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[讨论]OG 11-#117

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楼主
发表于 2008-9-2 11:49:00 | 只看该作者

[讨论]OG 11-#117

The one about Caterpillars...

I understand C, but Why B is not right? If many of the agricultural pests do not go through a caterpillar stage, then using enzyme can not kill them, and thus it will be not advisable either. Isn't it?

Thanks for all NN!!
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