2021년 수능특강라이트 3강 분석 썸네일형 리스트형 2021년 수능특강라이트 3강 E3,4(기출+) Melatonin helps regulate the timing of when sleep occurs by systemically signaling darkness throughout the organism. But melatonin has little influence on the generation of sleep itself: a mistaken assumption that many people hold. To make clear this distinction, think of sleep as the Olympic 100-meter race. Melatonin is the voice of the timing official that says "Runners, on your mark," and the.. 더보기 2021년 수능특강라이트 3강 E1,2(기출+) If there is one recent change that stands out in student behaviour, it is the decline in the willingness to read for extended periods of time. The reason is simply the competition reading faces. Until the mid-1980s, the only competition school really had was television. We still lived in a world that supported print literacy. There was still a collective memory about the experiences reading offe.. 더보기 이전 1 다음