PASSAGE THREE [br] What has been regarded as the indicator of potential life on

游客2023-10-31  30

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

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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。
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