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研究人员在报告中推测,在接受过较多教育的人的大脑中,某些比脑皮层更深层次的结构可能完好无损,从而弥补脑皮层萎缩带来的损失......

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众所周知,大脑随着年龄的增长而萎缩,但是这对智力方面的影响却因人而异。[结构分析] 句子框架是It is known that the brain shrinks as the body ages,but the effects…are different from person to person。这是由but连接的两个并列句,意思转折,前一句是个主语从句,it是形式主语,that引导的从句是真正的主语,it is known翻译为“众所周知”。
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CountriesGNP per head(1982:US dollars)Daily caloriesupply perheadLife expectancyat birth(years)Infant mortalityrates (per 1000live births)BangladeshBoliviaEgyptIndonesiaUSA1405706905801316018772086295022963652 4050564974132124978712 Selected statistics showing aspects of the quality of life in 5 countries
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