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 with age. That is the same for the brainy and the dim—and not 【C2】______for humans: it is measurable even for fruit flies.【C3】______minds that keep lively will suffer less than the lazy. In general, the more education you have, the more productive your old【C4】______will be.
   Some【C5】______decline faster than others. According to most studies, people’ s numerical and reasoning abilities are at their best in their 20 s and early 30 s.【C6】______abilities—those that depend on knowledge—may improve with age.
   For most workers, decreased abilities will【C7】______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【C8】______.
   Academics notice this. It is less clear that employers do. Studies of supervisors-ratings show no clear correlation【C9】______age and perceived productivity. When other employees-views are【C10】______into account though, the picture changes: these ratings suggest that workers in their 30s are the【C11】______productive and hardworking, with scores falling thereafter.
   That is【C12】______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【C13】______declining. It varied by industry: the fall was slower in footwear, but faster in furniture.
   Intellectual occupations are harder to measure, but the picture is the same. Academics seem to publish【C14】______ as they age. Painters, musicians and writers show the same tendency. Their output peaks in their 30s and 40s. The only【C15】______is female writers, who are most productive in their 50 s.
【C12】
选项
答案backed
解析 该句句意为“对工作样本的研究发现老员工生产率低。这一研究支持了…”。该空相对较难。back up是短语，意为“支持”。
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