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  3. As if they needed any more excuse, new research suggests men need their sleep if they’re to live a long life. Women, on the othe

As if they needed any more excuse, new research suggests men need their sleep if they’re to live a long life. Women, on the othe

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问题     As if they needed any more excuse, new research suggests men need their sleep if they’re to live a long life. Women, on the other hand, can live long lives【C1】______poor sleep habits as long as they eat a diverse diet that includes vitamin B6 and plenty of vegetables. Vitamin B6 can be found in food such as meat, bananas and nuts.【C2】______other things, it allows the body to use and【C3】______energy from protein and carbohydrates.
    The findings come from a study led by Professor Mark Wahlqvist from Monash University which looked at how diet【C4】______sleep quality and mortality among elderly men and women. Professor Wahlqvist said sleep played a more【C5】______role in men’s mortality than women’s. "Poor sleep has been associated with increased disease rate and mortality. We found that for both【C6】______poor sleep was strongly【C7】______poor appetite and poor perceived health."
    But the researchers also found a【C8】______relationship between a diverse diet and sleep,【C9】______in women. "For women, good sleep only ensures a survival advantage【C10】______they had a diverse diet," said Professor Walhqvist. The study found women were almost twice as likely as men to sleep【C11】______Women who were poor sleepers had a lower intake of vitamin B6 from food than those whose sleep was【C12】______"fair" or "good". Fair sleepers had lower iron intakes than good sleepers.
    Both men and women could improve their【C13】______by eating a more【C14】______diet, the research said "Sufficient dietary diversity in men could【C15】______the adverse effect on mortality of poor sleep【C16】______women need to make sure they are eating foods high in vitamin B6," said Professor Walhqvist.
    Participants in the study who did not sleep well were also less able to chew, had poor appetites, and did less physical activity. "These characteristics could lead to lower overall dietary quality and food and nutrition intake, especially for vegetables, protein-rich foods, and vitamin B6. They may also result in the【C17】______of death. Intervention【C18】______on education on healthy dietary【C19】______in elderly people could improve sleep duration and【C20】______more stable levels of health."
【C10】
选项 A、whether
B、though
C、if
D、because
答案C
解析 文章开头提到女性长寿的条件是饮食多样化，而本句提到对于女性而言良好的睡眠只是保障生存优势而已(survival advantage)，说明对于女性来说，良好的睡眠作用在饮食多样化的条件下并不凸显。C项if表示条件，符合语义逻辑。
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