题目

Mr. Bean looks from the menu to all his money with until he finds something that he can afford. A.satisfaction              B.curiosity                  C.preference               D.concern 答案：D“白色污染”的主要危害是：（    ）①破坏土壤结构 ②降低土壤肥效 ③污染地下水④危及海洋生物的生存A．①②B．②③C．①②③④D．②④