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  3. The U. S. government is asking Americans to eat less and exercise more in an effort to stem the country’s increasing epidemic of

The U. S. government is asking Americans to eat less and exercise more in an effort to stem the country’s increasing epidemic of

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问题     The U. S. government is asking Americans to eat less and exercise more in an effort to stem the country’s increasing epidemic of obesity. It has issued revised dietary recommendations that emphasize proper nutrition, more physical activity, and personal initiative in maintaining a healthy weight.
    U. S. law requires the government to revise its dietary guidelines every five years to keep up with the latest scientific research. Agriculture Secretary Ann Veneman, whose agency is responsible for promoting healthy nutrition, says this year’s update is an effort to reverse a situation where two-thirds of Americans are too heavy. The new dietary guidelines are part of the ongoing effort to help Americans adopt and keep healthier lifestyles and to address the epidemic of overweight and obesity that is affecting so many, especially our nation’s children.
    Secretary Veneman acknowledges that the food recommendations have not changed much over the years. They still call for diets rich in a variety of vegetables, fruits, and whole grains, and limits on fatty foods and salt. This year, however, they place stronger emphasis on the importance of balancing energy intake and output, calling on people to cut their calorie consumption and exercise more. The guidelines urge adults to exercise at least moderately for no less than 30 minutes a day and children, 60 minutes daily.
    The U. S. agriculture official acknowledges that past government efforts to promote a healthy diet have failed, although she notes that the public recognizes the importance of weight control as shown by the strength of the multi-billion dollar diet industry. Clearly people are reaching out for information. Have we been successful in the past? I mean certainly we’ve had dietary guidelines and yet we still see increasing overweight and obesity in this country.
    There’s not going to be a pill! So let’s face it, America. There is more information out there, but it always comes back to:Eat your fruits and vegetables, watch your calorie intake, and exercise. That’s as simple as it can be! Mr. Thompson says U. S. food manufacturers are responding to the need for healthier diets, especially for children. Many have reduced the amount of sugar in children’s breakfast cereals and are promoting the whole grain and vitamin content of other foods. And as the government issued its new dietary guidelines, one of the largest U. S. food companies, Kraft, announced that it will restrict advertising of snack foods to children 12 and under and market its healthier products to this age group.  
This year’s guidelines put more emphasis on the importance of______.
选项
答案balacing energy intake and output
解析 根据题干关键词This year，emphasis on定位到原文第三段第三句：This year，however，they place stronger emphasis on the importance of balancing energy intake and output，calling on people…今年饮食指导建议更强调能量摄取与释放的平衡，呼吁人们减少热量的吸收并做更多运动。
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