先行词为 less sleep time(更少的睡眠时间),指物,空格后为从句的谓语动词 decreases(减少),推断空格为从句的主语,故填 which。 (4)此处考查搭配 have difficulty in doing sth.(做某事有困难),故介词 in 后填动名词 falling,构成搭配 fall asleep(入睡),表示“大约三分之一的美国人在入睡方面有困难”。 (...
How much sleep does a person need (31) the physiological bases of the need for sleep remain conjectural (猜想), rendering conclusive answers to this question impossible, much evidence has been gathered on how much sleep people do in fact obtain. Perhaps the most important conclusion to be (...
and why does your child sometimes seem to need more sleep than usual? here are some reasons why children's sleep needs may vary: genetics. there may be an inherited tendency to sleep more or fewer hours. this is probably the strongest factor, says mindell. health. a child with a ...
Finally, it is underlined that, as large individual differences do exist in the need for sleep, the search for the sleep need may be vain. A somnotypology, taking into account age, gender and the position in both the sleep–alert and the morningness–eveningness continuum, should help in ...
We are all different. Some people need only three hours of sleep a night. Others need ten hours of sleep a night. Most Americans sleep an average of seven to eight hours a night. After age fifty, the average sleep time goes down to 6.5 hours a night.翻译：我们需要多少睡眠...
Sleep and Teens-Biology and Behavior How much sleep do teens need? And how much sleep are they realistically geting? Based on current data, most teens need about 9-plus hours to have the best or most suitable sleep night. 1Many factors combine to decrease sleep in adolescents. We can thin...
1.G.细节理解题.根据"Based on current data,most teens need about 9-plus hours to have the best or most suitable sleep night.根据目前的数据,大多数青少年需要9个多小时才能拥有最好或最合适的睡眠时间"可知此处应填"然而,这表明大多数青少年达不到这一目标,很多都是相当多的".故选G. 2.D.细节理解...
可以用 how long, 只是句子结构稍有不同: How long you need to sleep depends a lot on your age. 这样说完全符合英文习惯, 而且两个句子表达的都是同一个意思.也可以这样说: How much you need to sleep depends a lot on your age. 或者, How many hours of sleep you need depends a...
Others need ten hours of sleep a night. Most Americans sleep an average(平均) of seven to eight hours a night. After the age of fifty, the average sleeping time goes down t0 6.5 hours a night. Most people have a bad night when they cannot fall asleep(睡着). The name of this ...
小题2:通过After the age of fifty the average sleep time goes down to 6.5 hours a night.“五十岁以后的平均睡眠时间降到每晚6.5小时。”一句可知，随着年龄的增长，睡眠的时间在变少。所以本题选B。小题3:通过前一句Many of these people can not fall sleep“这些中的许多人不能入睡”...