题目

（2010·江苏大丰高级中学高三第一次质量检测）    34. If they _______ what I was saying, they'd know what I was talking about. A. took the trouble to listen to               B. had trouble listening to C. take the trouble to listen to                D. have trouble listening to 答案：A属于工程性防洪措施的是 [     ]A．实行防洪保险B．建立洪水预报预警系统C．修建分洪区D．加强分洪区土地管理