题目

阅读理解 I was born in Fiji and I know firsthandwhat it is like having an extremely poor background. My only luckwas having an opportunity to go to school, and I loved it so much. Even when Iwas sick, I never missed a day. I often compared with my friends who lived nearthe school to see who could be the first to arrive. It so happened that I livedthe furthest, but I always won. I'll never forget the days whenI waited by the school gate for my mother to bring me the $5 schooladministration fee I needed for each school term. I watched the road for thebus and with each bus that went by withou回答下列有关的问题。（1）用样方法调查某种植物的种群密度时，为避免调查者主观因素的影响，关键要做到____________。（2）在草原生态系统中，由生产者（绿色植物）流入分解者的能量除包含残枝落叶中的能量外，还包含_______________ 中的能量。（3）管理人员连年使用同种化学杀虫剂杀灭害虫，结果导致害虫再度大爆发。请从两个不同的角度分析害虫再度爆发的原因：①_______________________________________________________________________；②________________________________________________________________________。