GMAT OG 2019语法新题解析709

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709. Over the past ten years cultivated sunflowers have become a major commercial crop, second only to soybeans as a source of vegetable oil.

A. second only to soybeans as a source of vegetable oil

B. second in importance to soybeans only as a source of vegetable oil

C. being second in importance only to soybeans as a source of vegetable oil

D. which, as a source of vegetable oil, is only second to soybeans

E. as a source of vegetable oil only second to soybeans

解析：

在过去十年中，栽培的向日葵已经成为主要的商业作物，仅次于大豆作为植物油的来源。

A选项second to固定搭配表示“仅次于....”,only修饰second

B选项in importance没有必要，会很啰嗦。 only放在这里，语义变为“仅仅作为植物油的来源”，语义发生变化

C选项in importance，being都没有必要，会很啰嗦。second to可直接修饰cultivated sunflowers。

D选项which是定语从句，which指代的是commercial crop，逻辑不合理

E选项second to修饰vegetable oil，逻辑不合理

答案：A