房山区的降雨量达到了460毫米，是有历史记录以来的最高值。

The rainfall reached 460 millimeters in the district, the highest ever recorded, according to the government.

与此同时，同样住在房山区的李民英(音译)和她的家庭要幸运一些。

Meanwhile, Li Minying and her family, also in Fangshan district, were lucky.

目的为了解掌握房山区家蝇对常见杀虫剂的抗药性，为科学合理使用杀虫剂提供依据。

Objective To learn resistance of Musca domestica to insecticides in FangShan and to provide the basis information for using insecticides reasonably.

方法采用随机抽样的方法，对房山区9所中小学校食堂及366名在校就餐的学生进行膳食及营养教育相关情况的问卷调查。

Methods By random sampling method, 9 refectories and 366 students usually having their lunch at schools were drawn from Fangshan District, an anonymous questionnaire survey was conducted among them.