题目内容

National libraries began to care about preserving the web when __________．
[A] Brewster Kahle urged them to do so
[B] some materials needed to be preserved
[C] the Internet Archive invited them to do it
[D] a project to preserve information is under way

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根据所听材料，回答 12～15 题
第 12 题 Because of the weight problem, schools have the pressure to__________．{Page}
[A] provide more healthy food
[B] ban food advertisements at schools
[C] arrange more physical education classes
[D] teach students to keep fit

Viewer's expectations of TV programs have changed due to
[A] the advancement of technology
[B] the richness of recreational activities
[C] the rapid spread of the Internet
[D] the large quantity of programs

As to the book The Power of Half, the author will probably __________．
[A] encourage his kids to read it
[B] ask his kids to keep away from it
[C] read it in detail and again and again [D] hide it away from his kids

根据文件来源，在一个机关内部可将公文分为（）。