Lack of sleep makes you gain weight and raises your risk for heart disease and diabetes, apart from resulting in【C1】______vision

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问题     Lack of sleep makes you gain weight and raises your risk for heart disease and diabetes, apart from resulting in【C1】______vision and questionable decision. Researchers have known for a while that sleep【C2】______tends to lead to overeating. And several studies have suggested that staying up all night or even just cutting back by a couple of hours makes people【C3】______to the calls of fast food, pizza and candy. Short sleep affects hormones that influence hunger, experts say, and the brain’s reward center becomes【C4】______active, drawing you to the carbs and fat. Researchers don’t know the exact point of sleeplessness that【C5】______one’s want for pizza or chocolate or other kinds of food. "There are【C6】______individual differences," says Jonathan Wisor, a sleep scientist at Washington State University.
    Recent research has confirmed that a pattern of insufficient sleep raises your risk for overweight and diabetes, too. Experts suspect that the results could【C7】______to anyone who works long hours or spends a lot of time staring at a smartphonet just before bed, and to people who【C8】______from insomnia or sleep disorder.
    If you assume you’re safe because study conditions tend to be fairly extreme, you had better think again. People who regularly get less than the【C9】______amount of sleep have been observed to eat 200 to 500 more calories per day than people who do not. Should you【C10】______time for a workout while being in lack of sleep? No. When you drop below 6.5 or six hours of sleep, you need sleep more than you need to exercise.
    A)vulnerable B)deprivation C)optimum D)precaution
    E)squeeze F)triggers G)remarkably H)apply
    I)suffer J)regularly K)tremendous L)transcends
    M)blurred N)transient O)recruit
【C9】

选项

答案C

解析 空格需填入名词、形容词或分词作amount的定语。根据句中的“多吃200-500以上卡路里”可知,此处是说这些人经常没有适量的睡眠,optimum“最合适的”符合句意。
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