We know that sleep plays an important part in our overall health.（1）EEAccording to a study，there are a series of serious issues beyond our control that can affect our ability to sleep well.Insomnia（失眠）or other medical issues，feeling unsafe，loud noises from within or outside our home，having to look after a baby or someone else in the household，and other reasons could all play a part.
But what about those，times when external（外部的）conditions are perfect，and yet we still fail to get to bed in time？（2）GG Plus our bedtime routine，all this has made it difficult.
（3）CCwatching TV checking email on a tablet，reading social media updates on a phone.Also，we tend to be optimistic and overconfident，and that delays our sleeping time.（4）AA But when it leads to unrealistic expectations for the future，it can lead us somewhere else.In the case of sleeping，we might be overly optimistic that replying to that email will all take less time than they actually do.
A slightly different point is that rather than the screen itself，the activity we are taking part in when using these bright screens might be causing us to stay up later than we would like.（5）DD In other ages，this would have been impossible or improper.This communication，either through stress，a request from the boss，or excitement，a social invitation，will keep us awake.
A.Of course，optimism isn't necessarily a bad thing.
B.There are several things you can do to stay up late.
C.Think of the pre-bedtime activities many people engage in.
D.We now have access to communication at any time of night.
E.However，there are many people who can't get enough sleep.
F.Nowadays，different time zones also have influences on people's sleep.
G.A combination of environmental and behavioral habits might be part of the reason.
【考點(diǎn)】健康．
【答案】E；G；C；A；D
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：2引用：1難度：0.5
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G.This type of running and racing has both a physical and psychological role.發(fā)布：2025/1/1 15:30:1組卷：3引用：2難度：0.5