Adopting the method of knowing your author,teachers can encourage students to think beyond the immediate concerns of the book.
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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.
平均指标的意义与作用以及应用平均指标需注意的问题。