2. 职称英语
  3. Throughout history ______ different representations for numbers and for the basi

Throughout history ______ different representations for numbers and for the basi

游客2024-01-03  65
问题 Throughout history ______ different representations for numbers and for the basic process of counting.
选项 A、have been many
B、them have been many
C、many
D、when many
答案 B
解析
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