题目

It’s always good to experience something new in life. Traveling gives plenty of such opportunities and when you choose a hotel to stay in next time, here, in this website, is a list of 4 most weird (怪异的) hotels in the world.Dog Bark Park InnIf you keep a dog and love animals, then you will definitely become a fan of this hotel. Here visitors will find a microwave oven to prepare a simple meal, games, puzzles and books to entertain themselves, an air conditioner and of course a bath. There is no TV set or a phone though. Dennis Sullivan and Frances Conklin, the designers of this hotel, 当用过量的红磷燃烧掉密闭集气瓶中的氧气后，瓶中剩余的气体是（　　）A．纯净物B．氮气C．稀有气体D．混合物