2. 外语
  3. A. Significance of testing techniques for sampling microbes in the deep ice sheet B. special features of lake Vida C. later expe

A. Significance of testing techniques for sampling microbes in the deep ice sheet B. special features of lake Vida C. later expe

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问题 A. Significance of testing techniques for sampling microbes in the deep ice sheet
B. special features of lake Vida
C. later expedition on mars
D. 2004 revisit planned for collecting lake water specimen
E. Antarctic frozen life sampled and revived   
F. Accidental discovery of ice-sealed lake water Antarctica
*
选项
答案C
解析 选择C(可能比在39英尺的冰层下收集的生命物质在时间上更久远些)的依据参见第 3段的第1句。
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