Our behavior is changed The first copy right law in the United States was passed by congress in
				出自-2014年6月听力原文
				In 1976, congress enacted the latest copy right law, taking into consideration the technological developments that had occurred since the passage of the copy right act of
				出自-2014年6月听力原文
				Congress has tried to help students with college costs through Pell Grants and other forms of tuition support.
				出自-2012年6月阅读原文