What is stress? Stress is a normal response to difficult or new situations.We usually feel （21）
when we experience changes in our lives.（22）, you might experience stress when you start at a new school.
People experience （23）symptoms ( 症 状) when they are stressed.Physical symptoms（24）a dry mouth and headache.You may also have（25）with sleeping.There are （26） emotional (情绪的) symptoms such as feeling sad, worried or anxious.
Stress is bad when we are unable to deal with it.（27）if we have a positive attitude, stress can give us extra energy and make us perform better.
People have different ways of dealing with stress:
Actor Chris Evans has said that he deals with stress （28）talking about it with someone.
Singer Adele has often felt stressed before going on stage (舞台).She manages with it by （29）she is another person, someone who is stronger and deals well with stressful situations.
Many people say that simply relaxing and being calm can（30）.But perhaps the best way for dealing with stress is to be in control—don’t let the situation control you.

22.A.For example  B.In fact  C.Thanks to  D.According to