百度试题 结果1 题目Six hours of sleep ___ necessary for a child. A. is B. are C. be D. being 相关知识点: 试题来源: 解析 A。六个小时的睡眠作为一个整体的概念,谓语动词用单数。反馈 收藏
Most people need seven to nine hours of sleep a night. Are you getting enough sleep or are you in “sleep debt (债务)"?The Sleep Foundation says sleep debt is the difference between the amount () of sleep you need and the amount you get. So, if your body needs nine hours of sleep...
Five hours of sleep are not enough.正确还是错误答案: 答案:正确。成年人通常需要每晚7到9小时的睡眠以保持健康。五个小时的睡眠通常被认为是不足的,因为这可能不足以让身体和大脑...点击查看完整答案 手机看题 你可能感兴趣的试题 问答题 He called out to the waiter,"Please bring me a cup water to...
Getting 6 hours of sleep or less can put you into what’s called a sleep deficit(不足),which makes you less sharp mentally and prevents you from performing properly on tests.【2】This way,you needn’t stay up for the test and can get a good night of sleep before your big day. ...
Morgenthaler, Timothy. (2010). How many hours of sleep are enough for good health? Retrieved 02/20/2013, from http://www.mayoclinic.com/health/how-many-hours-of- sleep-are-enough/AN01487
“hour”意为“小时”,是可数名词,“eight”是大于一的数词,后面应跟复数名词,所以“hour”变为复数形式“hours”。“of”意为“...的”,“sleep”是不可数名词,意为“睡眠”,而句子的主语是“sleep”,所以be动词用单数“is”。A项“are”是复数;B项正确;C项缺少“of”;D项缺少“of”,并且“are”...
How much sleep do we need? 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(平均)of seven to eight hours a night. After the age of fifty, the average sleep time goes down to 6.5 hours...
Get Enough Sleep Getting 6 hours of sleep or less can put you into what’s called a sleep deficit(不足),which makes you less sharp mentally and prevents you from performing properly on tests.2.This way,you needn’t stay up for the test and can get a good night of sleep before your...
In America, most people don’t get enough sleep. Children aged 5 to 12 are advised to sleep 10 to 11 hours every night, but most of them can’t sleep that long. A study found that about 41 million American workers got less than six hours of sleep every night. Scientists worry that ...
Enough sleep is important to health. The amount of sleep needed __31___ on the age of the person and the conditions in ___32___ sleep takes place. The young may need more sleep than ___33___ old, but usually eight hours are enough for the health of grown-ups. Some can do wi...