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题库 / OG2017V-SC-253
Under high pressure and intense heat, graphite, the most stable form of pure carbon, changes into the substance commonly referred to as diamond and remaining this way whether or not the heat and pressure are removed.
remaining this way whether or not
remaining like that even as
remaining as such whether or not
remains in this way although
remains thus even when
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thus用法同so, 和this, that不同，可以指代前文；本文句意是让步，所以although不好
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