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More and more people are taking their tablet computers to bed to surf the we
More and more people are taking their tablet computers to bed to surf the we
游客
2023-08-20
6
管理
问题
More and more people are taking their tablet computers to bed to surf the web or check Facebook or e-mails before【B1】_____ the light. But using tablets like iPad just before bed can lead to a poor night’s sleep, according to research.
Researchers are warning that the blueish light their screens【B2】______can stop users getting a good night’s sleep. That is because this type of light mimics daylight, convincing the brain that it is still daytime. Blue light【B3】_____ production of a brain chemical called melatonin, which helps us fall sleep. This is because our brains have【B4】_____to be wakeful during daylight hours. By contrast, light which is more orange or red in tone does not restrain melatonin production, perhaps because our brains recognize it as a【B5】_____that the day is ending.
Neurologists have known for years that【B6】_____ screens late in the evening can disrupt sleep. Researchers at the Lighting Research Centre say: "Although turning off devices at night is the【B7】_____ solution, it is recommended that if these devices are used at night displays are dimmed as much as possible and that the time spent on them before bed should be【B8】_____." They drew their conclusions after measuring melatonin levels in 13 volunteers, after they had spent time【B9】_____iPads at full brightness at a distance of 10 inches, for two hours.
However, these studies tend to be【B10】_____of those with chronic sleep disruption, such as long term shift workers, with those who have normal sleep patterns. [br] 【B9】
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答案
viewing
解析
根据空格前的spent可知,空格处应填入动词(词组)的-ing形式。结合录音可填入viewing,意为“看”。
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