单选题 Since 1970, millions of enthusiasts ＿＿＿＿＿＿＿＿ a substance which they believe can cure the common cold ---- Vitamin C. 的答案
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题目内容：
Since 1970, millions of enthusiasts ＿＿＿＿＿＿＿＿ a substance which they believe can cure the common cold ---- Vitamin C.
题目选项
参考答案价值：100%
题目内容：
Since 1970, millions of enthusiasts ＿＿＿＿＿＿＿＿ a substance which they believe can cure the common cold ---- Vitamin C.
题目选项
参考答案价值：100%
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