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  3. In the past decade, new scientific developments in communications have changed the way many people gather information about poli

In the past decade, new scientific developments in communications have changed the way many people gather information about poli

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问题 In the past decade, new scientific developments in communications have changed the way many people gather information about politics. The most important of these new【C1】______is the Internet. Recent research suggests the use of the Internet for political information increases the  【C2】______of participation.
   While a(n) 【C3】______relationship between Internet news and political participation has been found, a theoretical link as to why the Internet is【C4】______from other media forms is largely【C5】______This research is an attempt to【C6】______the "black-box" linking the Internet and political participation by building on two theoretical【C7】______The first, surge and decline theory, comes out of political science and the second, media systems dependency theory, 【C8】______from communications. Both explanations focus on individual costs and benefits of political participation. The media can【C9】______the "costs" by providing sufficient information to make  【C10】______decisions about voting. Previous research【C11】______that the Internet benefits the public through the cost side of the equation. One of the media’s greatest【C12】______is information and the public【C13】______on media to provide them with the information they need. 【C14】______the Internet is capable of providing information【C15】______, and from a multitude of sources, one would expect it to【C16】______. political action through lowering the cost of information.
   Besides lowering participation costs, the media can【C17】______increase the benefits of participation. Intense media【C18】______of an event such as an election can【C19】______excitement that increases the perceived "benefit" of participating. The Internet may encourage a unique participation benefit【C20】______increased mobilization efforts.
【C9】
选项 A、alter
B、decrease
C、induce
D、cover
答案B
解析 alter改变；decrease减少；induce引起；cover覆盖。根据第二段最后一句“人们希望通过降低信息成本”可知此处表示的意思是“媒体可降低成本”，故选B。
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