羅馬數(shù)字題是GRE閱讀中出現(xiàn)比較多的一種題型，通常情況，考試的題型中定會有一道或兩道這類題型。雖然，出題的數(shù)目不是很多，但是也要特別注意。羅馬數(shù)字題主要考查考生對文章的理解以及一些邏輯推理能力。在GRE閱讀中對文章的一些例子、解釋等要特別關(guān)注，要在文中做好標記，以便迅速地找到答案。
羅馬數(shù)字題題的基本結(jié)構(gòu)：
The author provides following which of the following examples in the passage?
Ⅰ only
Ⅱ only
Ⅲ only
Ⅰ & Ⅱ
Ⅱ & Ⅲ
當遇到羅馬數(shù)字題時，首先回原文找列舉，沒有列舉再繼續(xù)看題做答。做大多數(shù)羅馬數(shù)字題有捷徑可走的，考生應(yīng)該在看完選項后先看備選答案。比如，幾個備選答案都有Ⅰ，則Ⅰ肯定是正確的，就不必再判斷了。
下面舉一個具體的例子：
The recent, apparently successful, prediction by mathematical models of an appearance of El Nino—the warm ocean current that periodically develops along the Pacific coast of South America—has excited researchers……
It has long been known that during an El Nino, two conditions exist: (1) unusually warm water extends along the eastern Pacific, principally along the coasts of Ecuador and Peru, and (2) winds blow from the west into the warmer air rising over the warm water in the east. These winds tend to create a feedback mechanism by driving the warmer surface water into a “pile” that blocks the normal upwelling of deeper, cold water in the east and further warms the eastern water, thus strengthening the wind still more. The contribution of the model is to show that the winds of an El Nino, which raise sea level in the east, simultaneously send a signal to the west lowering sea level. According to the model, that signal is generated as a negative Rossby wave, a wave of depressed, or negative, sea level, that moves westward parallel to the equator at 25 to 85 kilometers per day. Taking months to traverse the Pacific, Rossby waves march to the western boundary of the Pacific basin, which is modeled as a smooth wall but in reality consists of quite irregular island chains, such as the Philippines and Indonesia.
無論做什么題，我們在對完文章后，都要清楚一個基本的問題，就是文章的結(jié)構(gòu)和行文思路。這篇文章屬于結(jié)論解釋型文章，作者在第一段的第一句話就提出了結(jié)論，后面所以內(nèi)容都是對這個結(jié)論的解釋說明。所以，文章的首句是全文的中心句(topic sentence)。
It can be inferred from the passage that which of the following would result fairly immedia ately from the cessation of the winds of an El Nino?
I. Negative Rossby waves would cease to be generated in the eastern Pacific.
II. The sea level in the eastern Pacific would fall.
III. The surface water in the eastern Pacific would again be cooled by being mixed with deep water.
(A) I only
(B) II only
(C) I and II only
(D) I and III only
(E) I, II, and III
分析：
1.弄清題目和選項的意思
題目的意思是“如果導致厄爾尼諾的風停止，會出現(xiàn)什么結(jié)果?”
