选项C和D 的第二个没看懂，请教求解！！就要考了，心急啊！！

yevivictory · 发表于 2011-10-8 15:44:26

?T-9-Q25.

?Scientists typically do their most creativework before the age of forty. It is commonly thought that this happens because aging by itself brings about a loss of creativecapacity. However, a study has found that almost all scientists whoproduce highly creative work beyond the age of forty entered their fields lateand less than a dozen years before their creative breakthroughs. Since creative breakthroughs by scientists under forty alsogenerally occur within a dozen years of the scientists’ entry into the field, the study’s finding strongly suggests that the real reason whyscientists over forty rarely produce highly creative work is not due to age butrather because most have spent too long in their fields.

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

?

A.The first is the position that the argumentas a whole depends; the second is evidence that is advanced as part of thatevidence.

B.The first and second are both claims thathave been advanced in support of a position that the argument as a wholeopposes.

C.The first is an explanation that theargument challenges; the second provides evidence in support of a competingexplanation that the argument defends.

D.The first is an explanation that theargument challenges; the second is evidence that has been used against analternative explanation that the argument defends.

E.The first is an explanation that theargument defends; the second is evidence that has been used to challenge thatexplanation.

vivita · 发表于 2011-10-9 11:16:21

是C么
C后面支持（in support of)论证所支持(defends)的与原解释竞争的解释
D说是反对(against)论证所支持(defends)的替代原解释的解释

AaronYao · 发表于 2011-10-9 12:03:11

Scientists typically do their most creativework before the age of forty. 首先文章说科学家大部分的创造性的工作都是在40岁之前搞定的 It is commonly thought that this happens because aging by itself brings about a loss of creative capacity. 然后引用普遍接受的结论就是变老会导致创造力的流失 However, 转折，表明作者态度 a study has found that almost all scientists whoproduce highly creative work beyond the age of forty entered their fields lateand less than a dozen years before their creative breakthroughs. Since creative breakthroughs by scientists under forty also generally occur within a dozen years of the scientists’ entry into the field, 说明原因，一些40岁以上的科学家在进入行业12年以内也经常有创造性的突破，从而得出作者的结论the study’s finding strongly suggests that the real reason why scientists over forty rarely produce highly creative work is not due to age butrather because most have spent too long in their fields.
所以可以明显看出第一段黑体是普遍接受的conclusion，也就是作者驳斥的结论，而后面一段黑体就是作者的用来支持自身结论的evidence

C.The first is an explanation that theargument challenges; the second provides evidence in support of a competing explanation that the argument defends.

competing explanation指的是与第一个黑体结论相抵触的解释，也就是作者得出的结论，即第二段黑体之后的部分

D.The first is an explanation that the argument challenges; the second is evidence that has been used against an alternative explanation that the argument defends.

alternative explanation指的是作者的解释，也就是第二段黑体，第二段黑体是支持的evidence，不是against
所以最终选C

yevivictory · 发表于 2011-10-9 23:40:55

十分详细，太感谢了。

选项C和D 的第二个没看懂，请教求解！！就要考了，心急啊！！

所属分类: GMAT考试

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