[解析]
(1)D.细节理解题.根据第三段I'd seen people going crazy to buy canned air from Canada and Australia,so I thought it was time to push business the other way," 可知,看到人们疯狂地购买来自于加拿大和澳大利亚队灌装空气,Dominic决定换种方式来提升企业的效益;故选D.
(2)B.推理判断题.根据第三段These cans are light,portable,you can just imagine someone's face when they unwrap it for Christmas可知圣诞节收到北京罐头空气时是十分惊讶的;故选B.
(3)B.词义猜测题.根据第四段The few mouth﹣fulls of Beijing air come in standard tin cans featuring a couple of iconic city landmarks as well as a snarky description of the contents:"a unique blend of nitrogen,oxygen and some other stuff".可知充满了北京的空气的标准锡罐具有几个标志性的城市地标以及网站描述的内容"一个独特的氮、氧和其他一些东西";可知意为东西;故选B
(4)C.推理判断题.根据最后一段Anyway,it is probably a unique way to arouse public awareness of protecting the environment可知作家可能期望我们更关心环境;故选C.