(原文恕刪) 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 這題我乍看也會想選 D, 因為 that子句中的 are not..., but are... 但是再看一遍之後，我比較同意原po的說法， 1) not..., but... 平衡！！ 所以 not + N, but 後面也要直接加 N. 2) 而且"逗點" 也是一個線索，如果是because子句中的兩個動詞並列, 那麼在but前面不能有逗點, 逗點表示把favored之後的插入句隔出來 3) 如果說是 reproduction(N1) or survival(N2), but N3 的三名詞並列， 就更說不通了, 名詞並列不可能有or又有but 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 (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 這題也是 ", but" 平衡啊， B 選項，"逗點but" 把 which子句隔開了，所以不可能跟allows平衡， 問題出在 but without growing 和 main Cl.中的 develop 不平衡，所以錯。 A 選項則完整表達 main V1 (develop), but main V2 (do not grow) 的平衡。 且 which關代中用現在式表達的定語，通常會用 Ving phrase 來代替。 而 Ving phrase 修飾 the nearest noun 前面不會有逗點，這邊是因為插入句的關係， 必需要把 Ving phrase 隔開。 my opinion~~ 參考參考囉... ^^ --

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