请教一道题·····但不知是哪里的。。。

rx_11

14. Among the more effective kinds of publicity thatpublishers can get for a new book is to have excerptsof it published in a high-circulation magazine soonbefore the book is published. The benefits of suchexcerption include not only a sure increase in salesbut also a fee paid by the magazine to the book's publisher.Which of the following conclusions is best supportedby the information above?

(A) The number of people for whom seeing anexcerpt of a book in a magazine provides anadequate substitute for reading the wholebook is smaller than the number for whomthe excerpt stimulates a desire to read the book.

(B) Because the financial advantage of excerpting anew book in a magazine usually accrues tothe book's publisher, magazine editors areunwilling to publish excerpts from new books.
(C) In calculating the total number of copies that a book   has sold, publishers include sales of copies of   magazines that featured an excerpt of the book.
(D) The effectiveness of having excerpts of a bookpublished in a magazine, measured in termsof increased sales of a book, is proportionalto the circulation of the magazine in whichthe excerpts are published.
(E) Books that are suitable for excerpting in high-circulation magazines sell more copies thanbooks that are not suitable for excerpting.
正确答案A。

各位求教一下···我不是逻辑上有问题，而是阅读上有困难····就拿正确答案A来说，它表达的是“读完摘录的人中, 更想买此书的人数要大于看了摘录就不想买此书的人”。给我翻译以后我就可以选对。但是它这么写：provides an adequate substitute for reading the whole book is smaller than 。。。我就看不懂了。。Provides an adequate substitute,为什么就表示不看这种书呢。。？请问大家是怎么读懂的。。？我阅读其实也不差，但是有时在关键时候遇到一些障碍就没办法。。。请问大家是怎么解决这个问题的？

prayer

The number of people for whom seeing an excerpt of a book in a magazine provides an adequate substitute for reading the whole book

前面是看excerpt，后面是看全文，中间是表示前面可以代替后面，那意思不就是只看excerpt不看全文的么？