2024届高三英语一轮复习外刊时文改编语法填空（2）

【原创】2024年高中英语基础素质提升 外刊时文改编语法填空（2） Sleeping less than five hours a night can raise depression risk, study suggests Consistently short sleep duration more likely to precede symptoms than inverse, genetic data reveal Sleeping less 1 five hours a night could raise the risk of developing symptoms of depression, research 2 （suggest）. The link 3 poor sleep and mental ill health is well known, but it has been unclear 4 problem tends to come first. Now scientists have found evidence that consistent short sleep at night can be a precursor to developing 5 （depress） symptoms. “We have this chicken or egg scenario between suboptimal sleep duration and depression. They frequently co-occur, but which comes first is largely 6 （resolve）. Using genetic 7 （suspect） to disease we determined that sleep likely 8 （precede） depressive symptoms, rather than the inverse,” said Odessa Hamilton, a PhD candidate at UCL and first author of the research. The researchers looked 9 genetic and health data from 7,146 people recruited by the English Longitudinal Study of Ageing (ELSA). Both sleep duration and depression are partly 10 （inherit）. Earlier research shows that depression is about 35% heritable, and that genetic differences account 11 40% of the variance in sleep duration. When the study’s subjects 12 （track） over time, researchers found that people who were genetically predisposed（有倾向的）to short sleep (less than five hours a night) were more likely 13 （develop）depressive symptoms 14 four to 12 years, 15 that people more genetically predisposed to depression were not more likely to suffer from problems sleeping. Overall, the 16 （participate）in the study had 17 average of seven hours’ sleep a night. More than 10% slept for less than five hours a night at the start of the study period, rising to more than 15% 18 the end of the study period, and the proportion of participants classed as having depressive symptom