B.class
C.audience
D.friends
37.A.convinced
B.reminded
C.proved
D.showed
38.A.performanceB.experience
C.situationD.health
39.A.please
B.take
C.give
D.accept
40.A.chanceB.possibility
C.intentionD.difficulty
Ⅳ.阅读理解
the online journal Genome Biology suggests that loneliness actually affects the very core of our bodies—our genes.
In a small population of patients,researchers surveyed more than 20,000 genes using DNA skills to compare how the genes of lonely and nonlonely individuals express themselves in molecular (分子) processes and,ultimately,in personal health.They found that gene expression is different at 209 sites in chronically lonely people and that many of those changes fit a pattern of elevated immune activation,inflammation (炎症),and depressed response to infection.“We now have a molecular framework for understanding the relationship between social experience and physical health,”explains the study’s lead author,Steve Cole.
The study found that loneliness decreases the response of some body receptors,cutting off the immune control and anti-inflammatory effects of the stress-related hormone that also helps regulate the conversion of carbohydrates (碳水化合物) to energy.The depressed response of the stress-related hormone concurs with the known effects of loneliness and provides a potential target for treatment.
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