改错 People say that the world's populations may be seven billion by the year 2010.say划线 the world's 划线population划线by the划线

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改错 People say that the world's populations may be seven billion by the year 2010.
say划线 the world's 划线population划线by the划线

populations 改为population
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你好,本题中的错误时population,因为这一单词通常作为单数解,不加s