题目

Tim Becker and his neighbors are doing something to make their neighborhood a trouble-free area.When Tim Becker gets in his car to go shopping, he doesn’t   36  drive to a store and back home. He always looks  37  up and down the streets of his neighborhood. He looks for anything  38   such as strange cars, loud noises,  39  windows , or people gathering on street corners.Tim   40   to a neighborhood watch group in Stoneville Indiana, USA. The neighborhood watch group  41  on the third Wednesday of every month. That’s   42  Tim gets together with about ten of his neighbo（10分）【自然灾害与防治】2013年7月，东北地区出现大范围、长时间的强降水过程，一度出现24小时内超400毫米的强降雨，较常年同期偏多43.3%。至7月19日，嫩江、松花江流域111个县（区、市）373.7万人受灾。同期我国江淮地区则受副热带高压控制，出现了多年罕见的大范围持续高温天气。请分析形成此次东北暴雨洪涝的自然原因。