In April this year, lots of bags full of small change(零钱) were seen at bus stops in Tianjin. They were made for passengers to turn their notes into small change. And such an idea came from four students from Zhongbei Middle School, Tianjin.

    "People will surely feel worried when they take a bus without coins. We just want to do something to help them," said Wang Yongcun, 15, one of the four students.

    The four boys spent their whole weekend making the change bags. After that they went to see the number of the passengers at each bus stop near their school, and then chose the top six stops to put the bags.

    Many people think that the four boys have really done a good job. But, things didn't go as the boys thought. Two days later, they found that the money was gone, and that even the bags were taken. It really made them sad but they would not give up. Their classmates and teachers came to help them in time. They put their pocket money in bags again. And the teachers also taught them to make better change bags. They tried their best to do it.

    The four boys feel very happy because they have done something good for the passengers. Their warm hearts are moving. More and more people are beginning to join in the activity.

    Mr. Evens works in Sydney. Last week he had a two--week holiday, but he didn't know where to go. He said to his friend Robert, "I hate the hot weather here, but I can't find a cool place in Australia. How will I spend my holiday?"

    "That's easy," said Robert. "You'd better go to Moscow. Snow and ice are covering the ground now."

Mr. Evens agreed with his friend. He bought an air ticket and soon arrived in Moscow. He made a happy journey there. But one day, he got into trouble. After lunch he w ent to a park outside the city. He saw a dog following him while he was walking past a house. It was hungry and wished him to give it some food to eat. Bad luck! He had no piece of bread or cake in his pockets. He tried to send it away, but it began to bark at him. He wanted to look for a stick but couldn't find anything except snow and ice. Suddenly he saw a stone in the ground. He tried to pick it up but he failed.

    "How strange Russians are!" Mr. Evens said to himself. "They do not tie their dogs, but firmly (牢牢地) tie the ground!"

Last month, I met a homeless dog when I had a walk with my mother in the park. 1 dog looked dirty and weak with a thin body. I tried to go to him with some food. He shook (摇) his tail and ran 2 toward me. But when he saw 3 mother, he ran away in fear.

I began to pay attention to homeless pets 4 that. Each year, our city has 250,000 homeless 5 and the number has been increasing. What should we do to solve this serious problem? Firstly, the government should pass a law 6 homeless pets. Secondly, , charities (慈善机构) need to 7 money for more shelters (收容所). For the animals living in shelters, we need to provide food 8 medical care.

The problem of homeless pets will change for the 9 if we can work together to create a good world for them. As for me, I will 10 my mother to let me raise a homeless dog this summer. What are you going to do?

What if you don't know how to study well? The Feynman Technique might help you. It's a study method that helps students learn by teaching others. 

The Feynman Technique has been one of the best study methods for years. For one thing, it helps students really understand something instead of just memorizing information. Different from traditional study methods like re-reading textbooks or reviewing notes, it gets students to be more active in the learning process. 

If you want to use the Feynman Technique to study better, follow these steps. 

To begin with, choose a topic you want to learn. If not, you'll end up jumping between the topics without developing a deeper understanding of any of them. 

The second step is the heart of the Feynman Technique: explaining the topic simply enough to be understood by a sixth-grade student. This requires you to help the child understand by using the simplest and clearest language. This step helps divide indigestible topics into their most basic parts. 

Next, review your explanation and try to find any area where you felt that you couldn't explain the topic simply. When possible, it can be very helpful to get advice from someone whose understanding is similar to that of a sixth-grader. 

The fourth step is to improve your explanation using the information collected from the third step. 

Finally, repeat the steps. The Feynman Technique works best with repetition, and that is why going through all the prior (先前的) steps just once is usually not enough to fully understand the topic. 

Once you're confident you have learned the topic, it's time to give yourself a prize