OG3 阅读 Q45

Choice D is the best answer. The authors explain that when beekeepers use commercially produced insecticides to fight mite infections, they may "further weaken" bees that are "immunocompromised or nutritionally defi-cient" (lines 31-35"In...proper").Choices A, B, and C are incorrect because the authors do not suggest that beekeepers' use of commercially produced insecticides increases mite popu-lations, kills bacteria, or destroys bees' primary food source.