---All the books are not useful.
---Which of the following has the same meaning as this sentence?A.All the books are usefulB.Neither of the books is usefulC.Not all the books are usefulD.None of the books are useful
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C解析考查部分否定。否定词not与all, both, each, every等连用，不管not的位置在前面还是在后面，都是部分倒装。使用All the books are not useful.=" Not" all the books are useful；意为：不是所有的书都有用。故C正确。
考点：考查部分否定
点评：否定词not与all, both, each, every等连用，不管not的位置在前面还是在后面，都是部分倒装。