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紧急求助两道GWD逻辑

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发表于 2007-10-6 13:39:00 | 只看该作者

紧急求助两道GWD逻辑

Q32:

A major chemical spill occurred five years ago at Baker’s Beach, the world’s sole nesting ground for Merrick sea turtles, and prevented nearly all the eggs laid that year from hatching.  Yet the number of adult female Merricks returning to lay their eggs at Baker’s Beach has actually increased somewhat since five years ago.  Clearly, environmentalists’ prediction that the world’s Merrick population would decline as a result of the spill has proven unfounded.

 

Which of the following, if true, most seriously undermines the argument offered in refutation of the environmentalists’ prediction?

 

  1. The chemical spill five years ago occurred at a time when there were neither Merrick sea turtles nor Merrick sea turtle eggs on Baker’s Beach.

  2. Female Merrick sea turtles begin returning to Baker’s Beach to lay their eggs when they are ten years old.

  3. Under normal conditions, only a small proportion of hatchling female Merrick sea turtles survive in the ocean until adulthood and return to lay their eggs at Baker’s Beach.

  4. Environmental pressures unrelated to the chemical spill have caused a significant decline in the population of one of the several species of sea birds that prey on Merrick sea turtle eggs.

  5. After the chemical spill, an environmental group rejected a proposal to increase the Merrick sea turtle population by transferring eggs from Baker’s Beach to nearby beaches that had not been affected by the spill.

答案是B,为什么呢。。。

Q14:

Background information:  This year, each film submitted to the Barbizon Film Festival was submitted in one of ten categories.  For each category, there was a panel that decided which submitted films to accept.

 

Fact 1:  Within each category, the rate of acceptance for domestic films was the same as that for foreign films.

 

Fact 2:  The overall rate of acceptance of domestic films was significantly higher than that of foreign films.

 

In light of the background information, which of the following, if true, can account for fact 1 and fact 2 both being true of the submissions to this year’s Barbizon Film Festival?

 

  1. In each category, the selection panel was composed of filmmakers, and some selection panels included no foreign filmmakers.
  2. Significantly more domestic films than foreign films were submitted to the festival.
  3. In each of the past three years, the overall acceptance rate was higher for foreign than for domestic films, an outcome that had upset some domestic filmmakers.
  4. The number of films to be selected in each category was predetermined, but in no category was it required that the acceptance rate of foreign films should equal that of domestic films.
  5. Most foreign films, unlike most domestic films, were submitted in categories with high prestige, but with correspondingly low rates of acceptance.

答案是E,为什么呢

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