再问:E中than后补全应是什么样? i think in e,than that(the finding of much larger populations ) in those(soils)that are free of such chemicals suggests one reason(pay attention to here,for that is needed here)that ,,,,,, besides,i think than there are populations of pesticide-degrading microbes that free of such chemicals in soils should be than there are populations of pesticide-degrading microbes in soils that are free of such chemicals rather than vice verse |