鍛鍊邏輯思維提升GRE閲讀能力

通過對舊GRE考題和兩次改革後的樣題比較，我們可以很清楚的發現，新GRE閲讀的文字內容，複雜程度有所降低。而邏輯複雜程度持續增加。這反映了ETS對於影響研究生階段學術成功的基本能力的更為深入的把握。實際上GRE考試閲讀文章難度，略高於北美研究生所需閲讀文章難度，採用這種形式的文章，主要目的.是模擬較高難度下研究生閲讀的情景，以期能夠測出學生的潛力，這個思路有點類似於我們常説的壓力面試。

Policymakers must confront the dilemma that fossil fuels continue to be an indispensable source of energy even though burning them produces atmospheric accumulations of carbon dioxide that increase the likelihood of potentially disastrous global climate change. Currently, technology that would capture carbon dioxide emitted by power plants and sequester it harmlessly underground or undersea instead of releasing it into the atmosphere might double the cost of generating electricity. But because sequestration does not affect the cost of electricity transmission and distribution, delivered prices will rise less, by no more than 50 percent. Research into better technologies for capturing carbon dioxide will undoubtedly lead to lowered costs.

1. The passage implies which of the following about the current cost of generating electricity?

It is higher than it would be if better technologies for capturing carbon dioxide were available.

It is somewhat less than the cost of electricity transmission and distribution.

It constitutes at most half of the delivered price of electricity.

It is dwelt on by policymakers to the exclusion of other costs associated with electricity delivery.

It is not fully recovered by the prices charged directly to electricity consumers.

對黑色部分文字的邏輯進行提煉我們發現，得出這樣一個邏輯推理鏈條。

環保技術(technology that would capture carbon dioxide emitted by power plants and sequester it harmlessly underground or undersea instead of releasing it into the atmosphere)增加一倍發電成本(double the cost of generating electricity)。環保技術不改變傳輸成本(the cost of electricity transmission and distribution)。最終價格(delivered prices)增加不超過50%。

最終價格=發電成本+傳輸成本使用環保技術後，發電成本增加了原來的一倍，但是最終價格增長不超過50%，可以得出結論，發電成本，最多佔最終價格的50%。

以上文字同傳統GRE考試文章比起來，語言難度不大。難度來自於邏輯複雜，尤其是在有較大的時間壓力的情況下，能夠快速清晰的得出結論，並不容易。

針對新GRE的準備思路國內大學生，在邏輯思維方面訓練不多，新GRE的考試正好考到了學生的弱點。如果準備新GRE考試，建議加強兩方面訓練。

1、 英文閲讀過程中，快速歸納邏輯鏈條的能力。很多學生閲讀仍然停留在翻譯的階段，這在新GRE中會帶來很大的麻煩。

2、 增強邏輯思維訓練，GRE本質來講，是對英語為母語者的能力考試。考察邏輯思維的敏捷程度，嚴謹程度，是這個考試的本質。