OG 11 紫皮63 Certain pesticides can become ineffective if used repeatedly in the same place; one reason is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soil that are free of such chemicals.
E) The finding of much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soil that are free of such chemicals suggests one reason certain pesticides can become ineffective if used repeatedly in the same place.
解释说E distorted into that of the discovery，可是不大理解怎么distorted了。。。。。。。
还有就是require of sb that 和require sb to do的区别。。。都是用在什么情况下面的
