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.
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
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.
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发表于 2003-10-7 03:23:00
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