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  3. For years the advice has been clear: Eating five portions a day of fruit and vegetables is the key to a healthy life. But five m

For years the advice has been clear: Eating five portions a day of fruit and vegetables is the key to a healthy life. But five m

admin2012-04-09  11
问题     For years the advice has been clear: Eating five portions a day of fruit and vegetables is the key to a healthy life. But five may no longer be enough. A study has found that to get【B1】______defense against heart disease, you need to eat at least eight daily【B2】______ of fresh food. The Government’s five-a-day advice has its【B3】______in World Health Organization guidelines to include 14 ounces of vegetables in a daily diet. But there have been doubts over whether eating more than this level of fruit and vegetable meant even greater health【B4】______. Now the new study suggests every extra portion provides added protection.
   【B5】______, those in the highest category—eating eight or more a day—have a 22【B6】______lower chance of dying from heart disease than those who【B7】______three portions, the UK average. A "portion"【B8】______just under three ounces, equal to a small banana, a medium apple or a small carrot.【B9】______
    Dr. Francesca Crowe of Oxford University is working on the project. She said that although ischaemic (缺血性的) heart disease(IHD)—the most common form—【B10】______.
    In spite of these things, the study specifically showed【B11】______, which was those who ate two or fewer portions.
【B3】
选项
答案roots
解析 语义推断题。空格前是its，因此空格处应填人名词。结合上下句意，根据世界卫生组织所倡导的每餐含有14盎司蔬菜的标准，英政府向国民建议，每日摄取的食物中应含有五份蔬果。因此空格处单词应具有“来源，根源，起因”的意思。结合录音，不难填入roots。
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