For years，you've been told that stress can be deadly and is something to be avoided.Therefore，an anxious situation is often accompanied by a sense of fear.However，recent studies suggest that stress-related harmful effects on your health are not unavoidable.
   One study followed 30，000 people over eight years and measured their stress levels.Those who believed that stress is harmful died at a higher rate than those who were under stress but didn't acknowledge the so-called negative effects.The latter group was healthier，and many of them lived long，happy lives.
   Stressful feelings start out in a small region of the brain that affects how people feel emotions，especially fear.The small region is very sensitive to possible threats.When it senses danger，it alerts the brain，and feelings of fear or stress can result.These feelings give people a warning message when they need to pay attention and when they need to take action.For instance，when the sight of a speeding car triggers（觸發(fā)）the region to release a lightning-fast message，we know immediately to move out of the way!
   Another study carried by Health psychologist Dr.McGonigal found a link between stress and the amount of sympathy people showed to others.Researchers tracked 1，000 adults，their descriptions of the level of stress in their lives and the amount of time spent helping others.With each major stressful event，such as a family tragedy or financial crisis，the risk of dying increased by 30 percent.But for the group who spent time helping others，there was no increase in stress-related deaths，even for those who had faced their own personal tragedies.According to Dr.McGonigal，"Chasing meaning is better for your health than trying to avoid discomfort.Go after what it is that creates meaning in your life and then trust yourself to handle the stress that follows."

（1）What does the study in paragraph 2 suggest？

C

C

A．Stress caused many deaths over eight years.
B．Stress won't hurt you if you don't acknowledge its presence.
C．It is not the stress but our response to it that creates problems.
D．Those without stress usually live long and happy lives.
（2）What do we know about stress from paragraph 3？

D

D

A．Stress is harmful to the brain.
B．Stress can cause danger.
C．Stress can be a threat to us.
D．Stress can lead to timely action.
（3）What can we learn from Dr.McGonigal's study？

D

D

A．People without stress spend more time caring others.
B．Stress often causes a family tragedy or financial crisis.
C．Stress can be avoided by helping others.
D．People chasing meaning in life suffer less from stress.
（4）Which may be the best title for the text？

A

A

A．Stress Is Not Your Enemy.
B．Man Can Conquer Stress.
C．We Need Remove Stress.
D．Stress Is Nearly Harmless