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  3. What’s the main finding of the research? [originaltext]From artificial lights to

What’s the main finding of the research? [originaltext]From artificial lights to

游客2024-08-13  11
问题 What’s the main finding of the research?
From artificial lights to late-night TV and now our smartphones, modern life is often blamed for ruining our sleep.But this study suggests our ancestors didn’t get any more sleep than we do.The researchers monitored traditional societies in Namibia, Tanzania and Bolivia, where people live like ancient hunter-gatherers once did.They found they slept on average six and a half hours a night.Surprisingly, natural light didn’t have as big an influence as was thought.Most people fell asleep hours after sunset.
选项 A、Our ancestors got much more sleep than we do now.
B、Modern life with smartphones and TV is not healthy.
C、Ancient hunter-gatherers fell asleep right alter the sunset.
D、It is normal to sleep on average six and a half hours a night.
答案 D
解析 根据新闻定位句可知,研究表明我们的祖先的睡眠时间并不比我们多,他们平均每晚睡6.5小时。也就是说，一晚上平均睡眠6.5小时是正常的时长。故选D。
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