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[求助]gwd24-7

GWD-24-7

Which of the following most logically completes the argument below?

The expansion of large-scale farming in Africa and Asia has destroyed much of the natural vegetation on which elephants have historically depended, forcing them to turn to cultivated land to satisfy their enormous appetites. As a result, farmers have lost millions of dollars worth of crops annually. Yet even if elephant sanctuaries were created on a widespread basis to guarantee elephants sufficient natural vegetation, the raiding would likely persist, since            

  1. when elephants forage for food, they typically travel in herds.
  2. Foraging elephants have been known to cause substantial damage even to plants that they do not eat.
  3. Some of the land where crops have suffered extensive damage from elephants has been allowed to return to its natural state.
  4. Elephants tend to prefer cultivated crops to wild vegetation as a food source.
  5. Elephant sanctuaries are usually created in areas that are rich in the natural vegetation on which elephants have historically depended.
  答案是D  我有点不明白为什么B错? 答案的解释上说B的范围太大, 请问具体是什么意思? 我觉得答案D有点奇怪, 大象明明是FORCED吃CULTIVATED的食物   D又说大象更喜欢Cultivated的食物,虽然D确实也有解释作用,但是觉得有些牵强. 请大家指教
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条件:大象救助所提供食物 结论:大象不再袭击庄稼.现要削弱说大象偏爱庄稼比起野生植物.说明即使有救助所提供basis大象还是会攻击农田因为其爱吃庄稼.给出他因削弱.B无关选项

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谢谢  但是我还是不太懂为什么B不相关呢? 大象会DAMAGE它不吃的植物  那也就是说即使退更还林   大象不吃庄稼了  但它还是会破坏庄稼  这样不也能解释文章的结论“ even if elephant sanctuaries were created on a widespread basis to guarantee elephants sufficient natural vegetation, the raiding would likely persist”吗?

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