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Even intelligent life on earth couldn’t send radio waves half a century ago. So
Even intelligent life on earth couldn’t send radio waves half a century ago. So
游客
2023-07-11
49
管理
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] The author says that silicones might replace protein on hot planets because silicones may remain stable under very high temperatures.
选项
A、Y
B、N
C、NG
答案
A
解析
由倒数第二段中的“There are molecules called silicones which could conceivably be built into complex structures able to survive high temperatures”及前面的“it could scarcely be based on ordinary protein”可知既然普通的蛋白质不能经受住高温,那么作者推断硅酮有可能取而代之。
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