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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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* I wake up every morning on 5:00 am, she has been remaining this way for three months.
* I wake up every moring on 5:00 am, she has been doing in this way for three months.
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