10. Almost all of the books published in the past 150 years were printed on acidic paper. Unfortunately, every kind of acidic paper gradually destroys itself due to its very acidity. This process of deterioration can be slowed if the books are stored in a cool, dry environment. Techniques, which are now being developed, to deacidify books will probably be applied only to books with historical significance.
If all of the statements in the passage above are true, which one of the following must also be true!
(A) If a book was published in the past 50 years and is historically insignificant, it will probably deteriorate completely.
(B) Almost all of the books published in the past 150 years will gradually destroy themselves.
(C) Almost all of the books that gradually deteriorate are made of acidic paper.
(D) If a book is of historical significance and was printed before 150 years ago, it will be deacidified.
(E) Books published on acidic paper in 1900 should now all be at about the same state of deterioration.
answer:A
请问D选项如果在will后加一个probably，也是一个正确答案呢？作者: linsonstudy 时间: 2003-9-20 15:16
如果D加各probably也可以正确，因为原陈述并无否定150 years ago 不是 deacidic 的。
没有否定就是probably
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