【OG24-766题】Last year a global disturbance of weather patterns disrupted harvests in many of the world’s important agricultural areas. Worldwide production of soybeans, an important source of protein for people and livestock alike, was not adversely affected, however. Indeed, last year’s soybean crop was actually slightly larger than average. Nevertheless, the weather phenomenon is probably responsible for a recent increase in the world price of soybeans.Which of the following, if true, provides the strongest justification for the attribution of the increase in soybean prices to the weather phenomenon?_mofa留学圈mofaGRE在线题库系统_GRE在线搜题_GRE题库解析_GRE真题机经_GRE课程_GRE培训机构

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Last year a global disturbance of weather patterns disrupted harvests in many of the world’s important agricultural areas. Worldwide production of soybeans, an important source of protein for people and livestock alike, was not adversely affected, however. Indeed, last year’s soybean crop was actually slightly larger than average. Nevertheless, the weather phenomenon is probably responsible for a recent increase in the world price of soybeans.

Which of the following, if true, provides the strongest justification for the attribution of the increase in soybean prices to the weather phenomenon?

Last year’s harvest of anchovies, which provide an important protein source for livestock, was disrupted by the effects of the weather phenomenon. Most countries that produce soybeans for export had above-average harvests of a number of food crops other than soybeans last year. The world price of soybeans also rose several years ago, immediately after an earlier occurrence of a similar global weather disturbance. Heavy rains attributable to the weather phenomenon improved grazing pastures last year, allowing farmers in many parts of the world to reduce their dependence on supplemental feed. Prior to last year, soybean prices had been falling for several years.

正确答案： A

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题干翻译
大豆是人和牲畜重要的蛋白质来源，全球大豆生产未受不利影响，去年大豆收成略高于平均水平。然而，天气现象可能是近期大豆世界价格上涨的原因。 逻辑链
天气现象→大豆价格涨 问题类型
增强题。需要找到能有力证明大豆价格上涨是由天气现象导致的选项。 推理过程
论点是天气现象导致大豆价格上涨，论据是大豆产量未因天气受不利影响但价格上涨。要增强该论点，需找出天气现象与大豆价格上涨之间的关联因素。 选项分析
A选项：去年作为牲畜重要蛋白质来源的凤尾鱼收获因天气现象被扰乱。牲畜蛋白质来源减少，会增加对大豆（也是蛋白质来源）的需求，进而导致大豆价格上涨，建立了天气现象与大豆价格上涨的联系，增强了论点，当选。 B选项：大多数生产出口大豆的国家去年除大豆外的一些粮食作物收成高于平均水平。说的是其他粮食作物收成，与大豆价格上涨和天气现象的关系无关，排除。 C选项：几年前类似全球天气扰动后大豆价格也上涨了。只是过去的类似情况，不能有力证明此次价格上涨就是当前天气现象导致的，增强力度弱，排除。 D选项：天气现象带来的大雨改善了牧场，使农民减少对补充饲料的依赖。这与大豆价格上涨没有直接关联，排除。 E选项：去年之前大豆价格已经下跌了几年。只说明了过去价格走势，无法解释此次因天气现象导致的价格上涨，排除。

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