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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
admin
2013-06-17
37
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.
In terms of chemical structure, the passage mainly discusses three substances. They are ______.
选项
答案
protein,ammonia and silicone
解析
通读全文可知作者认为根据温度的不同,生物的化学基础就有所不同。它们分别是适于低温的“氨”,适于高温的“硅酮”和介于中间的“蛋白质”。
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0
大学英语四级
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一、注意事项1.申论考试与传统的作文考试不同。是分析驾驭材料的能力与表达能力并重的考试。2.作答参考时限:阅读资料40分钟.作答110分钟。3.仔细阅读给定的资料。按照后面提出的“作答要求”依次作答在答题纸指定位置。4.答题时请认准题号。避免答错位
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