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题目选项分析

Most of Western music since the Renaissance has been based on a seven-note scale known as the diatonic scale, but when did the scale originate? A fragment of a bone flute excavated at a Neanderthal campsite has four holes, which are spaced in exactly the right way for playing the third through sixth notes of a diatonic scale. The entire flute must surely have had more holes, and the flute was made from a bone that was long enough for these additional holes to have allowed a complete diatonic scale to be played. Therefore, the Neanderthals who made the flute probably used a diatonic musical scale.

In the argument given, the two portions in boldface play which of the following roles?

【选项】 The first describes a discovery as undermining the position against which the argument is directed; the second states the main conclusion of the argument.

选项是否正确?

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题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:300难题-13
  • 题目来源2:GWD-277
难度: 难