【正确答案】 B

【答案解析】[听力原文] March brought attention to the president's health law. The Supreme Court heard arguments over its constitutionality. America is the rare Western country without a universal insurance scheme. But, as a new study points out, a lack of insurance is only part of America's health problem. On April 3, the University of Wisconsin and the Robert Wood Johnson Foundation, a philanthropic outfit, released a new report on health in America's counties. The report is part of a string of efforts to sort through the mounds of data on health and the factors that affect it. The jumble of information does not reveal a perfectly clear picture. But it begins to illuminate the particular nature of America's health and why it is so dismal. The report takes a close look, inspecting data for more than 3000 counties. The authors, led by Catlin of the University of Wisconsin, rank each state's counties according to health outcomes: premature death, poor mental and physical health and low birth weights for babies. Separately, they examine the factors that influence health, such as clinical care, income and behavior. Wide gaps existed within each state. Within counties, factors seem to contradict one another. In Putnam, New York's healthiest county, 29% of adults are obese, compared with 28% in the Bronx, New York's least healthy county. Putnam also has higher rates of binge drinking—21% compared with 14% in the Bronx. Yet the Bronx has lower education rates, eight times the rate of teen pregnancies and New York's highest concentration of fast food restaurants. Lack of insurance, therefore, is only part of the puzzle. What can we learn about America's health problem?