2. 外语
  3. Pay and productivity, it is generally assumed, should be related. But the relationship seems to weaken【C1】______people get older

Pay and productivity, it is generally assumed, should be related. But the relationship seems to weaken【C1】______people get older

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问题     Pay and productivity, it is generally assumed, should be related. But the relationship seems to weaken【C1】______people get older.
    Mental ability declines【C2】______age. That is the same for the brainy and the dim—and not【C3】______for humans: it is measurable even【C4】______fruit flies.【C5】______ minds that keep lively will suffer less than the lazy. In general, the more education you have, the more productive your old【C6】______will be.
    Some【C7】______decline faster than others. According to most studies, people’s numerical and reasoning abilities are【C8】______their best in their 20s and early 30s.【C9】______ abilities—those that depend on knowledge—may improve with age.
    For most workers, decreased abilities will【C10】______to lower productivity: only a minority will find know-how and knowledge outweighs their failing powers. Even those employees who remain highly productive will be likely to shine only in a narrow【C11】______.
    Academics notice this. It is less clear that employers do. Studies of supervisors’ ratings show no clear correlation【C12】______age and perceived productivity. When other employees’ views are【C13】______into account though, the picture changes: these ratings suggest that workers in their 30s are the【C14】______productive and hardworking, 【C15】______scores falling thereafter.
    That is【C16】______up by studies of work samples, which find lower productivity among the oldest employees. A study for America’s Department of Labor showed job performance peaking at 35, and【C17】______declining. It varied by industry: the fall was【C18】______in footwear, but faster in furniture.
    Intellectual occupations are harder to measure, but the picture is the same. Academics seem to publish【C19】______ as they age. Painters, musicians and writers show the same tendency. Their output peaks in their 30s and 40s. The only【C20】______is female writers, who are most productive in their 50 s.
【C8】
选项
答案at
解析 句意为：“人的数学和推理能力在二三十岁左右表现最好”。at one’s best time为固定搭配。表示在做某事的最佳时期。
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