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导语：以下英语网为大家整理了全面的职称英语考试历年真题及答案解析，《职称英语考试试题汇总：历年真题及答案解析》供大家参考学习。更多职称英语考试试题敬请关注英语网！ 【推荐】关注英语网微信：yingyuwang2013，更快获取真题答案及成绩查询信息。 第6部分：完形填空（第51～55题，每题1分，共15分） 下面的短文有15处空白，请根据短文内容为每处空白确定一个最佳选项。 Taking a Nap during the Day Medical experts say most Americans do not get enough sleep. They say more Americans need to （51） for a short period in the middle of the day. They are advising people to sleep lightly （52） continuing with other activities. One study earlier this year found that persons who sleep for a few minutes during the day were less likely to die of （53） disease. The study followed more than 2，300 Greek adults （54） about six years. Adults who rested for half an hour at least three times a week had a 37 percent lower （55） of dying from heart disease than those who did not nap. Study organizers said the strongest （56） was in working men. They said | 
