GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - 2V6CFN757T7E0M3TJ

The passage is primarily concerned with A. outlining the assumptions underlying an incorrect theory about the evolution of pests B. discussing the use of bacteria to control certain kinds of agricultural pests C. countering a claim regarding the nature of a seemingly intractable pest control problem D. evaluating some innovative proposals for overcoming pest control problems E. explaining why farmers have been unable to overcome a continuing pest control problem