I. 負的R波在太平洋不會產(chǎn)生。
II. 東太平洋的海平會下降。
Ⅲ. 東太平洋表層海水會因為深層水的混合而重新變冷。
2.找到解答題目的突破口
文章中的第二段主要講了這種風的效果，如果是風停止了，那么我們只需對文中的效果取非即可，這是解答這道題的關(guān)鍵。文中的陰影部分就是對這部分的解釋。下面我們就這三個選項進行分析。
Ⅰ. 這部分在文中的定位是The contribution of the model is to show that the winds of an El Nino, which raise sea level in the east, simultaneously send a signal to the west lowering sea level. According to the model, that signal is generated as a negative Rossby wave, 即“此模型的貢獻在于顯示了厄爾尼諾現(xiàn)象中的風使東海平面升高，同時向西部低海平面區(qū)發(fā)送一個信號。該信號可稱作負的Rossby波，此波低于海平面，平行于赤道西移。”我們就可以知道，這個信號是由厄爾尼諾現(xiàn)象中的風所導致的，如果導致厄爾尼諾的風停止，那么也就不會有這個信號的出現(xiàn)，這樣，Ⅰ的說法是正確的。
Ⅱ. 這部分在文中的定為也是上面所提到的，在厄爾尼諾現(xiàn)象中的風使東海平面升高，那么，如果導致厄爾尼諾的風停止了，東太平洋的海平面就會恢復正常的狀態(tài)，這種正常的狀態(tài)應(yīng)該與厄爾尼諾現(xiàn)象中的風使東海平面升高是相反的，所以，東太平洋的海平會下降是正確的。
Ⅲ. 這部分在文中的定位是winds blow from the west into the warmer air rising over the warm water in the east. These winds tend to create a feedback mechanism by driving the warmer surface water into a “pile” that blocks the normal upwelling of deeper, cold water in the east and further warms the eastern water, thus strengthening the wind still more.即“風從西流向東部由較暖水中升起的較暖空氣中。這些風形成了一種反映機制，即通過將較暖水在表層匯成一個“水堆”而阻止了通常狀況下的深層冷水的上涌并進一步使東部水域變暖，從而使暖風更加劇烈。”這就表明，這種風會使深層冷水變暖。因此，如果導致厄爾尼諾的風停止了，就不會出現(xiàn)上述的現(xiàn)象，而東太平洋表層海水會因為深層水的混合而重新變冷。這種說法是正確的。
通過上面的分析，Ⅰ，Ⅱ，Ⅲ 三種說法都是正確的，所以正確選項是E.
小結(jié)：
羅馬數(shù)字題的難度并不大，重要的是在原文中的正確定位。在讀文章的時候，要特別注意原文中列舉出的內(nèi)容，做好相應(yīng)的標記。在解答的時候，將句子和選項結(jié)合著看，這樣可以節(jié)省不少時間。
以上是GRE閱讀羅馬數(shù)字題的相關(guān)解析，相信同學們對上文已經(jīng)很清楚，在備考時可以參考以上內(nèi)容，除了大量的練習之外還要不斷的總結(jié)經(jīng)驗技巧。
羅馬數(shù)字題題的基本結(jié)構(gòu)：
The author provides following which of the following examples in the passage?
Ⅰ only
Ⅱ only
Ⅲ only
Ⅰ & Ⅱ
Ⅱ & Ⅲ
當遇到羅馬數(shù)字題時，首先回原文找列舉，沒有列舉再繼續(xù)看題做答。做大多數(shù)羅馬數(shù)字題有捷徑可走的，考生應(yīng)該在看完選項后先看備選答案。比如，幾個備選答案都有Ⅰ，則Ⅰ肯定是正確的，就不必再判斷了。
下面舉一個具體的例子：
The recent, apparently successful, prediction by mathematical models of an appearance of El Nino—the warm ocean current that periodically develops along the Pacific coast of South America—has excited researchers……
It has long been known that during an El Nino, two conditions exist: (1) unusually warm water extends along the eastern Pacific, principally along the coasts of Ecuador and Peru, and (2) winds blow from the west into the warmer air rising over the warm water in the east. These winds tend to create a feedback mechanism by driving the warmer surface water into a “pile” that blocks the normal upwelling of deeper, cold water in the east and further warms the eastern water, thus strengthening the wind still more. The contribution of the model is to show that the winds of an El Nino, which raise sea level in the east, simultaneously send a signal to the west lowering sea level. According to the model, that signal is generated as a negative Rossby wave, a wave of depressed, or negative, sea level, that moves westward parallel to the equator at 25 to 85 kilometers per day. Taking months to traverse the Pacific, Rossby waves march to the western boundary of the Pacific basin, which is modeled as a smooth wall but in reality consists of quite irregular island chains, such as the Philippines and Indonesia.
