标题: XDF885-229 [打印本页] 作者: nina23 时间: 2003-10-7 03:23 标题: XDF885-229 229. New hardy varieties of rice show promise of producing high yields without the costly requirements of irrigation and application of commercial fertilizer by earlier high-yielding varieties. (A) requirements of irrigation and application of commercial fertilizer by earlier high-yielding varieties (B) requirements by earlier high-yielding varieties of application of commercial fertilizer and irrigation (C) requirements for application of commercial fertilizer and irrigation of earlier high-yielding varieties (D) application of commercial fertilizer and irrigation that was required by earlier high-yielding varieties (E) irrigation and application of commercial fertilizer that were required by earlier high-yielding varieties
Could you tell me how to choose the answer? I make mistake everytime 作者: braveMBA 时间: 2003-10-7 07:11
这是OG 128，以下是OG解释： Choice E, the best answer, clearly and grammatically expresses the idea that two costly procedures, irrigation and the application of... fertilizer, were required by earlier high-yielding varieties of rice. In A, the placement of by earlier... varieties immediately after application of fertilizer suggests that the varieties applied the fertilizer. In B and D, the phrase application of... fertilizer and irrigation is ambiguous in meaning: it cannot be clearly determined whether applying fertilizer and irrigating are a single operation or two distinct operations. In C, only irrigation--not both irrigation and fertilization--is clearly associated with the earlier... varieties of rice.
