[单选题]听诊患者胸骨右缘第二肋间可闻及粗糙而响亮的吹风样收缩期杂音,该患者应为
A.主动脉瓣狭窄
B.主动脉瓣关闭不全
C.二尖瓣狭窄
D.二尖瓣关闭不全
E.肺动脉瓣狭窄

The often criticized child of the industrial age, advertising has grown as society has become more industrialized and, therefore, more commercialized. No modem industry or company can survive without advertising; it is the vital link between the producer and the customer. If advertising were abolished(废止), as many people have suggested it should be, the public and the companies that advertise would suffer a considerable loss.
Most people think of television as an inexpensive source of entertainment. Television’s primary purpose, however; is not to provide an entertainment service except in the case of government owned networks. It exists in order to promote products for companies. If the television industry did not receive income from advertising, watching television would be at least as expensive as going to the movies.
Like television, many magazines and newspapers exist primarily to sell products. In some cases, the stories, pictures, and editoria
A. Advertising does not always increase sales.
B. Advertising serves to relay information from buyers to producers.
C. Advertising is and will continue to be a necessary part of everyday life.
D. It is suggested that advertising should be abolished.