第一组2阅读理解+1完形填空

第一组第一组2 2 阅读理解＋阅读理解＋1 1 完形填空完形填空 (限时：30 分钟) Ⅰ.阅读理解 A A (2019·河北衡中质检)Strangely，scientists still haven’t figured out why sleep is so important for our survival.But they do know that not getting enough sleep prejudices our health.Now，a study of Northwestern University proves that having a light on while sleeping can raise your risk of diabetes(糖尿病)． For the study，researchers recruited 20 healthy adult volunteers (ages 18 to 40)．The volunteers spent two nights and three days at the lab: The first night， they slept in total darkness; the second night ，half of them slept in the dark again while the other half slept with a bright overhead light on.While the volunteers slept，the researchers tracked the volunteers’ vital signs，brain wave activity，and took hourly blood samples.In the morning，they conducted glucose tolerance (葡萄糖耐量) tests on the volunteers. Remarkably，just sleeping under a bright light increased insulin (胰岛素) resistance， a phenomenon that insulin can’t play its normal role.When insulin can’t do its job well，the body struggles to process sugar，which is one of the reasons for getting diabetes.“Our findings show that a single night of light exposure during sleep greatly impacts measures of insulin resistance，” said lead author Ivy Cheung Mason. “Previous research has linked poor sleep toa higher risk of depression and breast cancer.Now our findings add diseases such as diabetes to the list.Sleep disturbances affect more than 25 per cent of the general population and up to 50 per cent of older adults.Improving sleep in adults represents a much-needed approach to the prevention and treatment of type 2 diabetes.” Although this is primary research，it does support the idea that you should avoid falling asleep on the sofa and spending part—or most—of the night with the lights and the TV on. 【语篇解读】 本文是一篇说明文， 作者讲述了在黑暗中睡觉对健康的重要性以 及开着灯睡觉容易引起糖尿病的情况。 1．What may insulin resistance lead to? A．The problem of poor sleep. B．The lack of insulin in the body. C．The risk of suffering from diabetes. D．The decrease of the blood sugar level in the body. 答案C[细节理解题。依据第三段中的“just sleeping under a bright light.which is one of the reasons for getting diabetes”可知，身体出现抗胰岛素性时，胰岛素不 能发挥正常功能，身体就会很难消耗糖分，这样就会增加患糖尿病的风险。故选 C 项。] 2．Which of the following can we infer according to Ivy Cheung Mason? A．Improving sleep can prevent all diabetes. B．Half of the population have got sleep problems. C．The elderly attach much more importance to a good sleep. D．Depression and diabetes can result from poor sleep. 答案D[推理判断题。 依据第四段中的“Previous research has linked.diabetes to the list”可知，糟糕的睡眠会导致人们患抑郁症和乳腺癌的风险增加，现在新的 研究表明，睡眠不佳还会导致患糖尿病的风险增加，由此可知，抑郁症和糖尿病 均可由睡眠问题导致。] 3．What does the author do in the last paragraph? A．Prove his idea. B．Offer a tip. C．Introduce another topic. D．Give practical solutions. 答案B[推理判断题。根据最后一段的内容“Although this is primary research.and the TV on ”可知，这项研究确实证实了这个观点：人们应该避免在 沙发上入睡，避免(入睡时)让灯和电视开半夜，或是大半夜。因此作者在本段给 读者提出了一项建议，故选 B 项。] 4．Which can serve as the best title for the passage? A．W