阅读理解

　　Lindsay hasn't felt like herself these days．Her friends have noticed it, too．Kia was surprised when Lindsay refused her invitation to go shopping last Saturday．There was really no reason(理由)not to go, but Lindsay just didn't feel like it．Instead, she spent most of Saturday sleeping．

　　But staying in more than usual isn't the only change in Lindsay．She's always been a really good student, but over the past few months she’s not done so well, and she has trouble putting her heart in her study．She's even failed some exams, and she hasn't yet handed in her homework．

　　When she gets home from practice, she's not hungry for dinner．Though she usually eats a little something with her family at last, she just doesn't have much of an appetite(胃口)－and nothing seems to taste as good as it used to．After dinner, Lindsay goes to her room, does a bit of homework, and goes to bed．She's not even in the mood(心情)to talk on the phone with her friends．

　　When her mother asks her what's wrong, Lindsay feels like crying but doesn't know why．Everything seems wrong, yet nothing too bad has happened．Lindsay just feels sad all the time and can't get away from it．Lindsay may not realize it yet, but she is depressed(郁闷的)．

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　　For years and years people have been saying that the railways are dead．“We can do without railways．” people say as if motorcars(汽车)and planes have made the railways unnecessary．We all keep hearing that trains are slow, that they lose money, and that they’re dying．But this is far from the truth．In these days of expensive oil, the railways have become highly competitive with motorcars and planes．If you want to carry people or goods from place to place, they’re cheaper than planes．And they have much in common with planes．A plane goes in a straight line and so does a railway．What is more, it takes you from the heart of a city into the heart of another．It doesn’t leave you as a plane does, miles and miles from the city centre．It doesn’t hold you up as a car does, in endless traffic jams．And a single train can carry goods which no plane or motorcar could ever do．

　　Far from being dead, the railways are very much alive．Modern railway lines give you a smooth, untroubled journey．Where else can you eat well, sleep in comfort, feel safe and enjoy the scene while you are traveling at speed at the same time?And we are only at the beginning．For we have just entered the age of super-fast, trains traveling at 150 miles an hour and more．Soon we will be wondering why we spend so much on motorways we can’t use because we have not enough money to buy the oil and planes we can’t fly in for the same reason．

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阅读短文

　　Do you know why you sleep? You may think it’s because you’re tired．Or perhaps you’ve been told sleep is good for you．Yet no one knows exactly why or how people sleep．

　　Until the early 1950s, most scientists thought the body and brain rested during sleep．Then a scientist watched people sleep．He noticed that during periods of between 5 and 30 minutes each, sleepers’ eyes made rapid movements, as if they were watching something．He called these periods REM sleep, for Rapid Eye Movement．Periods when sleepers’ eyes did not move he called non-REM sleep．

　　Whenever the scientist woke people during REM sleep, they were having vivid dreams．Measurements showed that sleepers’ pulses(脉搏)went up quickly during REM sleep．Their breathing, heartbeat, and the blood going to the brain also increased．Far from being a time of rest, REM sleep is a time when the body is hard at work．Scientists still don’t know the reason for this．Some believe REM sleep makes learning easier．Babies spend a lot of time in REM sleep．Because of this, some scientists believe that REM sleep helps the brain grow．Others think REM sleep is a time for the brain to empty the day’s garbage．

　　One thing all the scientists agree on is that sleep is necessary．Without enough sleep, people make mistakes．Most major car accidents happen during the early morning hours, when people are sleepiest．

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完形填空

　　Long ago, people didn't wear shoes．They got used to walk 　　1　　 shoes．There was a king (国王) who went to travel far into the countryside．He felt very uncomfortable and angry because there were many 　　2　　 on the road．They made his feet hurt a lot．

　　As soon as he returned to his palace, he ordered (命令) that all the 　　3　　 should be covered with cattle hide (牛皮)．He thought it was good not only for himself but also for anyone else．He also hoped that 　　4　　 would no longer be a terrible thing．But even if all the cattle in the country were killed, there weren't enough pieces of hide to cover all the roads．

　　　　5　　 it was a silly idea．People could do nothing but sigh (叹气) as that was an order．A servant (仆人) in the palace said, “Dear King, why not find a(n) 　　6　　 solution? People don't have to kill all the cattle or cover the roads．　　7　　you have to do is simply to cover each of your feet with a piece of hide．” Surprised and pleased, the king 　　8　　．He asked people to do as the clever servant said．

　　It is said to be the origin (起源) of making 　　9　　．Though it sounds funny and strange, it makes us 　　10　　．It is much easier to change oneself than to change the world．When you change your way of thinking, maybe you'll find it easier to solve a problem．

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