Although there is no cure for the common cold, doctors believe that vitamins can help prevent them. Many doctors recommend vitam

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问题 Although there is no cure for the common cold, doctors believe that vitamins can help prevent them. Many doctors recommend vitamin C to prevent colds, and some doctors suggest that you take large amounts when you begin to get colds symptoms. Yet it is

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答案prevent colds

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本试题收录于：大学英语三级B级题库大学英语三级分类