讲义268，296

晓驰

268．Rabbits were introduced to laceName>NumalaceName> laceType>IslandlaceType> in the nineteenth century. Overgrazing by the enormous population of rabbits now menaces the island’s agriculture. The government proposes to reduce the population by using a virus that has caused devastating epidemics in rabbit populations elsewhere. There is, however, a chance that the virus will infect the bilby, an endangered native marsupial. The government’s plan, therefore, may severe the interests of agriculture but will clearly increases the threat to native wildlife.

Which of the following, if true, most seriously weakens the argument?

A.      Overgrazing by rabbits endangers many of the plants in which bilbies feed.

B.      There is no alternative means of reducing the rabbit population that would involve no threat to the bilby.

答案是A   rabbits导致bilbies饿死，而virus导致rabbits和bilbies通通死掉 我觉得削弱的不是很强

把B里的no去掉不就是加强结论吗 severe the interests of agriculture but will clearly increases the threat to native wildlife

296．A manufacturer of workstations for computer-aided design seeks to increase sales to its most important corporate customers. Its strategy is to publish very low list prices for workstations in order to generate interest among buyers for those corporations.

Which of the following, if characteristic of the marketplace, would tend to cause the manufacture’s strategy to fail?

A.      The proposed list prices would seem low to a typical buyer for the manufacture’s most important corporate customers.

B.      Buyers for corporations that purchase workstations for computer-aided design receive bonuses for negotiating large discounts from the list price.

答案是B  A为什么错呢？是因为A不是 characteristic of the marketplace吗？怎么看出来呢？那个a typical buyer可不可以代表大多数呢，那么会不会觉得价格低 不买呢？

B也没说manufacturer没有利润啊 请指点谢谢

lawyer_1

请贴全答案

lugubrious

268 如果有A得话,说明这种兔子对那种袋鼠得食物有影响.

那么如果用那种Virus,它可以有两方面得作用1对那种袋鼠有伤害,2减少了兔子对袋鼠食物得影响.

这样一个正面因素,一个反面因素.所以你不能说clearly increases .....

296 如果buyer能得到奖金得话,他才愿意多卖产品,但是现在得价钱已经低了,就不可能在有large

discount.所以使计划失败.如果有B条件得话,应该是提高价格.这样才能可以有商量打折得余地,

这样buyer就有赚头,这样才会多买东西.对吧.

晓驰

296.“但是现在得价钱已经低了,就不可能在有large

discount.所以使计划失败.”这是你推测的吧？有道理但是A为什么不对？

lugubrious

A什么结论都得不出来。A只是说一个Buyer，觉得价钱低啊。你能从这个得出什么结论？

晓驰

seem low to sb.他们不买啊

lugubrious

价钱低，要买，所以计划可行啊。问题问的是哪个使计划泡汤啊。

晓驰

我原先的理解是A他们觉得价格低就不买拉（可能是某种心理因素作用）B促销手段不一定没有利润 。虽然这样想有背常理。