2. 外语
  3. U.S. rates of disease and some cancers,【B1】______of the breast, are among the highest in the world. Many factors【B2】______to can

U.S. rates of disease and some cancers,【B1】______of the breast, are among the highest in the world. Many factors【B2】______to can

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问题     U.S. rates of disease and some cancers,【B1】______of the breast, are among the highest in the world. Many factors【B2】______to cancer and heart disease, including an individual’s genetic【B3】______. But when scientists【B4】______the course of diseases across the globe, the role of【B5】______stands out sharply. Japan offers an example.  The【B6】______Japanese diet is the direct【B7】______of ours: typically  they eat rice, vegetables and a little fish, while Americans put a big portion of meat in the center  of the plate and add a few French fries.【B8】______only about a quarter as much fat as we do, and far more carbohydrates, the Japanese live longer than anybody else in the world. That is, until they move to the United States.【B9】______says Dr. Peter Greenwald, director of the Division of Cancer Prevention and Control at the U.S. National    Cancer  Institute.    "When  they  move  to  Hawaii,  the  rate  goes  up."【B10】______. Similar patterns are emerging all over the globe. "I’ve been in Mauritius, Cuba and Hungary, three completely different countries, advising their governments  on nutrition education," says Marion Nestle, professor of nutrition at New York University.【B11】______.
【B4】
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答案trace
解析 动词，表示“追溯”在这里表示追溯疾病的形成。
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