2. 外语
  3. Even intelligent life on earth couldn’t send radio waves half a century ago. So it would be impossible for any intelligent being

Even intelligent life on earth couldn’t send radio waves half a century ago. So it would be impossible for any intelligent being

admin2013-06-17  51
问题 Even intelligent life on earth couldn’t send radio waves half a century ago. So it would be impossible for any intelligent beings to exist on any other planet at that time.
The chemical structure of a creature from an earth-type planet will very likely be ______.
选项
答案protein-in-water
解析 由第十段可知，作者认为对于生活在和地球环境类似的星球上的生物，其生命的化学基础也很有可能是protein in-water。
转载请注明原文地址:https://kaotiyun.com/show/YQ07777K
0

大学英语四级

相关试题推荐
随机试题
最新回复(0)