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In 1796 investigations into the chemical nature of diamond concluded ______a for
In 1796 investigations into the chemical nature of diamond concluded ______a for
游客
2024-01-05
80
管理
问题
In 1796 investigations into the chemical nature of diamond concluded ______a form of pure carbon.
选项
A、that it
B、is it
C、that it is
D、is that
答案
C
解析
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