Even intelligent life on earth couldn’t send radio waves half a century ago. So

游客2023-07-11  26

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. [br] Jupiter and Saturn are com worlds of the solar system.

选项 A、Y
B、N
C、NG

答案 A

解析 由倒数第四段的第一句话可知木星和土星是太阳系中的冷行星,此判断正确。
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