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60 mAturE womEn

B 分数或百分数、half作主语,后跟of短语时,谓语动词的单复数就是由of引导的名词来决定的,所以这里第一个分句中,of引导的名词为复数,谓语动词用复数形式,第二个分句中of引导的名词被省略,因为和第一个分句相同,所以把它省略掉,省略掉后...

Exercise the Body to Keep the Brain Healthy, Study Suggests Oct. 22, 2012 — People who exercise later in life may better protect their brain from age-related changes than those who do not, a study suggests. Researchers found th...

同行哈,很专业、很困难,想做个啥东东,说来听听…

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