标题: LSAT SET 23 SECTION IV，11，23 [打印本页] 作者: braveMBA 时间: 2003-9-4 23:05 标题: LSAT SET 23 SECTION IV，11，23 11. Five thousand of the 50,000 books published in country Z in 1991 were novels. Exactly 25 of the films released in country Z in 1992 were based on books published in country Z in 1991. Which one of the following, if assumed, allows the conclusion above to be properly drawn? (A) None of the scripts used in films released in 1992 were written by professional novelists. (B) None of the films released in country Z in 1992 were based on books other than novels. (C) None of the books that were published in country Z in 1992 were based on plots of films released in 1991. (D) Some of the films released in country Z in 1992 were based on older films that had been released for the first time many years earlier. (E) Some of the films released in 1991 in country Z were based on novels that were published in 1991.
KEY：B。WHY？我选了E，怪怪的感觉。
23. Construction contractors working on the cutting edge of technology nearly always work on a “cost-plus” basis only. One kind of cost-plus contract stipulates the contractor’s profit as a fixed percentage of the contractor’s costs; the other kind stipulates a fixed amount of profit over and above costs. Under the first kind of contract, higher costs yield higher profits for the contractor, so this is where on might expect final costs in excess of original cost estimates to be more common. Paradoxically, such cost overruns are actually more common if the contract is of the fixed-profit kind. Which one of the following, if true, most helps to resolve the apparent paradox in the situation described above? (A) Clients are much less likely to agree to a fixed-profit type of cost-plus contract when it is understood that under certain conditions the project will be scuttled than they are when there is no such understanding. (B) On long-term contracts, cost projections take future inflation into account, but since the figures used are provided by the government, they are usually underestimates. (C) On any sizable construction project, the contractor bills the client monthly or quarterly, so any tendency for original cost estimates to be exceeded can be detected early. (D) Clients billed under a cost-plus contract are free to review individual billings in order to uncover wasteful expenditures, but they do so only when the contractor’s profit varies with cost. (E) The practice of submitting deliberately exaggerated cost estimates is most common in the case of fixed-profit contracts, because it makes the profit, as a percentage of estimated cost, appear modest.
KEY：D. 题目也看懂了，但是对D没有感觉，为什么？作者: braveMBA 时间: 2003-9-5 07:11
UP，NN们作者: mindfree 时间: 2003-9-5 10:11
The first one is not complete to me. There is no conclusion in the passage.
Second one, did you really understand the question and choice?
Two approaches: 1. fixed percentage: $1000 cost yields $200 profit and $100000 yields $20000 if 20% 2. fixed profit: $200 profit, no matter the cost is $1000 or $1 million.
So common sense tells us that contractors will be more likely run over costs in fixed percentage to earn bigger prodit, while in reality, it is not as common.
D explains that clients (who are charged with the cost and profit) will examine the cost carefullyto avoid being overcharged when the cost run over estimates.作者: braveMBA 时间: 2003-9-5 11:53
1、The subject is like that, so maybe it is a incomplete passage.