GMAT邏輯數(shù)量范圍題怎么破.

邏輯是GMAT考試中不好掌握的部分，復(fù)習(xí)GMAT邏輯的考生需要有不錯(cuò)的基礎(chǔ)。邏輯考試的題型也是多種多樣的，這里重點(diǎn)分享的是邏輯里面的數(shù)量范圍題。澳際小編下面重點(diǎn)給大家介紹一下，希望GMAT入門的考生能關(guān)注到：

　　GMAT考試中數(shù)量的范圍是邏輯題?？迹貏e是MUST BE問題，混淆答案也常來于此。下面一題是LSAT，先討論，后再公布答案及解釋。

　　The importance of the ozone layer to terrestrial animals is that it entirely filters out some wavelengths of light but lets others through. Holes in the ozone layer and the dangers associated with these holes are well documented. However, one danger that has not been given sufficient attention is that these holes could lead to severe eye damage for animals of many species.

　　Which one of the following is most strongly supported by the statements above, if they are true.

　　A). All wavelengths of sunlight that can cause eye damage are filtered out by the ozone layer where it is intact.

　　B). Few species of animals live on a part of the earth&aposs surface that is not threatened by holes in the ozone layer

　　C). Some species of animals have eyes that will not suffer any damage when exposed to unfiltered sunlight

　　D). A single wavelength of sunlight can cause severe damage to the eyes of most species of animals

　　E). Some wavelengths of sunlight that cause eye damage are more likely to reach the earth&aposs surface where there are holes in the ozone layer than where there are not,

　　分析部分：

　　The importance of the ozone layer to terrestrial animals is that it entirely filters out some wavelengths of light but lets others through. Holes in the ozone layer and the dangers associated with these holes are well documented. However, one danger that has not been given sufficient attention is that these holes could lead to severe eye damage for animals of many species.

　　Which one of the following is most strongly supported by the statements above, if they are true.

　　針對(duì)文章采取的GMAT邏輯分析：

　　A). All wavelengths of sunlight that can cause eye damage are filtered out by the ozone layer where it is intact.錯(cuò)的原因：All wavelengths 太strong。原文只知完好的臭氧層濾掉一部分光，讓一部分通過，并說通過的那部分對(duì)很多動(dòng)物有害。從這點(diǎn)很容易誤認(rèn)有害的都給濾掉了。其實(shí)原文沒說是否那通過的一部分是否含有有害波長(zhǎng)。這里采用gamt考試技巧中的排除法，所以錯(cuò)。

　　原文問：is most strongly supported by the statements above，如果問哪個(gè)選項(xiàng)support 結(jié)論。A應(yīng)該是個(gè)好選項(xiàng)。非常strong!但是因?yàn)槭潜辉闹С?，選項(xiàng)不能超越原文提供的范圍：some wavelengths 不能推出all wavelengths，所以A錯(cuò)了。

　　B). Few species of animals live on a part of the earth&aposs surface that is not threatened by holes in the ozone layer錯(cuò)的原因：原文只說有HOLE可能會(huì)使很多動(dòng)物受傷害，從這點(diǎn)也許可以推出有動(dòng)物生活在受HOLE威脅的地方，但原文沒說有沒有動(dòng)物生活在不受HOLE威脅的地方，故錯(cuò)。

　　C). Some species of animals have eyes that will not suffer any damage when exposed to unfiltered sunlight錯(cuò)的原因：有些人容易選這個(gè)，因?yàn)樵淖詈笠痪湓捳fHOLE會(huì)傷害很多動(dòng)物的眼睛，就是說很多動(dòng)物的眼睛會(huì)受傷害，既然有很多的眼睛受傷害，就有不受傷害的。錯(cuò)。關(guān)鍵是理解原文最后一句話的many。其實(shí)相當(dāng)于some ，表達(dá)的是有的概念，就是可以是1-100。相對(duì)或取非的概念為NONE。就是說它們可以包括全部100。所以有可能全部動(dòng)物眼睛都會(huì)受HOLE傷害。即C可能對(duì)，也可能不對(duì)，這里采用gamt考試技巧中的排除法，不是MUST BE TRUE。故錯(cuò)。

　　我覺得這里不是some的原因，而是全文說could lead to severe eye damage for animals of many species.，由于是答案被原文支持，所以答案一定不能超越原文的界限，因?yàn)樵臑閲?yán)重傷害很多種類的眼睛，我們只能得到?。河行┓N類的眼睛沒有被嚴(yán)重的傷害　可以做絕對(duì)正確的推論，但是說有些種類的眼睛根本沒有被傷害　就不能是mustberight的選項(xiàng)了。所以該選項(xiàng)不能成為正確選項(xiàng)。

　　D). A single wavelength of sunlight can cause severe damage to the eyes of most species of animals錯(cuò)的原因：也是容易選錯(cuò)，因?yàn)樵牡淖詈笠痪湓捈由现形膶?duì)MANY和 MOST(都是很多)的理解。其實(shí)MOST(多數(shù))是指51-100。MANY指1-100。所以不能從MANY推出MOST，從MOST倒可以推出MANY。即原文用MOST，這里采用gamt考試技巧中的排除法，D選項(xiàng)用MANY，則為答案。

　　E). Some wavelengths of sunlight that cause eye damage are more likely to reach the earth&aposs surface where there are holes in the ozone layer than where there are not, 從原文最后兩句話可知完好的臭氧層濾掉了部分有害的光線，則說明有洞時(shí)，有害的光線更易到達(dá)地球。故對(duì)。

　　最后給GMAT入門生強(qiáng)調(diào)一點(diǎn)該問題雖然是MOST STRONGLY SUPPORTED，但不會(huì)出現(xiàn)兩個(gè)能從原文MUST BE得出的答案，因?yàn)樵擃}歸為MUST BE TRUE題型，當(dāng)然不存在支持的程度問題。

　　這就是小編分享的GMAT考試邏輯部分的數(shù)量范圍題，希望考生們復(fù)習(xí)GMAT邏輯的時(shí)候能認(rèn)真對(duì)待。復(fù)習(xí)準(zhǔn)備邏輯還是希望GMAT入門的考生一開始就好好準(zhǔn)備，打好基礎(chǔ)才是王道。

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