2024届高三英语二轮复习外刊阅读热点话题培优练4：科学发现

外刊阅读热点话题 培优练4科学发现 1阅读理解 A Night light from street lamps and phones change the body clock,therefore weakening the body's ability to control blood sugar levels and raising the risk of diabetes by more than a quarter,new research has found. The research was based on almost 100,000 men and women in China who were exposed to artificial light while it was dark outside.Those exposed the most were 28 per cent more likely to develop this condition because of the interference()the light had on the body's production of melatonin(褪黑微素)which affects our sleep patterns. Evidence is growing that 24/7 lifestyles are seriously damaging our health by interfering with the production of melatonin.Long-time exposure to residential outdoor artificial light was linked to a rise in blood sugar levels.It was also associated with poorer function of the cells which control blood sugar. Lead author Dr.Yu Xu,of Ruijin Hospital,Shanghai,said,"Despite over 80 per cent of the world's population being exposed to light pollution at night,this problem has gained limited attention from scientists until recent years." The study estimated more than nine million cases of diabetes in Chinese adults can be attributed to it.A total of 98,658 participants underwent interviews to provide medical, household income,education,way of life,and family history information.Body weight and height were measured to calculate BMI,and blood samples were taken to obtain levels of both fasting and after meal glucose(葡萄镛)， Participants were assigned an average artificial outdoor light exposure level for the location using satellite images.They were divided into five groups based on highest to lowest exposure.On average,for every 42 people living in regions with the most light pollution,there was one more case of diabetes Dr.Xu said,"Exposure to artificial light at night is a common environmental risk factor in modern societies."More than 99 per cent of people in the US and Europe live under light-polluted skies.Earth's 24-h