For centuries, people dreamed about leaving Earth and travelling to other worlds. Then, in 1957, the Soviet Union     1    （make） the first small step into space     2     sending up a small satellite called Sputnik.

Early space activities were conducted     3    （main） by the United States and the Soviet Union. But as time went by, Europe and Japan also learned how to build     4    （they）own satellites and rockets. Today, countries such as China, India, South Korea, Israel and Brazil are also developing space industries.

During the last 60 years, unmanned probes（探测器）have been sent towards many of the planets     5    （exist） in the Solar System. Many space observatories, such as the Hubble Space Telescope, have been created to look at the     6    （distance） universe. They have sent back some amazing pictures taken in visible（可见的）light. And they can also observe stars that are invisible to human eyes. The flood of     7    （discovery）has changed the way we look at the universe.

More than 500 people have flown in space since Yuri Gagarin paved the way in 1961. 20 people have travelled to the moon, 12 of     8     have walked on the moon. So far, space stations       9    （build）, and astronauts have learned to live and work in space for many months     10       even years.

In the closing ceremony of the 2018 0lympic Winter Games. China put on "See You in Beijing in 2022", directed by Zhang Yimou. The show centered on the talents of a team of 24 roller-skating     1    (perform) from Beijing Sport University. Two of them    2    (dress) as "Panda Captains" led the performance. The performance reviewed China's ancient times,     3    (show) the country's rich cultural heritage (遗产)and singing about the present. as well as the future that     4    (lie) ahead.

In addition to traditional symbols including the Great Wall and lucky animals    5    the Chinese dragon and the Chinese phoenix, the performance also showed China's recent engineering and    6    (technology) achievements. Towards the end of the performance, the Olympic rings     7    (rise) on the stage, as well as images of a global village, children's smiling faces, olive branches and plum blossoms(梅花),    8    stood for China's promise to promote global peace and building a better future for mankind. Finally, the skaters travelled a path on ice     9    (draw) the “Winter Dream" sign of the Olympic Winter Games Beijing 2022. The performance     10    (successful) sent Chinese people's goodwill and invitations to the world for Beijing 2022.

Strange things happened before Tangshan Earthquake happened. The well walls had deep cracks. A     1     (smell) gas came out of them. At 3：42     2     the morning of July 28, 1976, everything began to shake.     3     seemed as if the world were coming to an end. One of the     4     (deadly) earthquakes of the 20th century had begun. Soon the whole city lay in     5     (ruin). Many people died or were injured. Everything in the city was destroyed. People were     6     (shock) at this and wondered how long the disaster would last.

The army organized teams to dig out those who     7     (trap)and to bury the dead. Workers built shelters for survivors. Food and water were taken to the city. Slowly the city began to     8     (breath) again. Tangshan began to revive     9     (it) and get up on its feet again. With strong support from the government and the tireless efforts of the city's people, a new Tangshan was built. Tangshan city has proved that in times of disaster, people must unify and show the wisdom to stay positive and rebuild for     10     brighter future.

A terrible fire began to burn at France’s world-famous Notre-Dame de Paris Cathedral (巴黎圣母院)    1    the evening of April 15. Flames could be seen rising through the top of the monument.     2    (it) tall, narrow top later fell down. It took 15 hours for 400 French firefighters     3    (put) out the fire.     4    (fortunate), the main stone structure, including the two bell towers, has been saved, but there is little information on the condition of the cathedral’s glass windows and paintings.

Notre-Dame     5    (date) back to the 12th century. French writer Victor Hugo used it as the setting of his famous story, The Hunchback of Notre-Dame,    6    was first published in 1831. Sitting in the center of Paris, along the Seine River, Notre-Dame is one of the world’s most famous tourist     7    (site). About 12 million people visit it each year.

One man said, “Notre-Dame     8    (destroy) but the soul of France was not.” French President Emmanuel Macron promised that Notre-Dame would be rebuilt and asked for worldwide help repairing it. Many countries offered assistance, because Notre-Dame is part of the     9     (culture) heritage of mankind and     10    symbol for Europe.

It was Sunday, December 7, 1941.     1     usual, the wake-up call came at 5:45 a.m. It looked like it was going to be a normal day on board the ship. Just then there was a huge crashing sound from above. The ship shook       2     (violent) and the men looked at each other in horror. Above their heads, hundreds of Japanese planes circled like eagles. They were diving down to drop bombs on Pearl Harbor. Moments later, a bomb hit the USS Arizona.

The surprise attack came as a great shock to     3     whole nation. The next day, President Roosevelt made his famous Pearl Harbor Speech,     4     (ask) the US Congress to declare war on Japan. In     5     (respond) to the attack and the president’s address, the US     6     (join) World War Ⅱ. Today, the USS Arizona lies     7     it sank: in the middle of the Pacific Ocean. Its location     8     (mark) with a memorial shaped like a bridge, which crosses the ship’s sunken     9     (remain). Although about eight decades years has passed, the attack on Pearl Harbor, one of the     10     (dark) episodes in American history, will never be forgotten.

More than 2,000 years ago, the brave and hardworking people of Eurasia explored and opened up several routes of trade and     1     (culture) exchanges that linked the major civilizations of Asia, Europe and Africa,     2     (general) called the Silk Road by later generations. For thousands of years, the Silk Road spirit—“peace and cooperation, openness and inclusiveness(包容性), mutual learning and mutual benefit” —    3     (pass) from generation to generation. In the 21^st century, a new period is marked by     4     theme of peace, development, cooperation and mutual benefit. It is more important     5     us to carry on the Silk Road spirit in face of the weak     6     (recover) of the global economy, and complex international situations.

When Chinese President Xi Jinping     7     (visit) Central Asia in September 2013, he raised the idea of     8       (build) the Silk Road Economic Belt and the 218-Century Maritime Silk Road,     9     have attracted close attention from all over the world. The Belt and Road Initiative is a systematic project, whose goal is     10     (meet) the interests of all, and efforts should be made to combine the development strategies of the countries along the Belt and Road.

The Amber Room was given this name because several tons of amber were used to make it. The     1     (select) amber had     2     beautiful yellow-brown colour like honey. The design of the room was     3     the fancy style popular in those days. It was also a treasure     4     (decorate) with gold and jewels,     5     took the country’s best     6     (artist) about ten years to make.

Later, Catherine Ⅱ had the Amber Room     7     (move) to a palace outside St Petersburg where she spent her summers.     8     (sad), the Amber Room     9     (consider) one of the wonders of the world, is now     10     (miss).