※ 引述《mimiwei955 (霖)》之铭言： 我说的就是这题 56. (27418-!-item-!-188;#058&003510) Unlike crested wheatgrass, an alien species from Siberia that forms only shallow roots and produces tall above-ground shoots, native North American grasses develop an extensive root system, allowing for greater enrichment of the soil, but do not grow to be very tall. (A) native North American grasses develop an extensive root system, allowing for greater enrichment of the soil, but do not grow to be very (B) native North American grasses develop an extensive root system, which allows for their greater enrichment of the soil, but without growing to be that 这题也是类似74题的结构 A比较好的原因是因为B会造成which allows...but 的歧义 虽然我也分不清用分词好还是用从句好 大家讨论一下~~~ (C) the root system of native North American grasses is extensive, allowing for greater enrichment of the soil, but they do not grow to be very (D) the root system of native North American grasses is more extensive, allowing for the greater enrichment of the soil, but these grasses do not grow to be very (E) the extensiveness of the root system of native North American grasses allows for their greater enrichment of the soil, but they do not grow to be that : 经询问 : 此题答案应该是"C" : CD版PP破解答案给D : 大家写到这题注意一下 : 74. (28503-!-item-!-188;#058&003635) : Paleontologist Stephen Jay Gould has argued that many biological traits are : not the products of natural selection, favored due to their enhancement of : reproduction or survival, but that they are simply random by-products of : other evolutionary developments. : (A) due to their enhancement of reproduction or survival, but that they are : (B) due to the reproduction or survival they enhance, but they are : (C) because they enhance reproduction or survival, but : (D) because they enhance reproduction or survival, but are : (E) because of enhancing reproduction or survival, but are --

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