[解析]
(1)答案:C 细节理解题.由第二段"Articles in colonial papers were a major force that affected public opinion in America to be fully independent."可知推动美国独立的主要因素是殖民地区报纸上的文章,所以答案选C.
(2)答案:A 细节理解题.由第二段"The first successful newspaper was the Boston News﹣Letter,begun by John Campbell in 1704.Although it was heavily supported by the government,the experiment was nearly a failure,with the limited number of published newspapers."可知波士顿报是第一份成功的报纸是因为它有政府的支持,所以答案选A.
(3)答案:C 细节理解题.由第一段"In America the first newspaper appeared in Boston in 1690.Published without permission,it was immediately banned,and all copies were destroyed."可知美国第一份报纸停止发行的原因是没有政府的支持,所以答案选C.
(4)答案:C 细节理解题.由第三段"The newspapers played an active role in the affairs of the new nation."可知美国的报刊行业在美国独立时期有很重要的地位,所以答案选C.