呼吸道感染（尤其是肺炎）、咳嗽明显时应（）
A.少用祛痰药、多用镇咳药
B.多用祛痰药、少用镇咳药
C.同时使用祛痰药和镇咳药
D.常规使用可待因
E.不使用祛痰药和镇咳药
参考答案：B
解析：婴幼儿患呼吸道感染时，除适当选择抗生素外，应根据病情选择祛痰、镇咳、平喘药物。祛痰药物能稀释痰液，使之易于咳出；镇咳药物能抑制咳嗽反射的任何一个环节，产生镇咳作用；平喘药物能作用于诱发哮喘的不同环节，缓解或预防哮喘的发作。咳嗽时，一般不用镇咳药，而应用祛痰药或雾化吸入法稀释呼吸道的分泌物，配合体位引流排出痰液。
Passage Four
| The most noticeable trend among today’s media companies is vertical integration—an attempt to control several related aspects of the media business at once, each part helping the other. Besides publishing magazines and books, Time Warner, for example, owns Home Box Office (HBO), Warner movie studios, various cable TV systems throughout the United States and CNN as well. The Japanese company Matsushita owns MCA Records and Universal Studios and manufactures broadcast production equipment. To describe the financial status of today’s media is also to talk about acquisitions (并购). The media are buying and selling each other in unprecedented numbers and forming media groups to position themselves in the marketplace to maintain and increase their profits. In 1986, the first time a broadcast network had been sold, two networks were sold that year—ABC and NBC. Media acquisitions have skyrocketed (剧增) since 1980 for two reasons. The first is that most big corporations today are publicly traded companies, which means that their stock is traded on one of the nation’s stock exchanges. This makes acquisitions relatively easy. A media company that wants to buy a publicly owned company can buy that company’s stock when the stock becomes available. The open availability of stock in these companies means that anybody with enough money can invest in the American media industries, which is exactly how Rupert Murdoch joined the media business. The second reason for the increase in media alliances is that beginning in 1980, the Federal Communications Commission (FCC) gradually deregulated (解除管制) the broadcast media. Before 1980, for example, the FCC allowed one company to own only five TV stations, five AM radio stations, and five FM radio stations; companies also were required to hold onto a station for three years before the station could be sold. The post-1980 FCC eliminated the three-year rule and raised the number of broadcast holdings allowed for one owner. This trend of media acquisitions is continuing throughout the 1990s, as changing technology expands the market for media products. The issue of media ownership is important. If only a few corporations direct the media industries in this country, the outlets for differing political viewpoints and innovative ideas could be limited. |
According to the passage, what makes acquisitions easier
A．The changing technology employed by the media.
B．The media’s increasing profits in the marketplace.
C．The availability of the media stocks on stock exchanges.
D．The ever tougher regulations of the FCC on the media since 1980.