GMAT考试Testprep数学精解_GMAT数学

GMAT考试Testprep数学精解

　　The Nanuuts believe that they should not take from Nature anything She cannot replenish during their lifetime. This assures that future generations can　enjoy the same riches of Nature that they have. At the current rate of destruction， the rain forests will disappear during our lifetime. Do we have an obligation to future generations to prevent this result?

　　Here the author trusts that the power of her argument will persuade the reader to answer the question affirmatively.

　　Taking this rhetorical technique one step further， the writer may build up to the conclusion but leave it unstated. This allows the reader to make up his own mind. If the build-up is done skillfully， the reader will be more likely to agree with the author， without feeling manipulated.

　　Example：

　　He who is without sin should cast the first stone. There is no one here who　does not have a skeleton in his closet.

　　The unstated but obvious conclusion here is that none of the people has the　right to cast the first stone.

　　When determining the conclusions scope be careful not to read any more or lesssintosit than the author states. GMAT writers often create wrong answer-choices by slightly overstating or understating the authors claim. Certain words limit the scope of a statement. These words are called quantifiers――pay　close attention to them. Following is a list of the most important quantifiers：