2. 公务员
  3. Using a computer or smartphone at night can cause us to【C1】______on the pounds, new research has revealed. The study found a

Using a computer or smartphone at night can cause us to【C1】______on the pounds, new research has revealed. The study found a

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问题     Using a computer or smartphone at night can cause us to【C1】______on the pounds, new research has revealed.
    The study found a link between blue light【C2】______—blue light is【C3】______by smartphones and tables—and increased hunger. It found that exposure to the light increases hunger levels for several hours and even increases hunger levels【C4】______eating a meal.
    Results of the US study show that blue-enriched light exposure, compared with【C5】______light exposure, was【C6】______with an increase in hunger that began 15 minutes after light onset and was still present almost two hours after the meal. Blue light exposure has also already been shown to decreased【C7】______in the evening, increasing the risk of insomnia.
    Study co-author Ivy Cheung, of Northwestern University in Chicago, said, "A single three-hour exposure to blue-enriched light in the evening【C8】______impacted hunger and glucose metabolism." "These results are important because they suggest that【C9】______environmental light exposure for humans may represent a novel【C10】______of influencing food intake patterns and metabolism."
    The study group【C11】______10 healthy adults with regular sleep and eating schedules who received.
    【C12】______carbohydrate-rich meals. They completed a four-day trial【C13】______ dim light conditions, which involved exposure to less than 20 lux during 16 hours【C14】______and less than three lux during eight hours of sleep. On day three they were exposed to three hours of 260 lux, blue-enriched light starting 10.5 hours after waking up, and the effects were compared with dim light exposure on day two.
    Ms Cheung said more research is needed to determine the【C15】______of action involved in the relationship between light exposure, hunger and metabolism.
【C7】
选项 A、doze
B、nap
C、rest
D、sleepiness
答案D
解析 考查上下文和名词辨析。doze“瞌睡，打盹”，nap“小睡，打盹”，rest“休息”，sleepiness“睡意，瞌睡”。由第三段最后一句可知，蓝光照射会减少夜间的困意，从而增加患上失眠症的风险，故选D。
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