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  3. If you want to lose weight, but are not a fan of the gym, the results of a new study could offer a welcome alternative. People w

If you want to lose weight, but are not a fan of the gym, the results of a new study could offer a welcome alternative. People w

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问题     If you want to lose weight, but are not a fan of the gym, the results of a new study could offer a welcome alternative. People who wake up and go to bed at the same time every day are【C1】______than those with irregular sleep patterns, the study found. Researchers studied more than 300 women and found that those with the best—or most consistent—sleeping【C2】______had less body fat.
    The volunteers were【C3】______for body composition, and then were given an activity tracker to【C4】______their movements during the day, and their sleep patterns at night. The. study found that getting【C5】______than 6.5 hours, or more than 8.5 hours, sleep a night is【C6】______higher levels of body fat. Women with more than 90 minutes of variation in sleep and wake time during the week had higher body fat levels than those with less than 60 minutes of variation.
    Exercise science professor Bruce Bailey said【C7】______sleep quality can result in higher body fat【C8】______affecting the hormones levels【C9】______to appetite. He said: "We have these【C10】______clocks and throwing them off and not【C11】______them to get into a pattern does have a(an) 【C12】______on our physiology." He says there are ways to【C13】______sleep quality, such as【C14】______exercise, keeping your bedroom quiet and dark, and using beds only for sleeping. "Sleep is often a casualty of trying to do more and be better and it is often【C15】______," Professor Bailey said.
    Previous research from Temple University revealed that when people get a good night’s sleep they don’t feel so【C16】______They found that when children slept more, they【C17】______134 fewer calories a day and lost weight. These findings were supported by research from the Mayo Clinic in Rochester, Minnesota which also revealed that sleep【C18】______people eat more calories. The researchers studied 17 healthy young people and found that when they slept less they ate more. They believe this is【C19】______when the volunteers were tired, they had higher levels of the hormones leptin and ghrelin, both of which are【C20】______appetite.
【C10】
选项 A、intrinsic
B、alarming
C、inferior
D、internal
答案D
解析 空格前的these作为指示代词，加上空格和其后的clocks一起构成一个词组来指代上文所描述的生理现象。D项internal有“体内的，内部的”之意，和clock构成一个习惯表达，意为“生物钟”，能满足语义需求。
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