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新闻传播相对于公共关系活动中的各种传播形式有其自身的特征，其第一特征就是免费性。()

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非正式沟通是在正式沟通渠道以外进行的信息传递和交流，它不受政府监督，自由选择沟通渠道。()

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我国教育法体系中的“母法”是()。

A. 《中华人民共和国义务教育法》
B. 《中华人民共和国教育法》
C. 《中华人民共和国教师法》
D. 《中华人民共和国职业教育法》

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社会公众是公共关系工作的客体，它包括与特定组织相关的内部公众和外部公众。()

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Although the ratio of physicians to total population is about the same in the United States and Canada, the United States has 33 percent more surgeons per capita. Clearly, this is the reason people in the United States undergo 40 percent more operations per capita than do Canadians. The explanation given above rests on an assumption that

A. patients in the United States do not have a greater need for surgery than do patients in Canada.
B. the population of the United States is not larger than that of Canada.
C. United States patients sometimes travel to Canada for certain kinds of surgery.
D. general practitioners in the United States do not as a rule examine a patient who is a candidate for surgery before sending the patient to a surgeon.
E. there are no unnecessary surgical operations performed in Canada.

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