GMAT申友逻辑CR题库-Guitar strings often go “dead”—become less responsive and bright in tone—after a few weeks of intense use. A researcher whose-破解版12-真题答案解析

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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 to yield significant information that would help to evaluate the researcher‘s hypothesis?

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

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答案：

吉他弦经常

死音。一个研究者假设油污而非弦的性质变化导致这种情况。评价题关键因素，油污，弦的性质 (A) 是否一种金属合金用来做经典吉他手用的吉他弦；无关键因素，排 (B)经典吉他手和民谣吉他手死音快慢的比较；无关比较，排 (C) 是否被不同吉他乐队用的时候，同样的弦死音率不同；吉他乐队，跳出范围，排 (D) 是否死音弦和新弦产生的音质不同；无关比较，排 (E) 是否新弦上的抹上油污导致死音；紧扣题干逻辑链，如果回答为是，即油污导致死音；如果回答为否，那就是油污以外的因素比如弦性质改变导致死音；正确