(单选题)

One of the reasons why the long-term trend of prices has been downwards is that （）。

A.technological innovation emerge

B.consumption will drop

C.new sources are always becoming available

D.new farming and crop technology can lead to overproduction

参考答案：C

参考解析：

根据long-term trend of prices has been downwards定位至第四段The same is true for food. Prices fluctuate…when they rise, it takes some time before new sources of supply become available. But they always do, assisted by new farming and crop technology. The long-term trend has been downwards.可知长期价格下降的原因在于经常会找到新供给来源。选项A：科技创新出现；选项B：消费下降；选项C：经常会找到可替代来源；选项D：全新农作物科技带来的生产过剩。根据第四段可知正确答案是选项C。

知识点：细节题英语阅读理解金融业务模考估分

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One of the reasons why the long-term trend of prices has been downwards is that （ ）。

One of the reasons why the long-term trend of prices has been downwards is that （）。