Since the Great Depression the United States gove
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Since the Great Depression,the United States government has protected farmers from damaging drops in grain prices.
A:slight B:surprising C:sudden D:harmful
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答案：D
本句意思：从大萧条以来，美国政府在粮食价格下降时对农民采取保护性措施，以防他们受到损害。damaging意为“破坏的”; slight意为“轻微的”; surprising意为“令人惊讶的”; sudden意为“突然的”; harmful意为“破坏的”，最符合题意。