考研听力基本功4 Passage1

（单词翻译）

It is estimated that smoking kills over 300 000 people in the U.S.every yea
[00:07.63]Smoking is the largest preventable cause of premature¹ death and disability in the U.S
[00:15.31]One out of six deaths in the U.S.every year is a result of cigarette smokin
[00:22.75]In the U.S.,about 23 billion dollars are spent in medical costs from the effects of smokin
[00:31.40]Over 30 billion dollars are lost because of loss of working time and decreased productivity because of smokin
[00:41.12]The serious diseases most frequently caused by smoking ar
[00:45.27]lung cancer (the risk of smokers² is 10 times greater than for nonsmokers
[00:50.94]chronic bronchitis heart attack,stroke(the risk for smokers is almost 3 times greater than for nonsmokers
[01:02.48]heart pains,and leg pain
[01:05.57]It is never too late to quit smokin
[01:09.07]Two years after stopping,your risk of heart attack returns to averag
[01:14.79]After 10 years,your risk of lung cancer is back to nearly norma
[01:20.14]After 2 years,there is a decrease in lung cancer risk by about one-third.