無論做什么題，我們在對完文章后，都要清楚一個基本的問題，就是文章的結(jié)構(gòu)和行文思路。這篇文章屬于結(jié)論解釋型文章，作者在第一段的第一句話就提出了結(jié)論，后面所以內(nèi)容都是對這個結(jié)論的解釋說明。所以，文章的首句是全文的中心句(topic sentence)。
It can be inferred from the passage that which of the following would result fairly immedia ately from the cessation of the winds of an El Nino?
I. Negative Rossby waves would cease to be generated in the eastern Pacific.
II. The sea level in the eastern Pacific would fall.
III. The surface water in the eastern Pacific would again be cooled by being mixed with deep water.
(A) I only
(B) II only
(C) I and II only
(D) I and III only
(E) I, II, and III
分析：
1.弄清題目和選項的意思
題目的意思是“如果導致厄爾尼諾的風停止，會出現(xiàn)什么結(jié)果?”
I. 負的R波在太平洋不會產(chǎn)生。
II. 東太平洋的海平會下降。
Ⅲ. 東太平洋表層海水會因為深層水的混合而重新變冷。
2.找到解答題目的突破口
文章中的第二段主要講了這種風的效果，如果是風停止了，那么我們只需對文中的效果取非即可，這是解答這道題的關(guān)鍵。文中的陰影部分就是對這部分的解釋。下面我們就這三個選項進行分析。
Ⅰ. 這部分在文中的定位是The contribution of the model is to show that the winds of an El Nino, which raise sea level in the east, simultaneously send a signal to the west lowering sea level. According to the model, that signal is generated as a negative Rossby wave, 即“此模型的貢獻在于顯示了厄爾尼諾現(xiàn)象中的風使東海平面升高，同時向西部低海平面區(qū)發(fā)送一個信號。該信號可稱作負的Rossby波，此波低于海平面，平行于赤道西移。”我們就可以知道，這個信號是由厄爾尼諾現(xiàn)象中的風所導致的，如果導致厄爾尼諾的風停止，那么也就不會有這個信號的出現(xiàn)，這樣，Ⅰ的說法是正確的。
Ⅱ. 這部分在文中的定為也是上面所提到的，在厄爾尼諾現(xiàn)象中的風使東海平面升高，那么，如果導致厄爾尼諾的風停止了，東太平洋的海平面就會恢復正常的狀態(tài)，這種正常的狀態(tài)應(yīng)該與厄爾尼諾現(xiàn)象中的風使東海平面升高是相反的，所以，東太平洋的海平會下降是正確的。
Ⅲ. 這部分在文中的定位是winds blow from the west into the warmer air rising over the warm water in the east. These winds tend to create a feedback mechanism by driving the warmer surface water into a “pile” that blocks the normal upwelling of deeper, cold water in the east and further warms the eastern water, thus strengthening the wind still more.即“風從西流向東部由較暖水中升起的較暖空氣中。這些風形成了一種反映機制，即通過將較暖水在表層匯成一個“水堆”而阻止了通常狀況下的深層冷水的上涌并進一步使東部水域變暖，從而使暖風更加劇烈。”這就表明，這種風會使深層冷水變暖。因此，如果導致厄爾尼諾的風停止了，就不會出現(xiàn)上述的現(xiàn)象，而東太平洋表層海水會因為深層水的混合而重新變冷。這種說法是正確的。
通過上面的分析，Ⅰ，Ⅱ，Ⅲ 三種說法都是正確的，所以正確選項是E.
小結(jié)：
羅馬數(shù)字題的難度并不大，重要的是在原文中的正確定位。在讀文章的時候，要特別注意原文中列舉出的內(nèi)容，做好相應(yīng)的標記。在解答的時候，將句子和選項結(jié)合著看，這樣可以節(jié)省不少時間。
以上是GRE閱讀羅馬數(shù)字題的相關(guān)解析，相信同學們對上文已經(jīng)很清楚，在備考時可以參考以上內(nèi)容，除了大量的練習之外還要不斷的總結(jié)經(jīng)驗技巧。