Archaeologists in Egypt have excavated a 5,000-year-old wooden hull that is the earliest surviving example of a "built" boat--in other words, a boat constructed out of planks fitted together--and that thus represents a major advance, in terms of boat-building technology, over the dugout logs and reed vessels of more ancient vintage.
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Atogether--and that thus represents
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Btogether--and this has represented
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Ctogether, and it represents
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Dtogether that was representing
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Etogether to represent
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正确答案: A