are never without a  3    word of advice or a bit of encouragement when life gets tough．

       My parents always    4     me to go to college．However, when I     5    at 16 years old that I’d rather get married to a man than go to college, they    6     stopped telling me they loved me and I could do anything I wanted to．    7    , they persuaded me．I graduated from high school and currently     8     the University of Oklahoma studying medicine．I want to make the     9     a better place to live in．

       Every time I call home to tell them about a    10     I received in Chemistry Lab or Microeconomics or     11     class it is that I’m working hardest for at the moment, they tell me how     12     of me they are．I know there are college kids out there that have no one to call home to when they get an “A” on a project and I feel incredibly     13     to have my parents．

       Don’t get me wrong: We’ve had our share of     14    ．I was the angry teenager and they were the awful     15     that wouldn’t let me stay out all night or let me get my tongue pierced．But somehow, we    16   to work through those issues．They never    17                    loving in me or believing in me．

       I    18    everything I am to my parents．Without their constant love and      19    , I wouldn’t believe I can change the world．My parents taught me to always         20    for what I believe in．So I’m working toward something really great and can only hope I continue to make them proud．

1．A．brought                 B．introduced           C．raised                  D．produced

2．A．Educate                B．Work                  C．Train                  D．Practise

3．A．helpful                  B．harmful               C．stressful              D．meaningful

4．A．reminded               B．expected             C．supposed             D．designed

5．A．hesitated               B．judged                 C．fixed                   D．decided

6．A．never                    B．ever                    C．seldom                D．hardly

7．A．Carefully               B．Hopefully             C．Thankfully           D．Delightfully

8．A．serve                    B．attend                  C．admit                  D．join

9．A．fortune                 B．planet                  C．universe              D．world

10．A．grade                  B．problem               C．failure                 D．value

11．A．whenever            B．wherever             C．whichever           D．however

12．A．modest                B．proud                  C．ashamed              D．nervous

13．A．annoyed              B．praised                C．relaxed                D．blessed

14．A．lessons                B．problems             C．moments             D．experiences

15．A．teachers              B．directors              C．couples               D．parents

16．A．managed             B．attempted            C．succeeded           D．conducted

17．A．concluded           B．began                  C．prevented            D．stopped

18．A．pay                     B．owe                    C．own                    D．spend

19．A．agreement           B．excitement           C．encouragement    D．statement

20．A．fight                  B．look              C．defend            D．protect