阅读理解

　　In the summer of 1978 an English man named Steven was driving his tractor through a field of wheat when he discovered something strange．Some of his wheat was lying on the ground．The flattened wheat formed(形成)a circle about six meters across．Around this circle were four smaller circles of flattened wheat．

　　Three years later a farmer who lived nearby discovered almost the same circles in one of his fields．These circles were larger－nearly 15 meters across．That same year , another English farmer discovered three circles of flattened wheat on his land－one large circle between two small circles．During the following years, farmers in England found circles in their fields more and more often．

　　The circles are called “crop circles” because they usually appear in fields of wheat or corn．The wheat in the circles lies on the ground but is never broken; it keeps on growing, and the farmers can later harvest it．Farmers always discover the crop circles in the morning, so the circles probably form at night．They appear only in the months from May to September．What causes the crop circles?

　　At first, people thought that some kids were making them as a joke, or that farmers were making them to attract tourists．(In fact, in 1991, two men said they made the circles themselves, but many scientists don't believe them．)People tried to copy them：They tried to make circles exactly like the ones the farmers had found．They couldn't do it．They couldn't enter a field of wheat without leaving tracks, and they couldn't flatten the wheat without breaking it．

　　Several times people reported seeing stranger objects near the fields where crop circles later appeared．Many people believe that these crop circles are the messages sent by living things from outer space(外层空间)or the marks left by their spaceships．

　　Scientists who have studied the crop circles try to find out what causes them．In the summer of 1990 some scientists spent three weeks in the part of England where many circles have appeared．They had all the latest high-tech equipment(最新高科技设备)．The equipment－worth 1.8 million dollars－got nothing．But one night, as the scientists were watching a field, crop circles formed in the field behind them, which were quite different from the others．The scientists had neither seen nor heard anything．

　　When Steven discovered the crop circles on his land in 1978, he said, “It was just like something that had landed in the field from the air and gone back up again．I don't know what to make of these things．”

　　Crop circles have appeared in England, Japan, the United States and Russia．Experts from all over the world have studied them, and they say what Steven said：They don't know what to make of these things．

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阅读理解

　　Do you get enough sleep?With so much homework it's often difficult to get the rest you need．But you need to try, because sleep keeps you healthy and it stops you getting fat．

　　Recently, a group of US scientists did a study(调查)of kids aged between 8 and 13．The study found that if kids sleep for just one extra(额外的)hour each day, the chance of their getting fat is cut by about 30 percent(30％)．

　　Why?When people don't get enough sleep, they become tired．When they are tired, they don't exercise enough．Also, kids like snacks：If they are awake(醒着的)an extra hour or two each day, they have more time to eat snacks or other unhealhy foods．

　　So, how much sleep should you get?Scientists suggest 10 to 11 hours a night for kids aged 5 to 12．For older kids, eight to nine hours will do．

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Are you the only child in the family?If so you are the most important in your family.Parents are the closest people to you in the world.But a lot of middle school students have a problem.They feel they're not as close to their parents as before.They even don't think their parents are fair(公平的) to them.

　　Some students complain that their parents often say a lot to them,but never listen to them.Some say their parents don't allow them to play computer games when other classmates are doing that.Others say when they're making phone calls to friends,their parents like to ask if they're speaking to a boy or a girl.These make them very unhappy.Some students even decide to leave home because they're afraid to tell their parents when they have done something wrong,especially when they do badly in exams.Then they usually think running away is the only choice(选择).But they don't know running away may bring them some more problems.

　　Problems are parts of life.Here are some suggestions for you to solve your problems.

　　(1)Find a good chance to talk with your parents.Don't be afraid to tell them your feelings.

　　(2)Get help from others like good friends or teachers.

　　(3)Keep a diary to help you understand more about yourself and your feelings.

　　(4)Show your parents you're growing up.Then they'll feel you're no longer a small child.

　　If you follow the advice,you'll have a happy life and never think of running away.

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