My dear friends, do you like cycling? Cycling is full of     1    . When I go out, I always like it. But cycling in the UK is different from     2     in China.

First, you have to ride on the left side of the street. It’s not the same as you do in China. It was the     3     difference.

When I was riding on my bike for the first time in the UK, I heard someone     4     to me “Wrong side! Wrong side!” I didn’t     5     about it at first, but soon saw a car rushing by me.     6    , I was not hit.

    7    , UK bikes have two lights, a white one and a red one. The white one is in the front and the red one is at the back. When you’re riding in the dark, they can keep you     8    . But in China, you can’t see     9     on bikes in the dark.

There’s another difference between UK bikes and Chinese bikes. What? Stands. You can leave your bike     10     you like in China, but you can’t do so in the UK.

How many of your classmates drink cola now? Nearly everyone     1     it. Did you know that cola     2     a kind of medicine about 200 years ago?

John S, Pemberton was a doctor from America. He said to his friends, “I     3     many months experimenting to find a kind of medicine for headaches. I     4     different oils(油) and ingredients together and heated them until I found something helpful. So far, I     5     already. I put the medicine into bottles(瓶) and begin selling it in drugstores. The people have to add water to it before drinking.”

Then, how did cola go from being a medicine to a soft drink? That came by accident. One day, a man who had a headache came into a drugstore. He asked for a bottle of cola. He wanted     6     it right away, so he asked the clerk to add some water to the medicine while he     7    . But there was no hot water at the drugstore. The clerk suggested     8     soda water (苏打水) instead. The man agreed. After drinking it, the man said it tasted wonderful. From then on, it began     9     more popular. Today cola     10     in most countries around the world. Although it is no longer used to treat headaches, it is still very popular and fills people with energy.

The Silk Road is the name of different roads that long ago connected Europe, Africa and Asia. People reached these different     1     along these roads. Scientists believe people began to travel the Silk Road about 3,000 years     2    .By the time the Chinese silk trade became     3     in the world, the Silk Road covered almost 6,500 kilometers. It spread     4     Rome（罗马）to China, which is from the West to the Far East.

Traders traveling along the Silk Road     5     silk, of course. They     6     carried and traded spices（香料）, clothes, valuable stones and gold.

During its busiest period, the Silk Road allowed people from many different cultures and countries     7     each other and mix. All these peoples traveled the Silk Road, and they shared goods, stories, languages and cultures.

In modern times, the old Silk Road routes（路线）are still     8    , but now they are crossed by trains instead     9     horses and camels. There is even a Silk Route Museum in Jiuquan in China. It has     10     35,000 objects from all along the Silk Road. In this way, China protects the history of many countries and peoples.

The Olympic Games started in ancient Greece nearly 3, 000 years ago. Young men showed their     1     by competing in sports. But the ancient Olympic Games were not just about sports. The Greeks also used the Games to honour their gods, particularly (特别地) Zeus. Zeus is     2     the king of the Greek gods. Many of the ancient Greek's sports are still played today, including wrestling (摔跤), running, jumping and throwing contests. But there is one     3    . In ancient Greece, the athletes competed naked (赤裸), and they were all male! The ancient Games mostly ended in 146BC. But the modern Olympic Games started again in 1896 and now people from all over the world     4     them!

Ian was born in Sydney, Australia, and grew up near the sea. As a child, he loved swimming, fishing and sailing in Sydney Harbor. After finishing school, he started a construction company, but his     1     love was the sea and sailing. For more than 40 years, he represented Australia in international sailing competitions. In 1987, he was competing in an around-the-world sailing race when he began to notice the huge amount of rubbish in the world’s oceans. When he returned to Australia, he decided to do     2     about it. He started close to home by organizing a community event called “Clean Up Sydney Harbor”. On Sunday, January 8, 1989, more than 40,000     3     came out to make the clean-up a national event. The day was called “Clean Up Australia Day”. It was a huge     4    . Across Australia, about 300,000 people spent the day working to improve their local environment.