Ⅱ.根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

　　We've all been there：It's been a long week at work，so Friday night，you reward yourself by going to bed early and sleeping in.But when you wake up the next morning，your arms and legs feel like they' re filled with sand.__5__ If too little sleep is a problem，then why is extra sleep a terrible solution?

　　__6__And it starts to change the working form which your cells have adapted to.You might be crawling (爬) out of bed at 11 a．m.，but your cells started using their energy cycle at seven.

　　__7__If you' re oversleeping on the regular，you could be putting yourself at risk for diabetes，heart disease，and obesity.Study found that people who slept 9 to 11 hours a night developed memory problems and were more likely to develop heart disease than people who slept 8 hours during a peaceful night.So oversleeping isn't just going to ruin your Saturday.

　　__8__These are generally people who have an uncomfortable sleep situation，or a sleeping disorder.

　　No surprise，drugs and alcohol might also be causing you to sleep too much，which makes you depressed.__9__ But no matter what's causing it，too much sleep is not good for your long－term health.Rather than playing computers or watching TV shows，try getting some balance between your weekend and weekday sleep.

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