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The author thinks sleep is a funny thing as it is necessary for human life. While awake, people can produce ______ waves in the
The author thinks sleep is a funny thing as it is necessary for human life. While awake, people can produce ______ waves in the
admin
2013-01-22
72
问题
The author thinks sleep is a funny thing as it is necessary for human life.
While awake, people can produce ______ waves in their brains.
选项
答案
alpha or beta
解析
第3个小标题Sleep and the Brain部分的第1段第2、3句:A waking and relaxed person generates alpha waves,which are consistent vibrations at about 10 cycles per second.An alert person generates beta waves,which are about twice as fast.空白处需要waves的修饰成分。原文中的waking and relaxed和alert是awake的两个方面,故醒着时所产生的脑电波是alpha波或beta波。
转载请注明原文地址:https://www.kaotiyun.com/show/AQI7777K
0
大学英语六级
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