考研英语听力基本功训练1: Passage21
教程:考研英语听力基本功训练  浏览:656  
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    It is estimated that smoking kills over 300 000 people in the U.S.every yea

    Smoking is the largest preventable cause of premature death and disability in the U.S

    One out of six deaths in the U.S.every year is a result of cigarette smokin

    In the U.S.,about 23 billion dollars are spent in medical costs from the effects of smokin

    Over 30 billion dollars are lost because of loss of working time and decreased productivity because of smokin

    The serious diseases most frequently caused by smoking ar

    lung cancer (the risk of smokers is 10 times greater than for nonsmokers

    chronic bronchitis heart attack,stroke(the risk for smokers is almost 3 times greater than for nonsmokers

    heart pains,and leg pain

    It is never too late to quit smokin

    Two years after stopping,your risk of heart attack returns to averag

    After 10 years,your risk of lung cancer is back to nearly norma

    After 2 years,there is a decrease in lung cancer risk by about one-third.

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