四,六级讲义--2011年秋季大学英语四级考试强化讲义.pdfVIP

2011年秋季大学英语四级考试强化讲义 主讲：张　培 阅读理解部分 四级真题同源阅读——深度剖析四级阅读命题特点与考点分布 Millions of Americans in Chronic Pain By KATHLEEN KINGSBURY Nursing a migraine today? New research shows you re not alone. More than a quarter of Americans suffer daily pain, a condition that costs the U.S. about $60 billion a year in lost productivity. And how often you re in pain depends largely on the size of your paycheck. Americans in households making less than $30,000 a year spend nearly 20% of their lives in moderate to severe pain, compared with less than 8% of people in households earning above $100,000, according to a landmark study on how Americans experience in pain. The findings, published Thursday in the British j ournal the Lancet, also found that participants who hadn t finished high school reported feeling twice the amount of pain as college graduates. To a significant extent, pain does separate the classes, says Princeton economist Alan Krueger, who authored the study along with Dr. Arthur Stone, a psychiatry professor at Stony Brook University. Krueger notes that the type of pain people reported typically fell on either side of the rich- poor divide. Those with higher incomes welcome pain almost by choice, usually through exercise, he says. At lower incomes, pain comes as the result of work. Indeed, Krueger and Stone found that blue-collar workers felt more pain, from physical labor or repetitive motion, while on the j ob than off, which at least offers hope that the problem can be mitigated. This finding emphasizes the need for pain preventing measures [in the workplace] such as better ergonomics, wrote Juha H.O. Turunen, a professor of social pharmacy at Finland s University of Kuopio, in an accompanying commentary to the report. People with chronic pain also worked less, the