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3.ThefirstwordsspokenbyThomasEdisonintoaphonograph,hisinvention, were "Mary had a littlelamb."
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4.The voting machine was a more important invention than thephonograph.
Archeology, a fascinating field of study, is concerned with people and cultures of thepast.
Archeologists study historic cultures by analyzing their objects and buildings.
Most high-school graduates should work for a year before attending college.
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