Conservationist: The population of a certainwildflower is so small that the species is headed for extinction. However, thiswildflower can cross-pollinate with a closely related domesticated daisy,producing viable seeds. Such cross-pollination could result in a significantpopulation of wildflower-daisy hybrids. The daisy should therefore beintroduced into the wildflower’s range, since although the hybrid would differmarkedly from the wildflower, hybridization is the only means of preventingtotal loss of the wildflower in its range.
34. Which one of the following is anassumption on which the conservationist’s reasoning depends?(A) The wildflower currently reproduces onlyby forming seeds. (B) The domesticated daisy was bred from wildplants that once grew in the wildflower’s range. (C) Increasing the population of thewildflower will also expand its range. (D) Wildflower-daisy hybrids will be able toreproduce. (E) The domesticated daisywill cross-pollinate with any daisy like plant. 答案是D，不过我觉得E也是一个assumption啊，原文说了是保持range，但详解上说C无关？？？ 求解释！谢谢！
To prevent something from dying in its own territory does not mean to EXPAND the same thing to a bigger territory than before. So the argument does not require the expansion of the wild flower. Rather, the argument requires the extention of the genetic codes of the wild flower.
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发表于 2011-2-19 23:25:43
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