2. 外语
  3. One of the best pieces of medical news to emerge over the last several years is that chocolate may【C1】______you live longer, pro

One of the best pieces of medical news to emerge over the last several years is that chocolate may【C1】______you live longer, pro

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问题     One of the best pieces of medical news to emerge over the last several years is that chocolate may【C1】______you live longer, probably through a【C2】______in heart attack.
    Chocolate’ s【C3】______status as a heart-healthy food was launched in the 1990s by Harvard Medical School researchers【C4】______the Kuna Indians, living off the coast of Panama. The researchers 【C5】______their attention on the Kunas’ regular consumption of cocoa—up to 5 cups a day—for clues about the【C6】______of this largely unprocessed food.
    Of all the things to love about chocolate, research【C7】______in 2012 in the journal Archives of Internal Medicine suggests that eating it regularly may【C8】______help you stay slim! The University of California study found that subjects【C9】______ate chocolate more frequently had a【C10】______Body Mass Index (BMI), 【C11】______when they consumed more calories overall. A BMI between 18-25 is considered healthiest【C12】______adults.
    A 2011 review of seven major studies【C13】______about 114,000 people also found a link between【C14】______of chocolate consumption and health. Eating chocolate and cocoa products more than twice a week【C15】______big drops in the risks of heart disease.
    Chocolate’ s【C16】______in an anti-aging diet may seem like news, 【C17】______the truth is, cocoa has been used【C18】______medicine in many cultures for thousands of years. In the mid-1600s Spanish explorers【C19】______it back home to Europe after they discovered it in the New World. 【C20】______the centuries, cocoa and chocolate have been credited with improving ailments (小病)ranging from digestion to toothaches and insomnia.
【C17】
选项 A、so
B、for
C、but
D、and
答案C
解析 这是一道语法题，考点是连词在上下文中的意思和用法。该句的前后两部分是转折的关系，因此应该用but。
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