单选题：They believe that the merchants had conspired to undermine t

题目内容：

They believe that the merchants had conspired to undermine the nation's economic independence. A．uphold
B．minimize
C．weaken
D．postpone

参考答案：

答案解析：

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根据材料，完成题。The Tough Grass that Sweetens Our LivesSugar cane was once a wild grass

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