2018中考专题复习补全短文(六选五)(有答案).doc

中考补全短文（六选五）复习专练一、What is the most stressful thing in school? It is probably exams. Exams can put us under a lot of pressure. But some students do well under pressure, while others feel terrible. 1. _ It all comes down to dopamine (多巴胺). 2._ It has many important roles: influencing memory, attention and how we learn. Our brains work best when there is an even balance（平衡）of dopamine not too much or too little. The brain controls dopamine in two ways. It either takes out dopamine quickly, or gradually. Exam success can be related to how fast dopamine goes back to an even balance. 3._ If you become stressed, your brain will start to overload (超负荷) on dopamine. 4._ The quicker you are able to go back to an even balance of dopamine, the quicker you can fix yourself perform better on a test. Scientists found that, during a test, people who slowly got back to an even balance of dopamine scored 8 percent lower. 5._But dont fear, there is some good news. The study also found that the more practice you get, the less stressed youll be. So, it turns out that practice really does make perfect.A. What happens when we sit for an exam?B. It is like a cup overflowing (溢出) with water.C. So, why do some students perform better under stress?D. Thats the difference between a good mark and a bad mark.E. Dopamine is a chemical in our brain that sends information to our body.F. Is there anything that can help change the speed of dopamine getting into our body?.5.二、When we travel around the world, we may see many buildings of special shapes in the world. 1._For example, when you see a picture of sports stadium that reminds you of a birds nest, you probably know it is the Olympic Stadium in Beijing.Great buildings always have special shapes. 2._ For example, in Zhengzhou, people can visit Henan Art Center, built in the shape of gold eggs. The shape of it is special. “Five gold eggs” is collected in a center. It means Zhengzhou lies in the centre of the Central Plain. 3._Visitors who are interested in guitars might want to visit the Guitar Museum in the USA. The building is shaped like a guitar. Inside, visitors can see all kinds of music instruments. 4._One of the newest funnyshaped museums is a pottery(陶瓷) museum in Korea. This museum, built in 2011, is shaped just like a traditional Korean pot. Visitors can see examples of pots and tools used for making pots in the museum. 5._Maybe one day, one of them will become a pottery artist. A. Its one of the modernist buildings in China.B. They can also try to make their own pots there.C. Everyone can recognize them with their imaginations.D. Maybe youre lucky enough to learn from famous players there.E. The shape of the building shows the objects people can see inside.F. They are created not only by their own wisdom, but also others help.1. 2. 3. 4. 5. 三、One cool April 22 morning, people started the day as usual. Yet it was not a normal day. Whats so special about April 22? The answer is because it is Earth Day. People all over the world celebrate this important day. The idea of having a special day to celebrate the Earth began in 1960s. Life was very different then. 1._ Most people had no idea how dirty our air and water were. On April 22, 1970, twenty million Americans joined the first Earth Day activities. This showed that people really want to do something for the environment. Since then laws have been passed to protect the air, water, land, and animals. The vehicles（汽车）such as cars and buses you ride in must pass tests to make sure they dont cause too much pollution. Thanks to it, cars today give out about half as many bad chemicals as they did in the past. 2._ 3._ Its a good thing because they have got a lot of help. The Cuyahoga River in Ohio was so polluted that rubbish and oil on the river even caught fire! Today, the river is cleaner. It no longer burns. 4._ Now the celebration has spread to other countries. More than 175 countries take part each year. In 2007, people in China paid much attention to this big problem. People were throwing away one million plastic bags(塑料袋) a day! People had Bye-Bye Throwaway Culture Week. They wanted everyone to see how polluted it was to throw away so many plastic bags. In 2008, China passed new laws against them. Every April 22, millions of people get together to clean and protect the Earth. 5._ Our job is to put this knowledge to work. You can help keep our planet healthy, too! A. They also celebrate how far we have come.B. Its healthy enough for birds, fish, and other animals. C. As a result, the air we breathe is cleaner than it once was.D. Few people talked or even thought about the environment.E.Rivers and lakes are also cleaner today than they were before. F. Many animals near and in the river come back again after that.四、World Sleep Day, on 21st March, was created to bring attention to the growing number of sleeping problems. Sleep is a natural part of human life, but many people in the modern world dont realize its importance. 1._ In 2012, scientists at the University of Athens in Greece did a survey of over 35,000 people in 10 countries around the world, including China, Belgium and South Africa. Among the people, 24 percent said that they did not sleep well, 31.6 percent were diagnosed (诊断) with insomnia (失眠). In addition, 30.7 percent of them have visited doctors for help with sleep problems and 11.6 percent said that they felt very sleepy during the day. The survey found that many people are experiencing the effects of poor quality sleep. They cant fall asleep and often wake up in the middle of the night. 2._ Besides, noise pollution and light pollution also affect sleep and cause poor quality sleep. The survey also found that large numbers of people find it hard to sleep at night. 3._ If this happens for a long time, the risk of putting on weight and having a heart problem may increase. 4._ First, you should have good sleeping habits. Try to go to bed and wake up around the same time each day. You also need to make your bedroom a cool, dark, quiet place to sleep so that heat, light and noise do not disturb (打扰) you. At night, you should also avoid things that has caffeine, such as chocolate, coffee, tea and many soft drinks, as caffeine may keep you from sleeping. Getting a good nights sleep is important for everyone. 5._ A. As a result, sleep problems are quite common. B. And then, they may stay awake till the next morning. C. The short-term effects of this are tiredness and trouble concentrating(集中精力).D. There are many things you can do to improve the quality of your sleep.E. By following these advice, you can rest better at night and work better during the day.F. The main reasons of the problems are pressure from school or work and a fast pace（节奏）of life.五、My husband, our younger daughter and I were traveling home from New York one evening. We were driving north when my husband said, “ Look at those lights（光）in the eastern sky（天空）.” 11 Our younger daughter was sitting in the back seat and said, “What is it?”I tried to stop the car beside the road, but my husband said he couldnt see it then. 12 Then he said, “ Look, there they are again!” I then stopped the ca