Infrequent periods of stress pose little risk. But when stressful situations continue without being 11 ) _, the body is kept in a constantly active state , which increases the harm to biological systems . Finally, the body becomes 12 ) _ and its ability to repair and defend itself can be seriously 13 ) _ . As the body’s self-defense power 14 )__ away , the risk of injury or disease increases. In the past 20 years, many studies have 15 ) __the relationship between job stress and a variety of illnesses . Mood and sleep 16 )___ , upset stomach , and headache are examples of stress-related problems that are quick to develop and are commonly seen in these studies . These early 17 ) _ of job stress are usually easy to recognize . But the effects of job stress on chronic ( 慢性的 ) diseases are more difficult to 18 )___ because chronic diseases take a long time to develop and can be influenced by many factors other than stress. Nevertheless, 19) _ is rapidly increasing to suggest that stress plays a ( n ) 20 ) _ role in several types of chronic health problems - especially cardiovascular ( 心血管的 ) disease , and psychological disorders.

A ) indications   B ) expressions  C ) disturbances  D ) evidence  E ) conflicted 

F ) compromised  G ) resolved  H ) ensured  l ) indicated  J ) erodes  K ) identify      L ) justify  M ) involved  N ) exhausted  O ) significant 

Stress sets off an alarm in the brain and the nervous system is aroused to sharpen the senses, quicken the pulse, deepen breathing and tense the muscles. 

Infrequent periods of stress pose little risk. But when stressful situations continue without being 11 ) _, the body is kept in a constantly active state , which increases the harm to biological systems . Finally, the body becomes 12 ) _ and its ability to repair and defend itself can be seriously 13 ) _ . As the body’s self-defense power 14 )__ away , the risk of injury or disease increases. 

In the past 20 years, many studies have 15 ) __the relationship between job stress and a variety of illnesses . Mood and sleep 16 )___ , upset stomach , and headache are examples of stress-related problems that are quick to develop and are commonly seen in these studies . These early 17 ) _ of job stress are usually easy to recognize . But the effects of job stress on chronic ( 慢性的 ) diseases are more difficult to 18 )___ because chronic diseases take a long time to develop and can be influenced by many factors other than stress. Nevertheless, 19) _ is rapidly increasing to suggest that stress plays a ( n ) 20 ) _ role in several types of chronic health problems - especially cardiovascular ( 心血管的 ) disease , and psychological disorders.