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  3. Anxiety is a normal response to physical danger, so it is very useful and very p

Anxiety is a normal response to physical danger, so it is very useful and very p

游客2024-06-16  38
问题 Anxiety is a normal response to physical danger, so it is very useful and very popular among people. [br] 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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