Most of Western music since the Renaissance has been based on a seven-note scale known as the diaton...

题目信息

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?

A:The first is presented as evidence that is confirmed by data presented elsewhere in the argument given; the second states a hypothesis that this evidence is used to undermine.

B:The first is an opinion, for which no supporting evidence is presented in the argument given, that is used to support the main conclusion of the argument; the second is that main conclusion.

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

D:The first is a preliminary conclusion drawn on the basis of evidence presented elsewhere in the argument given; the second is the main conclusion that this preliminary conclusion supports.

E:The first provides evidence to support the main conclusion of the argument; the second states a subsidiary conclusion that is drawn in order to support the main conclusion stated earlier in the argument.

参考答案及共享解析

共享解析来源为网络权威资源、GMAT高分考生等；如有疑问，欢迎在评论区提问与讨论

正确答案： B:The first is an opinion, for which no supporting evidence is presented in the argument given, that is used to support the main conclusion of the argument; the second is that main conclusion.

答案B

题目大意：题干没有出现转折的意思.先说文艺复兴后用的是七个音阶.第一段粗体字说:一残缺笛子有4 个洞,大概排列顺序与7音阶比较搭.接着说应该有更多洞,而完整笛子确实是更长的.第二段粗体说:笛子很可能用的就是 7个音阶(有7个洞)。

选项分析：

A：therefore后面是结论，排除A

B：正确，第一个黑体是一个断言，并没有进行验证，支持了主结论，第二个黑体是主结论

C：文段并没有削弱什么观点

D：文段没有证明第一个黑体的内容

E：同A

笔记