The flag, a simple design of red over white, has a long history that the 13th century. ——青夏教育精英家教网—

摘要： The flag, a simple design of red over white, has a long history that the 13th century. A. date back to B. dates back to C. dated back to D. dated from

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The flag, a simple design of red over white, has a long history that ________ the 13^th century．