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短文改错 many study show that smiling is good for our health .是再那张英语试卷出现的
人气：112 ℃ 时间：2019-09-22 07:13:17
解答
把study改成studies.
study在这儿是名词,是研究的意思.
许多研究表明,微笑有利于我们的健康.
要用复数.
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