91. Leachate is a solution, frequently highly contaminated, that develops when water permeates a landifill’s site. If and only if the landfill’s capacity to hold liquids is exceeded does the leachate escape into the environment, generally in unpredictable queantities. A method must be found for disposing of leachate. Most landfill leachate is sent directly to sewage treatment plants, but not all sewage plants are capable of handling the highly contaminated water. Which one of the following can be inferred from the passage? (A) The ability to predict the volume of escaping landfill leachate would help solve the disposal problem. (B) If any water permeates a landfill, leachate will escape into the environment. (C) No sewage treatment plants are capable of handling leachate. (D) Some landfill leachate is sent to sewage treatment plants that are incapable of handling it. (E) If leachate does not escape from a landfill into the environment, then the landfill’s capacity to hold liquids has not been exceeded. the key is E, why D is wrong
94. When 100 people who have not used cocaine are tested for cocaine use, on average only 5 will test positive. By contrast, of every 100 people who have used cocaine 99 will test positive. Thus, when a randomly chosen group of people is tested for cocaine use, the vast people is tested for cocaine use, the vast majority of those who test positive will be people who have used cocaine. A reasoning error in the argument is that the argument (A) attempts to infer a value judgement from purely factual premises (B) attributes to every member of the population the properties of the average member of the population (C) fails to take into account what proportion of the population have used cocaine (D) ignores the fact that some cocaine users do not test positive (E) advocates testing people for cocaine use when there is no reason to suspect that they have used cocaine key is c, why B is wrong Thanks a lot
99. Concetta: Franchot was a great writer because she was ahead of her time in understanding that industrialization was taking an unconscionable toll on the family structure of the working class. Alicia: Franchot was not a great writer. The mark of a great writer is the ability to move people with the power of the written word, not the ability to be among the first to grasp a social issue. Besides, the social consequences of industrialization were widely understood in Franchot’s day. In her disagreement with Concetta, Alicia does which one of the following? (A) accepts Concetta’s criterion and then adds evidence to Concetta’s case (B) discredits Concetta’s evidence and then generalizes from new evidence (C) rejects Concetta’s criterion and then disputes a specific claim (D) disputes Concetta’s conclusion and then presents facts in support of an alternative creterion (E) attacks one of Concetta’s claims and then criticizes the structure of her argument
91.Most landfill leachate is sent directly to sewage treatment plants, but not all sewage plants are capable of handling the highly contaminated water.原文说大多数的leachate被送到treatment plants,但不是所有的plants都能处理高感染的water.
D) Some landfill leachate is sent to sewage treatment plants that are incapable of handling it. 一些leachate被送到了不具备处理能力的treatment plants
以下是引用番茄炒蛋在2004-2-18 13:22:00的发言： 第一题就是 If and only if the landfill’s capacity to hold liquids is exceeded does the leachate escape into the environment 的逆反命题
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发表于 2004-2-16 22:24:00
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