GMAT考试：Testprep数学精解_GMAT数学

GMAT考试：Testprep数学精解

　　if in that

　　as owing to

　　suppose inasmuch as

　　assume may be derived from

　　Example：

　　Since the incumbents views are out of step with public opinion， he probably　will not be reelected.

　　Here since is used to flag the premise that the incumbents positions are　unpopular.

　　Suppressed Premises

　　Most arguments depend on one or more unstated premises. Sometimes this indicates a weakness in the argument， an oversight by the writer. More often， however， certain premises are left tacit because they are too numerous， or the　writer assumes that his audience is aware of the assumptions， or he wants the audience to fill in the premise themselves and therefore be more likely to　believe the conclusion.

　　Example：

　　Conclusion： I knew he did it.

　　Premise： Only a guilty person would accept immunity from prosecution.

　　The suppressed premise is that he did， in fact， accept immunity. The speaker　assumes that his audience is aware of this fact or at least is willing to believe it， so to state it would be redundant and ponderous. If the unstated　premise were false ， the argument would　not technically be a lie; but it would be very deceptive. The unscrupulous　writer may use this ploy if he thinks that he can get away with it. That is，　his argument has the intended effect and the false premise， though implicit， is hard to find or is ambiguous. Politicians are not at all above using th　