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    　　Comprehensive lifestyle changes including a better diet and more exercise can lead not only to a better physique, but also to swift and dramatic changes at the genetic level, U．S．researchers said on Monday．In a small study, the researchers tracked 30 men with low-risk prostate cancer(前列腺癌)who decided against conventional medical treatment such as surgery and radiation or hormone therapy．

    　　The men underwent three months of major lifestyle changes, including eating a diet rich in fruits, vegetables, whole grains, legumes and soy products, moderate exercise such as walking for half an hour a day, and an hour of daily stress management methods such as meditation(冥想)．As expected, they lost weight, lowered their blood pressure and saw other health improvements．But the researchers found more profound changes when they compared prostate biopsies taken before and after the lifestyle changes．After the three months, the men had changes in activity in about 500 genes－including 48 that were turned on and 453 genes that were turned off．The activity of disease-preventing genes increased while a number of disease-promoting genes, including those involved in prostate cancer and breast cancer, shut down, according to the study published in the journal Proceedings of the National Academy of Sciences．

    　　The research was led by Dr．Dean Ornish, head of the Preventive Medicine Research Institute in Sausalito, California, and a well-known author advocating lifestyle changes to improve health．“It's an exciting finding because so often people say,‘Oh, it's all in my genes, what can I do?’Well, it turns out you may be able to do a lot,”Ornish, who is also connected with the University of California, San Francisco, said in a telephone interview．“'In just three months, I can change hundreds of my genes simply by changing what I eat and how I live．That's pretty exciting,”Ornish said．“The implications of our study are not limited to men with prostate cancer．”

    (1)

    The article basically states that a healthy lifestyle ________．

    [　　]

    A．

    can even change your genes for the better．

    B．

    has no effect on your genes．

    C．

    is good for the environment．

    D．

    helps men recover from prostate cancer．

    (2)

    Apart from eating healthy food and exercising, the men in the study ________．

    [　　]

    A．

    were put under a lot of stress．

    B．

    were walking for hours a day．

    C．

    were taught stress management methods．

    D．

    were thinking for a whole day．

    (3)

    In total, how many disease-preventing genes turned on as a result of the healthy lifestyle?

    [　　]

    A．

    30

    B．

    453

    C．

    500

    D．

    48

    (4)

    Which of the following is NOT mentioned in the article?

    [　　]

    A．

    The men with low-risk prostate in the study lost weight and lowered their blood pressure．

    B．

    A famous author and Dr．Dean Ornish led this research．

    C．

    Dr．Dean Ornish expressed his optimism about this research in a telephone interview．

    D．

    Conventional medical treatment has no effect on the men with prostate cancer．

    答案：1．A;2．C;3．D;4．D;
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    　　BELIEVE it or not, the color of the tie Barack Obama wore to the inauguration(就职典礼)is now a hotly debated topic．The level of public interest in Obama’s tie might seem strange but many people believe his choice will symbolize the type of government he plans to run, as the color of a politician’s tie is thought to convey ideas of power, trustworthiness and more．

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    [　　]

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    [　　]

    A．

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    (4)

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    [　　]

    A．

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    C．

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    D．

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    　　Careercast．com is out with its list of best and worst jobs of 2012．It's bad news for the writer of this story, but much brighter for the folks who program the code that keeps this website busy．

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    Software Engineer　　　　　Lumberjack　　　　　　Enlisted Soldier

    Actuary　　　　　　　　　Dairy Farmer　　　　　　Firefighter

    Human Resources Manager　Enlisted Military Soldier　　Airline Pilot

    Dental Hygienist　　　　　Oil Rig Worker　　　　　　Military General

    Financial Planner　　　　　Reporter(Newspaper)　　　Police Officer

    Audiologist　　　　　　　Waiter/Waitress　　　　　Event Coordinator

    Occupational Therapist　　Meter Reader　　　　　Public Relations Executive

    Online Advertising Manager　Dishwasher　　　　　Corporate Executive Computer Systems Analyst

    Butcher　　　　　　　　　Photojournalist　　　　Mathematician

    Broadcaster　　　　　　　Taxi Driver　　　　　　

    (1)

    Who might be most interested in the passage?

    [　　]

    A．

    Job-hunters．

    B．

    Net surfers．

    C．

    Employers．

    D．

    Educators．

    (2)

    Which of the following was not considered when Careercast．com ranked the top 200 jobs?

    [　　]

    A．

    Hiring outlook．

    B．

    Pressure．

    C．

    Mental demands．

    D．

    Salary．

    (3)

    What do we know about the lumberjack?

    [　　]

    A．

    Although the lumberjack has high unemployment, it isn't considered the worst job．

    B．

    On the best jobs list, the lumberjack isn't at the bottom．

    C．

    More lumberjacks' services will be needed after 2016．

    D．

    A lumberjack earns less than half of a software engineer's salary a year．

    (4)

    According to the passage, the list is good news for ________．

    [　　]

    A．

    Online Advertising Managers．

    B．

    Reporters．

    C．

    Firefighters．

    D．

    Dairy Farmers．

    (5)

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    [　　]

    A．

    To describe the advantages of different careers．

    B．

    To provide career information．

    C．

    To explain why a software engineer is the best job．

    D．

    To analyze why a lumberjack is the worst job．

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