21．
It is natural for people to feel like moving when they hear music. When a song has a good drumbeat, people want to tap their feet. They want to move their bodies with the music. People all over the world love to dance. Every culture has (1)       dances. Dances can tell stories. They can be done to celebrate. One dance might celebrate a great success. Another might celebrate a wedding. A dance might (2)       sadness when someone dies.
Dance can be a way for the community to come together. People have shared experience through dance. They understand the world around them and their relationship to it through their dances. But dance does not have to be done (3)      . Dancing can be a very personal thing. A person might enjoy dancing in a private room to the radio. Or a person might perform for (4)      .

22．
Through dance, people show how they feel in the song. They can help the audience to experience the song in a whole (1)       way. Dance is also great exercise. When you really start moving, you work up a sweat. Your (2)       starts beating faster. That's a sure sign that you are getting a good workout. You can move your body in ways that build strength and make you more relaxed. It is one of the most fun kinds of exercise. It is a shame that many people (3)       too shy to dance in front of others.
Dancing is such a great way to forget all of your cares and worries. Just for a few minutes, you become one with the music and nothing else matters. So it is important to (4)       about the people watching. Just get lost in the music!

38． Every day, people pack their belongings and move to new places. Why do people move? There are many reasons. Look around you. Do you know someone who has moved? Maybe they came from a rural area, or from a nearby city or town. Perhaps they came from another country. It's possible that you moved to the city that you live in now. Let's look at the following important reasons people move.
Jobs
People move to find jobs and a better life. Sometimes, people move from rural areas to urban areas, such as cities, to get a job. In 1990, about a quarter of the people in China lived in cities. Today, over half of the Chinese people live in cities. People find a better way of life in other countries, too. In the 1950s, from Europe moved to Brazil to work in factories. Around the world, people move abroad to find new jobs and a better life.
_____
When another city has good services, people want to move there. For example, families want to live in a city with good hospitals and schools. Sometimes people move from a city to areas called suburbs. Suburbs are near the outside of the city. They are quiet and have wide streets. Suburbs have more space for schools, hospitals, clinics, shopping malls, and zoos. Families with young children like to live in suburbs.
New Experiences
Finally, people move when they want a change in their lives. Sometimes, older people move to places with better weather. Some students go to universities in another country to learn about other places. Whatever the reason is, people often move to find new experiences and a better life.
As you can see, people move for many reasons. Maybe someday you or someone you know will move, too!

39． Jacques Cousteau loved the sea. He spent his whole life exploring it. He wanted to share its beauty with the world. Growing up in France, little Jacques was (1)       and sick. Doctors encouraged him to swim to build up his strength. He discovered that he loved the water. A friend gave him a pair of goggles so that he could see underwater. Those goggles changed his life forever. Cousteau wanted to stay underwater (2)       to see even more. The diving suits of his day were heavy and big.
They didn't (3)       much freedom of movement, and an air hose connected the diver to a boat.
Cousteau and his friend Emile created a breathing device they called the Aqua-lung. It was the first machine that would let a diver breathe (4)       for a long time. Now Cousteau was free to explore. A silent world opened up to him. Cousteau bought a boat and sailed all over the world. "What is a scientist after all? It is a curious man looking through a keyhole, the keyhole of nature, trying to know what's going on." Cousteau explored the freezing waters of Antarctica and found them (5)       whale sand squid. Jacques Cousteau was the world's king of the oceans. He produced fifty books, two encyclopedias, and dozens of documentary films. His TV series, The UnderseaWorld of Jacques Cousteau, brought whales, octopuses, otters, and dolphins right into people's living rooms.
While exploring off the coast of Australia, Cousteau and his crew saw coral reefs, kelp forests, and sponge gardens. They came face to face with the leafy sea dragon. Cousteau created the Cousteau Society. This group teaches people about ocean life and keeping our seas away from (6)      . Jacques Cousteau loved the sea. He shared its beauty with the world so that everyone could love and care for it, too.

40．　　We often think it certain that our parents are always there for us, but this is not true for "left-behind" children. They 1.h             ever see their parents because their parents work in cities, leaving them behind in the countryside to be cared for by their grandparents.
　　As in August, China had 6. 97 million left-behind children, about one-third of all rural children. With Spring Festival arriving, the government is calling on parents working outside to 2.r            home and celebrate the new year with their kids. In fact, children living without their parents can face many problems, such as their 3.e            , safety and mental (心理的) health. For example, their grandparents may not be able to help them with their homework or raise them properly. This can cause children to have an 4.u             feeling, according to Workers' Daily.
　　The government has taken some action to care for and 5.p             left-behind children, such as sending social workers to rural areas. They will 6.r            to the government if they find that any left﹣behind child is suffering from abuse (虐待), China Daily noted.
　　But the best solution is to bring parents and children back 7.t            . The government has encouraged those workers to go back to their rural hometowns to look for work and business opportunities. Another solution is to make it easier for rural children to attend schools in the cities.

41．Kindness goes a long way
When I was in college, a white cat liked to show up on our campus now and then. It was clear that he was a stray (流浪的) cat because he looked thin. Students would play with him after class and feed him all kinds of food. The school didn't say anything about the cat for a long time.
But one day, we were told that one of our fellow students had an infectious (传染性的) disease and that the cat was possibly the source (来源). After that, we were not allowed to touch any stray animals on campus. The school started to make efforts to keep animals off campus as well.
Since we were not allowed to feed the white cat, it was hard for him to find food on the street. He became all skin and bones. Though the rest of us couldn't take care of the cat, a security guard at our school decided to take on the responsibility of caring for him. He took the cat to a vet for a health check. He also ①_________ to a nearby supermarket and ②b__________, as well as a small bed for him to sleep in. He made sure the cat was healthy and comfortable.
It might seem like a small effort to some people. But this man risked his job — his only source of income — just to feed a tiny cat who no one else cared for. It was a very heartwarming thing to see.

42．Write at least 60 words on the topic "Sometimes troubles can also make us go forward". (请以"有时候麻烦也能促使我们前进"为题, 结合自己的亲身经历, 写一段不少于60字, 中心突出、语言正确、叙述流畅的短文)(标点符号不计入字数)
以下表达供参考:
learn from on the other hand overcome
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________