OG-128

new hardy varieties of rice show promise of producing high yields without the costly requirements of irragtion and application of commercial fertilizer by earlier high-yielding varieties.

A requirements of irragtion and application of commercial fertilizer by earlier high-yielding varieties.

B requirements by eariler higher-yeilding varieties of application of commercial fertilizer and irragation.

C requirements for application of commercial fertilzer and irragation of earlier higher-yielding varieties.

D application of commercial fertilizer and irragation that was required by earlier higher-yielding varieties.

E irragation and application of commercial fertilizer that were required by earlier high-yielding varieties.

答案是E

我想问D为什么错？ application of A and B that was ..... 中was 与 application 主谓一致 that 跳跃修饰有什么不妥呢？ 

我帮LZ改了一下 题目。一下是CD上前人的讨论，LZ看看肯定有满意的答案

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