分析句子可知,此处为非谓语动词作定语,sleep与need之间是被动关系,故用过去分词作定语,故填needed。(2)which.考查定语从句。句意:所需的睡眠量取决于人的年龄和睡眠条件。此处引导定语从句,先行词为conditions,在从句中作介词in的宾语,故填which。(3)hours.考查可数名词的复数。句意:年轻人可能比老年人需要更多的...
3Everyone___to have at least eight___sleep at nightA.needs,hour's B.need,hours' C.needed,hour's D.needs,hours' 4【题目】Everyoneto have at least eight __sleep at night.A. needs, hour'sB. need, hours'C. needed, hour'sD. needs, hours' 5Everyone to have at least eight sl...
According tothe Centers for Disease Control and Prevention (CDC), more than a third of Americans aren’t getting the recommended 7-9 hours of sleep needed for our overall health and well-being. Some of this might be a result of poor sleep hygiene. ...
sleep, although some people may need as few as 5 hours or as many as 10 hours of sleep each night. Teenagers may need about 9 hours of sleep per night. For children, 10 or more hours should be needed every day. Unfortunately, nowadays many students don’t have enough time to sleep. ...
3.To spend (time) at a location or job:I put in eight hours at the office. 4.To plant:We put in 20 rows of pine trees. 5.To make (a telephone call):I put in a call to the school principal. 6.To apply:put in for early retirement. ...
分析可知the amount of sleep与need之间为动宾关系,所以用need的过去分词形式作定语修饰the amount of sleep,表示“所需的睡眠时间”。故填needed。 【2】which 考查定语从句。句意:个人所需的睡眠时间取决于他的年龄及睡觉的环境。分析可知介词+which/whom引导定语从句,the conditions为先行词,所以选择which. 定语...
The amount of sleep needed depends on the age of the person and the conditions in which sleep takes place. The young may need more sleep than the old, but usually eight hours are enough for the health of grown-ups. Some can do with less than this amount, but others may need more. ...
From an evolutionary perspective, The Energy Conservation Theory of sleep suggests that humans slept during the overnight hours to reduce the amount of energy expended during times when it wasn’t efficient or safe to search for food. (33) ...
The amount and characteristics of sleep vary significantly according toage. The newborninfantmay spend an average of about 16 hours of each 24-hour period in sleep, although there is wide variability between individual babies. By about the sixth month of life, many infants are able to sustain...
Enough sleep is important to health. The amount of sleep needed depends on the age of the person and the conditions in which sleep takes place. The young may need more sleep than the old, but usually eight hours are enough for the health of grown-ups. Some can do with less than th...