Although the earliest surviving Greek inscriptions written in an alphabet date from the eighth century B.C., a strong case can be made that the Greeks actually adopted alphabetic writing at least two centuries earlier. Significantly, the text of these earliest surviving Greek inscriptions sometimes runs from right to left and sometimes from left to right. Now, the Greeks learned alphabetic writing from the Phoenicians, and in the process they would surely have adopted whatever convention the Phoenicians were then using with respect to the direction of writing. Originally, Phoenicians writing ran in either direction, but by the eighth century B.C. it had been consistently written from right to left for about two centuries.
In the argument given, the two portions in boldface play which of the following roles?
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AThe first provides evidence in support of the position that the argument seeks to establish; the second is that position.
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BThe first provides evidence in support of the position that the argument seeks to establish; the second presents an assumption on which that argument relies.
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CThe first is an assumption that the argument concludes is unjustified; the second presents part of the grounds for that conclusion.
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DThe first is evidence that forms the basis for an objection to the position that the argument seeks to establish; the second is that position.
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EThe first is evidence that forms the basis for an objection to the position that the argument seeks to establish; the second is a judgment that is introduced in order to call into question the relevance of that evidence.
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正确答案: B