D.people do not think stress is as harmful as it was before.

　　4.The pronoun “it” at the end of the passage refers back to __.

　　A.ill health

　　B.exposure

　　C.reaction

　　D.stress.

　　5.What is writer’s attitude to stress according to the passage?

　　A.Stress as well as relaxation is essential for a healthy mind and body.

　　B.Stress produces both positive and negative effects on people.

　　C.Stress should not be eliminated completely from the life.

　　D.People usually work better under stress if they are healthy.

　　第27篇答案：BDCDB