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Watching more than three hours of TV before age 3 has bad effect on kids.

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Nowadays，most of book children read are those they need to read for school．

Adopting the method of knowing your author,teachers can encourage students to think beyond the immediate concerns of the book．

The enrollment of international students will have a positive impact on America rather than threaten its competitiveness.

Since the mid-1970s, the enrollment of overseas students has increased at an annual rate of 3.9 percent.