Primary source Primary sources are the writings of the people who lived at (1)　time and offered an inside view of a particular event.

　　Secondary

　　source Secondary sources are the writings of the people who write about the same events at a much later date with explanation and analysis (2)　on primary sources.

　　News on TV The TV (3)　in the studio is tile secondary source while the reporter on the (4)　is the primary source.

　　News in a

　　newspaper A newspaper reporter can be both primary and secondary source if he collects the information and then (5)　the news.But the photographer (6)　with the reporter is always a primary source.

　　Fact A fact is something that everybody agrees has happened.In other (7)　，it is something that is (8)　.

　　Opinion An opinion is somebody's idea of what (9)　on.

　　Conclusion Primary and secondary sources are both important for (10)　the truth.

　　答案：1.that/the　2.based　3.presenter

　　4.scene/spot　5.writes　6.working　7.words

　　8.true　9.went　10.discovering

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