题目内容
E-books now account for 14 percent of all book sales in the country and are increasing far faster than _______ book sales.
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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.
Indications are that a large number of students are at risk of _______ their school careers with their part-time jobs.
Unemployment has come down slightly, but this does not _______ the fact that it is still a major problem.
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