题目

In between all the measures to battle the severe air pollution in Delhi,India,there’s one more option-a bar that has”pure air”.Founded by Aryavir Kumar,Oxy Pure,Delhi’s first-ever oxygen bar,offers 15 minutes of 80-90 percent pure oxygen,costing Rs 299($4.2).Customers are given a lightweight tube for oxygen intake.The device(装置)is placed near the customer’s nostrils(鼻孔)through which they are advised to breathe in the oxygen.The bar also offers its customers several aromas(气味)to go with oxygen,including lemongrass,cherry and more.According to the aroma people choose,each s 38．为了实现对草原资源的合理利用，采用划区轮牧的方法，其优点中不正确的是   A．减少牲畜自身能量的消耗        B. 有利于牧草的恢复   C．有利于年年增加载畜量          D. 有利于充分均匀地采食牧草