与某种职业特点相关的英语故事!急!200单词左右
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与某种职业特点相关的英语故事!急!200单词左右
与某种职业特点相关的英语故事!急!
200单词左右
与某种职业特点相关的英语故事!急!200单词左右
Regardless of the cause, stress sets in motion certain automatic changes in the body that are designed to give it a quick burst of energy. The pattern of changes has been called the "fight-or-flight" response because it most likely evolved from our prehistoric ancestors, who faced daily dangers in their search for food and shelter and had to either flee or do battle. Of course, we no longer face such dangers, but our bodies continue to react as if we did.
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