GR红皮书 EXERCISE31 第六题 求高手解答下 谢谢

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One of the first__of reduced burning in Amazon rain forests was the chestnut industry: smoke tends to drive out the insect that, by pollinating chestnut tree, allow chestnuts to develop.
A reformer  B discoveries C casualities D critics E beneficiaries   选E为什么  
个人感觉 应该选C 啊

max123UID: 3549468

One of the first__of reduced burning in Amazon rain forests was the chestnut industry: smoke tends to drive out the insect that, by pollinating chestnut tree, allow chestnuts to develop.
A reformer  B discoveries C casualities D critics E beneficiaries   选E为什么  
个人感觉 应该选C 啊

hj1313UID: 3476105

减少burning→减少对昆虫有害的smoke→增加有益的可以pollinate chestnut的昆虫→增加chestnut产量。
所以chestnut industry是一个受益者。

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hj1313 发表于 2014-8-4 15:08
减少burning→减少对昆虫有害的smoke→增加有益的可以pollinate chestnut的昆虫→增加chestnut产量。
所以 ...

明白了  谢谢你