下面小編跟大家一起了解GRE邏輯單題練習(xí)題分享，希望對大家的學(xué)習(xí)有所幫助。
　　一、加強(qiáng)削弱題：加強(qiáng)的其中兩種（共五種）方式就是取非反對或者重復(fù)舉例
　　It can be inferred from the passage that the “first theories” of grazer control mentioned in line2would have been more convincing if researchers had been able to
　　(A) observe high phytoplankton numbers under natural lake conditions
　　(B) discover negative correlations between algae and zooplankton numbers from their field research
　　(C) understand the central importance of environmental factors in controlling the growth rates of phytoplankton
　　(D) make verifiable correlations of cause and effect between zooplankton and phytoplankton numbers
　　(E) invent laboratory techniques that would have allowed them to bypass their field research concerning grazer control
　　我們先找到對應(yīng)段落及定位詞
　　Many theories have been formulated to explain the role of grazers such as zooplankton in controlling the amount of planktonic algae (phytoplankton) in lakes.The first theoriesof such grazer control were merely based on observations of negative correlations between algal and zooplankton numbers. A low number of algal cells in the presence of a high number of grazers suggested,butdid not prove, that the grazers had removed most of the algae.
　　緊接著我們繼續(xù)找出but，即為反對觀點(diǎn)。
　　那么取非反對，文章說不能證明，取非那就是能證明，那不就是選項中的make verifiable correlations of cause and effect 嗎，答案呼之欲出。
　　二、explain題：使矛盾合理化
　　Historically, a cornerstone of classical empiricism has been the notion that every true generalization must be confirmable by specific observations. In classical empiricism, the truth of “All balls are red,” for example, is assessed by inspecting balls; any observation of a nonred ball refutes unequivocally the proposed generalization.

　　For W. V. O. Quine, however, this constitutes an overly “narrow” conception of empiricism. “All balls are red,” he maintains, forms one strand within an entire web of statements (our knowledge); individual observations can be referred only to this web as a whole. As new observations are collected, he explains, they must be integrated into the web. Problems occur only if a contradiction develops between a new observation, say, “That ball is blue,” and the preexisting statements. In that case, he argues, anystatement or combination of statements (not merely the “offending” generalization, as in classical empiricism) can be altered to achieve the fundamental requirement, a system free of contradictions, even if, in some cases, the alteration consists of labeling the new observation a “hallucination.”
　　所有的explain題目目的無非就是free of contradiction
　　給大家舉一個例子
　　The view to which line 18 refers serves to
　　(A) reconcile seemingly contradictory facts
　　(B) undermine a previously held theory
　　(C) take into account data previously held to be insignificant
　　(D) resolve a controversy
　　(E) question new methods of gathering data
　　我們依舊找到對應(yīng)文章段落和view
　　Since around 50 percent of all stars are believed to begin their lives with masses greater than 1.4M⊙, we might expect that one out of every two stars would die as a supernova. But in fact, only one star in thirty dies such a violent death. The rest expire much more peacefully as planetary nebulas. Apparently most massive stars manage to lose sufficient material that their masses drop below the critical value of 1.4 M⊙before they exhaust their nuclear fuel.
　　Evidence supportingthis viewcomes from observations of IRC 10216, a pulsating giant star(a star of great luminosity and of large mass)located 700 light-years away from Earth. A huge rate of mass loss (1 M⊙every 10,000 years) has been deduced from infrared observations of ammonia (NH3) molecules located in the circumstellar cloud around IRC 10216.
　　我們發(fā)現(xiàn)它所支持的view在前面而且，是來使矛盾合理化。
　　文章說expect 二分之一如此消亡，然而實(shí)際上是三十分之一如此消亡，那是不是就產(chǎn)生矛盾了，那就必須有一個解釋使得它合理化。理論確實(shí)如此，而實(shí)際也沒錯。
　　比如，杰哥說我很帥，鑫哥說我很丑。杰哥所用的依據(jù)是一張我的照片。
　　這個時候我們要使得矛盾合理化，那就是--杰哥拿的那張照片是P過的，所以杰哥鑫哥都沒說錯，我還是我，只是不同呈現(xiàn)的我。
　　那么上面是理論與實(shí)際不符，那view就是要矛盾合理化：reconcile seemingly contradictory facts
　　以上就是邏輯單題在閱讀題中的應(yīng)用。
　　但著一步，我們還是需要了解本身邏輯單題的解法。比如：很多同學(xué)都會對assumption題很頭疼，我想了一句**口訣：