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九科星If a person misses one night of sleep, he or she will be tired and clumsy. After skipping twonights of sleep, a person will have problems thinking and doing things. And his or her brain andbody can't do their normal tasks nearly as well. After five nights without sleep, a person willhallucinate(产生幻觉), which means seeing things that aren't actually there. —5_ In a word, thebrain needs to spend time in bed so that it will keep the body functioning well.A.Some kids might need more and some need less.B.Sleep also gives your brain a chance to sort things out.C.Just like eating, sleep is necessary if we are to survive.D.The amount of sleep a person needs depends a lot on his or her age.F.Make sure your bedroom is cool, quiet and comfortable, especially your bed and pillow.G.Eventually, it becomes impossible for the brain to give its directions to the rest of the body.艺考生专项第3页共5页