2. 外语
  3. Guitar strings often go "dead"—become less responsive and bright in tone—after a few weeks of intense use. A researcher whose so

Guitar strings often go "dead"—become less responsive and bright in tone—after a few weeks of intense use. A researcher whose so

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问题 Guitar strings often go "dead"—become less responsive and bright in tone—after a few weeks of intense use. A researcher whose son is a classical guitarist hypothesized that dirt and oil, rather than changes in the material properties of the string, were responsible. Which of the following investigations is most likely 10 yield significant information that would help to evaluate the researcher’s hypothesis?
选项 A、Determining if a metal alloy is used to make the strings used by classical guitarists.
B、Determining whether classical guitarists make their strings go dead faster than do folk guitarists.
C、Determining whether identical lengths of string, of the same gauge, go dead at different rates when strung on various brands of guitars.
D、Determining whether a dead string and a new string produce different qualities of sound.
E、Determining whether smearing various substances on new guitar strings causes them to go dead
答案E
解析 该假想有两部分：第一，频繁地使用不会产生使琴弦死掉的材料变化，第二，是脏东西和油造成的这种现象，选项(E)建议的实验通过将那些已知具有它们原来材料性质的琴弦弄脏对这个假想进行直接测试，因此，(E)是正确答案；因为同演奏风格[选项(B)]和吉他品牌[选项(C)]相关的因素可能会影响到琴弦是如何变脏的，(B)和(C)中提出的调查得到的结果不会对该假想有清楚的评估；关于琴弦材料的信息[选项(A)]在明确同该假想的关系前需要相当多的补充信息；短文已经给出了(D)中调查所能得出的信息。
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