他发现他儿子周围都是书信和论文，并且看起来非常的担忧。

　　B

　　[2015·河北石家庄一模]Picking a university is a tense period of asking yourself which institution is most relevant.That's why university rankings play such a vital role in students searching for their next academic direction. Rankings are also an inescapable part of the reputation and brand image of universities. “No university website is complete without the claim to be in the top 100 for something or other，” reported the BBC. The reason is simple: rankings help them to attract students, staff and research investment.

　　Currently there are numbers of university rankings, and each has its own list of criteria. But the main categories are the same: academic reputations, graduates' performance and faculty resources.

　　However, experts point out the ranking process isn't entirely reliable. Mark Kantrowitz, a US financial aid researcher, said university rankings were mostly just for show. He wrote in The New York Times, “It may give your parents better bragging rights, but that's about it.”

　　Moreover, it's not difficult to see the limitations of university rankings. Many rankings focus on the number of times research work is cited (引用) by other researchers. It helps British and US universities to dominate global rankings because English is the favored language of academia, John O'Leary, a member of the QS Global Academic Advisory Board, told The Guardian.

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