题目内容
Studies _______ that children who often take part in cooperative programs benefit a lot more than other children.
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The conversations were designed to _______ her authority so she felt that she could no longer work for the company.
E-books now account for 14 percent of all book sales in the country and are increasing far faster than _______ book sales.
If they _______ more power than the home is using, the excess flows into the utility's power grid (电网).
Until the second quarter of this year, the company had been showing _______ growth.
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