Forget milky drinks, hot water bottles or curling up with a good book. The real secret to a good night's sleep may be where you sit at work. Not only can the stress of work leave employees【C1】______and turning, but sitting too far from a window can knock 46 minutes【C2】______a normal night's sleep. Researchers found that workers forced to【C3】______in windowless rooms had a poorer quality of life and more irregular sleep patterns than those【C4】______daylight. The findings, published in the Journal of Clinical Sleep Medicine,【C5】______the working environment may be【C6】______to setting the body's own internal clock. Researchers say【C7】______designed offices could boost the physical and mental health of workers. "We suggest that architectural design of office environments should place more【C8】______on sufficient daylight exposure for workers in order to【C9】______health and well-being," said Dr Ivy Cheung of the Department of Neurology, Northwestern University, Chicago. "Office workers with more light exposure at the work place also【C10】______have better sleep quality, more physical activity and a better quality of life." A sunny day is equivalent to about 10,000 lux or higher of light. However indoor office lighting【C11】______provides only about 300 to 500 lux. One【C12】______three British people suffers from poor sleep, with stress, computers and taking work home often【C13】______for the shortage of quality sleep. 【C14】______the cost of all those sleepless nights is more than just bad moods and a【C15】______of focus. Regular poor sleep【C16】______the risk of serious medical conditions like obesity, heart and diabetes—and can even shorten life expectancy. 【C17】______exposure to natural daylight is known to be important for governing the body's the built-in clock which【C18】______our sleeping and waking patterns. Independent sleep expert Dr Neil Stanley said the body needs exposure to daylight to keeps its sleeping patterns【C19】______Light is essentially the thing that tells our bodies to be【C20】______and dark tells them to go to sleep.
单选题
【C1】
【正确答案】
B
【答案解析】解析：本句承接第一段，进一步讨论在办公室所坐的位置和睡眠质量的关系。空格所在处意为“工作压力使人……翻来翻去”，可知工作压力让人睡不好觉，故选B项tossing“翻来覆去”。toss and turn为惯用表达，意为“辗转难眠”。
单选题
【C2】
【正确答案】
C
【答案解析】解析：从下句中workers forced…in windowless rooms had a poorer quality…(在无窗的房间里工作的员工睡眠魔量差)可推出，坐离窗太远的员工的睡眠质量也会较差。故选C项off。knock off“减少”，此处指比正常睡眠少了46分钟。