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  3. Not only do women live longer than men, on average, but a new study from the Mayo Clinic suggests they also may keep their cogni

Not only do women live longer than men, on average, but a new study from the Mayo Clinic suggests they also may keep their cogni

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问题     Not only do women live longer than men, on average, but a new study from the Mayo Clinic suggests they also may keep their cognitive【B1】______longer, too. In a study of more than 2,000 adults 70 to 89 years old, researchers found that men were 1.5 times more likely to【B2】______mild cognitive decline than their female counterparts.
    Researchers tested【B3】______men and women in Olmstead County, Minn., for【B4】______of mild cognitive impairment(MCI), a condition in which people【B5】______memory or thinking beyond the decline seen because of【B6】______aging. MCI can be a precursor to Alzheimer’s disease or other forms of dementia(痴呆). Because some, but not all, patients with MCI go on to develop Alzheimer’s,【B7】______how MCI develops and how it affects the population【B8】______early detection of dementia and Alzheimer’s, specifically says the lead author on the study, Dr. Ronald Petersen of the Mayo Clinic in Rochester, Minn. Although past research shows that women are【B9】______suffer from Alzheimer’s in their lifetime, researchers found that there were【B10】______more men experiencing the early stages of cognitive decline: 19 percent of men had MCI whereas only 14 percent of women did.
【B4】
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解析 空前的介词for及空后的介词of表明，本空应填一名词。sign意为“标志”。
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