2. 外语
  3. The unit of measurement known as foot has originally based on the average size of the human foot.

The unit of measurement known as foot has originally based on the average size of the human foot.

admin2007-10-13  23
问题 The unit of measurement known as foot has originally based on the average size of the human foot.
选项 A、measurement
B、has
C、size
D、foot
答案B
解析 应改为was。be based on：以……为基础。
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