成人阅读市场日益数字化,速度之快超过了出版商的预期。而面向8岁以下儿童电子读物的销售却没什么变化。据几家出版商估计,电子读物在儿童书籍年度总销量中的份额不到5%,而某些类别成人书籍的这一比例已超过25%。很多人买实体书也是为了送礼,毕竟6岁大的孩子大多并不喜欢亚马逊礼品卡。
二、将下列短文译为汉语 Like most creatures on earth. humans come equipped with a circadian clock, a roughly 24-hour internal timer that keeps our sleep patterns in sync with our planet At least until genetics. age and our personal habits get in the way. Even though the average adult needs eight hours of sleep per night, there are "short-sleepers," who need far less. and morning people, who, research shows. often come from families of other morning people. Then there's the rest of us. who rely on alarm clocks.
For those who fantasize about greeting the dawn. there is hope. Sleep experts say that with a little discipline (well actually, a lot of discipline), most people can reset their circadian clocks. But it's not as simple as forcing yourself to go to bed earlier (you can't make a wide-awake brain sleep). It requires inducing a sort of jet lag without leaving your time zone. And sticking it out until your body clock resets itself. And then not resetting it again.
To start, move up your wake-up time by 20 minutes a day. If you regularly rise at 8 a.m., but really want to get moving at 6 a.m., set the alarm for 7:40 on Monday. The next day, set it for 7:20 and so on. Then, after you wake up, don't linger in bed. Hit yourself with light. In theory, you'll gradually get sleepy about 20 minutes earlier each night, and you can facilitate the transition by avoiding extra light exposure from computers or televisions as you near bedtime.
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