Medical experts say most Americans do not get enough sleep. They say more Americans need to take a nap—that is to rest for a short period in the middle of the day. They give people advice to sleep lightly before continuing with other activities. The experts say naps might improve health by reducing pressure.
Some European and Latin American companies have supported the idea of napping for many years. They ask people to leave work, go home and have a nap before returning. In the United States, some companies let workers rest simply in their offices. They believe this can help workers make fewer mistakes and also increase the amount of work that a person can do.
Sleep experts say it is likely that people make more mistakes at work than at other times. They say people should not carry out important tasks when they feel sleepy. And they say the best thing to do is to take a nap. About twenty minutes of rest is all you need. Experts say this provides extra energy and can increase your effects until the end of the day. But experts said that a nap should last no more than twenty to thirty minutes. A longer nap will put the body into sleep and waking up will be difficult.
①是实验室常用的燃料 ②可以提供清洁、高效的氢能
③是天然气的主要成分 ④经过加热分馏可得到汽油、柴油、石蜡等
①属于单质的是②属于氧化物的是③属于盐的是.
A | B | C | D | |
反应物状态极反应条件 | 固体,加热 | 液体和固体常温 | 液体,加热 | 固体,加热 |
其密度(ρ1)与空气密度(ρ2)的比较 | ρ1>ρ2 | ρ1>ρ2 | ρ1<ρ2 | ρ1<ρ2 |
在水中的溶解性 | 极易溶 | 难溶 | 极易溶 | 难溶 |
—Well, it all ____________ the weather.
2021年是中国共产党成立100周年。为坚定在中国共产党领导下实现中华民族伟大复兴的梦想,前进中学开展研究性学习,请你参与并回答问题。
★致敬先进党员
中国共产党成立后,涌现无数仁人志士前赴后继、奋勇向前。杨靖宇、刘胡兰、董存瑞....他们为民族的解放与独立献出宝贵的生命;雷锋、焦裕禄、王进喜....他们为民族发展奉献青春热血;钱学森、袁隆平、屠呦唧....他们为民族走向强盛竭忠尽智。
★决胜全面小康
华华给大家分享了两则节选的信息。
信息1 |
“小康不小康,关键看老乡。”2020年是脱贫攻坚决战决胜之年。党带领人民万众一心加油干,越是艰险越向前,坚决打贏脱贫攻坚战,如期实现现行标准下农村贫困人口全部脱贫、贫困县全部摘帽。 |
信息2 |
全面建成小康社会,离不开法治保障。2019 年,全国共打掉涉黑犯罪组织2949个、涉恶犯罪集 团9536个,全国刑事立案下降4.1%,八类严重暴力案件下降10. 3%.......一系列亮眼的“成绩单”,见证了平安中国、法治中国的坚实步伐。 |
★展现中国担当
面对国际形势的深刻变化和不断挑战,中国共产党带领中国人民坚定不移走和平发展道路,积极参与国际事务,发出中国声音,体现中国智慧,展现大国形象。
对此,安安和微徽在讨论会上发表了各自的观点。
★勇于担当
时代呼唤英杰,勇于担当的青年更易在实现全面建成小康社会的伟大实践中书写人生华章,在中华民族伟大复兴的历史时期绘制人生的锦绣蓝图。
①从信息1中我们感受到中国共产党。
②信息2说明。