2. 外语
  3. PASSAGE THREE What has been regarded as the indicator of potential life on other planets?

PASSAGE THREE What has been regarded as the indicator of potential life on other planets?

admin2016-12-06  53
问题 PASSAGE THREE
What has been regarded as the indicator of potential life on other planets?
选项
答案Water．
解析 文章最后两段都表明，人类从自身的生理机制出发，相信生命之源在于水，科学家之所有到火星上去寻找生命的痕迹，是因为他们在火星表面发现了水的痕迹，可见，一直以来，“水”就是生命存在的指标。
转载请注明原文地址:https://kaotiyun.com/show/2PJK777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)