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The flag, which is made up of a red band over a white one, is based on a nationa

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The flag, which is made up of a red band over a white one, is based on a nationa

 The flag, which is made up of a red band over a white one, is based on a national flag that _____ back to the 13th century, which had nine red and white stripes.

  A. has dated   B. was dated   C. dates    D. dated

试题答案

D