单项选择题

"My job is killing me." Who among us hasn’t issued that complaint at least once Now a new study suggests that your dramatic complaint may (62) some scientific truth.
The 20-year study, by researchers at Tel Aviv University, (63) to examine the relationship between the workplace and a person’s risk of death. Researchers (64) 820 adults who had undergone a (65) physical exam at a health clinic in 1988, and then interviewed them (66) detail about their workplace conditions—asking how nice their colleagues were, whether their boss was supportive and how much (67) they had in their position.
The participants (68) in age from 25 to 65 at the start of the study and worked in a variety of (69) , including finance, health care, manufacturing and insurance. The researchers (70) the participants through their medical records: by the study’s conclusion in 2008, 53 people had died—and they were significantly more likely than those who survived to report having a (71) work environment.
People who reported having little or no (72) support from their co-workers were 2.4 times more likely to die (73) the course of the study than those who said they had close, supportive (74) with their workmates. Interestingly, the risk of death was (75) only to people’s perceptions of their coworkers, not their bosses. People who reported negative relationships with their supervisors were (76) likely to die than others.
The study was observational, (77) it could not determine whether toxic workplace environments caused death, only that it was (78) with the risk. But the findings add to the evidence (79) having a supportive social network decreases stress and helps (80) good health. On the other hand, being exposed (81) chronic stress contributes to depression, ill health and death.