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

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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.
【B11】

选项

答案a reduced risk of dying from IHD of around four percent for each additional portion of fruit and vegetable consumed above the lowest category

解析 a reduced risk, dying, IHD, four percent, additional, consumed, lowest category
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