2. 外语
  3. Anxiety is a normal response to physical danger, so it is very useful and very popular among people. The way a lot of researche

Anxiety is a normal response to physical danger, so it is very useful and very popular among people. The way a lot of researche

admin2009-04-23  47
问题 Anxiety is a normal response to physical danger, so it is very useful and very popular among people.
The way a lot of researchers use to study anxiety is by ______.
选项
答案scaring rats and cutting them open
解析 定位到文章第七段前两句，可知“研究者通过吓唬老鼠，并把它们的大脑切开来进行研究。”
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大学英语六级

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