GMAT申友逻辑CR题库-Delta Products Inc. has recently switched at least partly from older technologies using fossil fuels to new technologies powered by-OG2022-真题答案解析

题库解析 > 题型 >

本题由2提供

Delta Products Inc. has recently switched at least partly from older technologies using fossil fuels to new technologies powered by electricity. The question has been raised whether it can be concluded that, for a given level of output, Delta’s operation now causes less fossil fuel to be consumed than it did formerly. The answer,

clearly, is yes, since the amount of fossil fuel used to generate the electricity needed to power the new technologies is less than the amount needed to power the older technologies, provided level of output is held constant.

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

A. The first identifies the content of the conclusion of the argument; the second provides support for that conclusion.

B. The first provides support for the conclusion of the argument; the second identifies the content of that conclusion.

C. The first states the conclusion of the argument; the second calls that conclusion into question.

D. The first provides support for the conclusion of the argument; the second calls that conclusion into question.

E. Each provides support for the conclusion of the argument.

登录申友雷哥GMAT，查看答案及解析

视频解析

资深讲师题题有解析

{{current}} / {{duration}}

登录申友雷哥GMAT，查看完整视频

文字解析

答案：

Argument Ev

aluation

Situation Delta switched from technologies using fossil fuels to ones using electricity. It has been asked whether this results in less fossil fuel used per level of output. The answer is that it does.

Reasoning What roles do the two boldfaced portions play in the argument? The first

boldfaced statement is simply asserted by the passage; no premise, or reason, is given to support it. But the second boldfaced statement, when it is first

introduced, is not asserted to be true, but rather is identified as something that might be inferred from the first statement. By the end of the passage the argument concludes that the second statement is true.

A. This option simply reverses the roles that the statements play in the argument.

B. Correct. This option identifies the roles the boldfaced portions play: The second statement is not, on its own, the conclusion, because the argument initially merely asks whether it can be concluded on the basis of the first statement (that is, it asks whether the first boldface statement provides support for it). The conclusion of the argument is actually the statement The answer, clearly, is yes. The word yes is

elliptical for Yes, it can be concluded that for a given level of output, Delta’s operation now causes less fossil fuel to be consumed than it did formerly. The boldface portion

tells us what can be concluded, and thus it can accurately be described as the content of the conclusion.

C. Nothing in the passage is intended to support the first statement; and the second statement is not supposed to call the first into question.

D. This correctly identifies the role of the first statement, but the second boldfaced portion does not call the argument’s conclusion into question—it is part of a sentence that refers to the question whether that conclusion can be drawn from the first

statement.

E. Again, this is only half right. The second boldfaced portion is not offered as support for the conclusion; if it were offered as such support, the argument would be guilty of

circular reasoning, since the second boldfaced portion states exactly what the argument concludes.