问题
选择题
At minus 130°C, a living cell can be ________ for a thousand years.[ ]
A. spared
B. protected
C. preserved
D. developed
答案
答案：C
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At minus 130°C, a living cell can be ________ for a thousand years.[ ]
A. spared
B. protected
C. preserved
D. developed
答案：C