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

admin2017-12-05  49
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.
【C13】
选项 A、in
B、on
C、under
D、for
答案C
解析 考查介词辨析。他们在昏暗光线环境下完成了一个为期四天的实验。under conditions意为“在……情况下”。in condition意为“处于健康状况”，on the condition意为“以……为条件”，for不与condition连用。故选C。
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