2018中考专题复习补全短文(六选五)(有答案)

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 don't fear, there is some good news. The study also found that the more practice you get, the less stressed you'll be. So, it turns out that practice really does make perfect.

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 bird's 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 funny-shaped 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.

三、

One cool April 22 morning, people started the day as usual. Yet it was not a normal day. What's 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 don't 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.______ It's 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!