Acute reaction to stress的用法和样例：
- Anxiety is a normal reaction to stress.
- As you learned previously,the negative reaction to stress may appear in physical symptoms such as a headache,tense muscles,or upset stomach.
- Relaxation activities help to reverse the physical reactions to stress.
- If you are under control when the child is misbehaving, you will be able to distinguish between willful misbehavior and reaction to stress.