题目

Tiny monitoring devices have become an increasingly common way for scientists to study elusive animals that are difficult to track on a day-to-day basis. However, now it seems that smart. Seals have caught on to the trick and are using it to their advantage to catch fish!     To find out if that is true, a team of researchers from the University of St. Andrews in Scotland selected a group often young grey seals that had neither encountered the ocean nor been exposed to any kind of acoustic（声音的）tags. The researchers then placed the seals one at a time, inside a pool that c室内环境的质量的恶化，会对人体健康造成危害，防治室内环境恶化的要求是A.建筑房屋时使用绿色环保的建筑材料B.养成良好的生活习惯，以改善室内环境C.使用煤、石油等化石燃料D.A和B都是