18. Professor Hartley's new book on moral philosophy contains numerous passages that can be found verbatim in an earlier published work by Hartley's colleague, Professor Lawrence. Therefore in view of the fact that these passages were unattributed in Hartley's book. Hartley has been dishonest in not acknowledging the intellectual debt owed to Lawrence.
Which one of the following is an assumption on which the argument is based?
(A) Hartley could not have written the new book without the passages in question.
(B) While writing the new book, Hartley had access to the manuscript of Lawrence s book.
(C) A book on moral philosophy should contain only material representing the author's own convictions.
(D) Lawrence did not get the ideas in the passages in Question or did not get their formulations originally from Hartley.
(E) Hartley considered the passages in question to be the best possible expressions of the ideas they contain.
所有的assumption都可以取非而对推理进行最大的减弱。 18)对D取非。如果Lawrence 是从Hartley得到 ideas or formulations originally,如何可以断 定Hartley是不诚实?!在LSAT中should和绝对的判断不是assumption(我只是说一般,pay more attention to 'only,must....')。