根据短文理解，选择正确答案。

What are fossils?

    Fossils are the remains of plants or animals. For such remains to be considered fossils, scientists have decided they have to be over 10,000 years old. The word fossil comes from the Latin word “fossilis”, which means, “dig up”.  Fossils can be divided into “body fossils” and “trace(痕迹) fossils”. Body fossils are the remains of a plant or animal's body. Trace fossils are the remains of the activity of an animal, such as footprints, egg shells, and nests.

How are fossils formed?

    Some animals were quickly covered after their death by sediment(沉淀物) like earth, mud or sand. Over time, the parts of the animals that didn't rot (usually the harder parts like bones and teeth) were covered in the newly formed sediment. Then, a lot of chemical changes happened to the animals bodies. Water with minerals(矿物质) went into the bone and took the place of the chemicals in the bone with rock-like minerals. In the end we get a heavy, rock-like copy of the original object - a fossil. There weren't any changes in size and shape when an object changed into a fossil, but the fossil of a bone doesn't have any bone in it! It is chemically more like a rock! According to scientists, fossils have been found on every continent(大陆) on Earth.

    Can trees talk? Yes, but not in words. Scientists have reasons to believe that trees do communicate with each other. Not long ago, researchers learned some surprising things. Some caterpillars(毛毛虫) attacked a willow tree(柳树) in the woods. The tree changed the chemistry of its leaves and the leaves tasted so terrible that the caterpillars stopped eating them. Then even more surprising, the tree sent out a special vapour (蒸气) a signal causing its neighbours to change the chemistry of their own leaves and make them less tasty.

    Communication, of course, doesn't need to be always in words. We can talk to each other by smiling, raising our shoulders and moving our hands. We know that birds and other animals use a whole vocabulary of songs, sounds and movements. Bees dance their signals, flying in certain patterns that tell other bees where to find nectar(花蜜) for honey. So why shouldn't trees have ways of sending messages?

    The Spring Festival is a great festival. It's one of 1 festivals in China. People usually go home to be with their family2 the festival is coming.

    In fact, from Little New Year, people start 3 preparations for the Spring Festival. They want to have 4fresh beginning in the new year. The first thing that people usually do is to clean 5 houses. They believe good cleaning can sweep bad luck away. They also buy food to welcome the festival.

    There is a story about the Spring Festival. A long time ago, a monster called Nian6 people on New Year's Eve. People did not know what to do at first. Finally, they knew Nian was afraid7 red, fire and loud noise. Then they posted red couplets (对联), set off fireworks and played the drums. Later, Nian never came to the village again. Even today, people celebrate the festival in this way.

    During the Spring Festival, people usually visit their family members, friends and wish each other good luck. The traditional ways of 8 the Spring Festival are having a big family dinner on New Year's Eve and watching the Spring Festival Gala. In 2020, the Spring Festival 9 on January 25. Did you10a happy time? Did you do anything special?

注意：

1.表达中必须包含所给要点，可以适当发挥，不要简单翻译。

2.词数 90 左右，开头已经写好，不计入总词数。

3.表达中请勿提及真实校名和姓名。

Students in our school are free to choose some special courses according to their interest.

……

 Falling on the 24th day of the sixth lunar month, the Torch(火把) Festival is an important and traditional event for the Yi ethnic group(彝族) in Southwest China. Cheering, singing and dancing, local Yi people and the tourists usually have fun around the fire during the three- day celebration.

 The Yi ethnic group started the festival because of their natural respect of fire. The carly Yi people lived in high and cold areas in the mountains. For them, fire was an important way to light, warm, and cook. There was an old tradition— before bringing meat home, people must light a small fire outside the door and put the meat over the fire. They believed it could drive away filth(污秽). That's why they had a popular saying," Everything you eat must‘see' fire." In farming, fire was used to light leaves on the ground to make the land rich.

 Nowadays, the Yi people still celebrate the festival and it has become a social event. Every year, several thousand Chinese and foreign visitors come and join the local Yi people. In the daytime, they drink and take part in different kinds of activities, like horse racing, bullfighting and so on. When the night falls, everyone holds a torch walks around their houses and fields. Then, they put the torches together to make a big bonfire. Around the bonfires young men and women sing and dance happily.

 For thousands of years, the Yi's torch is passed from age to age. Through the festival, the Yi people not only share their joy and thanks for their good life, but also get more people to understand their traditions.