例:剑8T4P2—P95 Q17 Biological control of pestsQ17 By the mid-1960s, cotton farmers in Central America found that pesticides A were wiping out 50% ...【详情】【我要提问】
例:剑8T4P2—P95 Q14 Biological control of pests Q14 The use of pesticides has contributed to A a change in the way ecologies are classified by agroecologists. B...【详情】【我要提问】