Once upon a time, there was a river. The river was very _________. He had spent long time alone and refused to share his water with any fish, plants or animals. His _________ was full of loneliness and sadness.

One day, a little girl came to the river. _________ was going to move to another country and decided to put her favorite little fish into the river. This little fish, named Sam, was a happy fish. When he fell _________ the river, he felt the river’s loneliness. Sam tried to _________ to the river and wanted to make the river happy. But the river told Sam to go away. Sam didn’t _________. He kept asking and swimming in the river, and finally he started jumping in and out of the _________. As time went by, the river became _________ and they became good friends. Later, the little girl came back from the country and she took the fish home.

The river _________ that night thinking about how much fun it was to have a friend, and how much he had missed his friend. Before, he was so __________. From then on, the river became friendly to others and made friends with the plants and fish in the river.

Why is music so important to children? Here are some of my thoughts on the subject.

Music has a positive (积极的) effect on young children’s development! New research shows that music has a good influence on young children’s cognitive (认知的) skills, such as spatial reasoning (空间推理) and memory. Research also shows that offering children an interesting environment can support children’s healthy growth and development.

Young children enjoy making music with others! Making music with others gives children a wonderful feeling of belonging to the group. Children might have difficulty joining in activities with others because they are shy, have limited language ability or special needs, but they can freely take part in a music activity.

Music makes young children happy! Children seem to experience much pleasure and joy when listening to music, making music and dancing to music. Whether they are singing along to a CD, playing an instrument or dancing to music around the classroom, most children seem to enjoy participating in a music activity. How wonderful it is to offer children the chance to take part in some activities about music!

The activities can make children feel relaxed.

Many of us may have experienced the surprise of seeing recommended(推荐的) songs after listening to certain songs on a music app. When we open shopping websites, we are more likely to see things that we might want to buy.

This is based on data (数据). Data is not only about numbers, but also information from almost every part of our lives: our location, shopping habits and interests. All of these are called “big data”.

President Xi Jinping called for China to speed up its big data level in order to better serve social and economic(经济的) development and improve people’s lives. He also asked for greater use of big data in areas like education, social safety and transportation.

In the past few years, we have seen big data being used more often in China. The role it plays in tourism is just one example. The data travelers share online is providing the tourism industry with a lot of information about the country’s scenic areas. After the data is analyzed (分析), different scenic areas can create their own online information for other travelers to see. The information not only tells travelers’ reviews, but also tells the scenic areas where services need to be improved.

Big data is important for economic development. With a growth rate of 30 percent, sales of big data services and products in China will reach l trillion (万亿) yuan yearly.

81. 幸福源于什么？不同的人会有不同的感受。请以“Happiness From ________ ”为题，用英语写一篇短文，叙述你生活或学习中所经历的一件令你感到幸福快乐的事。

Happiness From__________