[問題] gwd-3-40

看板GMAT (GMAT入學考試)作者chenemily (天天保持好心情)時間16年前 (2009/09/10 03:24)推噓0(0推 0噓 0→)

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Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions. Which of the following is an assumption on which the argument depends? A.There are no types of vegetation on Tufe Island that are known to benefit from dry conditions. B.There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today. C.The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago. D.The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment. E.The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations 請問一下答案c取非之後哪裡有反駁看不太出來 c取非是說因為環境的改變使得花比200年前高40cm 題目結論說 island比peninsula乾燥所以毫無疑問的歸因於環境條件的改變有反駁嗎??? 謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 71.100.137.109