A tornado (龙卷风) is a kind of strong storm with air which moves in a circle quickly. They can move over 200 miles per hour and cause a lot of damage (损坏). As they move across the land, they can easily pick up cars, trucks, and even houses, and then throw them very far. It is important to find a safe place if a tornado gets close.

A safe place could be a basement ( 地下室) or the lowest floor. If you are in a home without a basement, try to find a first-floor bathroom or a small room without windows in the middle of your house. You should curl up (蜷缩) into a ball and cover your head and neck with your hands.

But there are some people who actually want to get close to tornadoes. They are scientists who want to learn more about tornadoes. One of the best ways to do this is to get as close as possible to the tornado. They use special tools to measure (测量) what is happening in and around a tornado.

One special tool is called a tornado probe ( 探测仪). Inside the tornado probe, there are sensors (传感器) to measure wind speed, temperature, pressure, and direction.

Some probes even have cameras, so the scientists can see and understand what it's like to be in a tornado.

To be able to get these measurements, the scientists have to get a tornado probe near or into a tornado. Scientists will try to guess where a tornado will go next. Then they drive to that location and put down the probe. If they do not guess correctly, they pick up their probe and try another place. If they are right, the tornado will go near or even right over the probe. Then they take all of the measurements

from the probe and use them to predict where future tornadoes may form (形成) and travel. And they can give people some warning to keep away from a dangerous tornado.

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Chen Kai and Zhang Juntao are good friends. They study in No. 5 Middle School. They are in the same class. Chen Kai's home isn't far from school. So he walks there. It just takes him about 10 minutes. He is often the first student to get to school. Zhang Juntao's home is 10 kilometers from school. He takes the subway to school. And he is never late for school.

Chen Kai likes math. But he doesn't like English. He thinks it's difficult to remember English words. But Zhang Juntao's English is good. So he often helps Chen Kai learn English. The two boys like music. Chen Kai is good at playing the guitar and Zhang Juntao can sing very well. They are in the school music club. On weekends, Zhang Juntao sometimes goes to Chen Kai's home. Chen Kai plays the guitar and Zhang Juntao sings songs. They always have a good time.

The two boys also like animals. They often go to the zoo. Zhang Juntao likes giraffes because they are beautiful and friendly. Chen Kai's favorite animals are pandas. He thinks they are cute.

In 2013, Chinese President Xi Jinping offered to build a Silk Road Economic Belt (经济带) and a 21st Century Maritime (海上) Silk Road, which became known as the Belt and Road Initiative (BRI, "一带一路"倡议). The BRI has brought cultures together for over ten years. As the BRI continues to bring the world together, young people from the Belt and Road countries can see how it continues to develop and have a deeper understanding of it. We did a survey of 125 Chinese students. The following survey is about BRI in the eyes of the students. The diagrams (图表) below show the results.

Diagram Ⅰ DiagramⅡ

Diagram Ⅲ Diagram Ⅳ

Last summer I went to a park and saw a little dog walking around. He was dirty and weak. When he saw the bread in my hand. he ran up to me. He was so hungry. But he ran away as soon as he saw my mom. I felt sorry for the homeless(流浪的) dog.

From then on, I began to pay attention to homeless pets in Shanghai. There are more than 270,000 homeless pets in the city now and this number is still growing. The fast growth of homeless pets can cause many big problems, for example, they may spread diseases(疾病) and so on.

Why are there so many homeless pets? Some people leave their pets behind in the street when they don't want to keep them anymore, but the city can't provide enough animals' homes for the homeless animals.

How shall we work together to save these poor pets? Firstly, the government should pass laws(法律) to protect pets. Secondly, we can raise money to build more animals' homes. What's more, we could teach people how to take care of pets. Lastly, we can get a pet from the animals' homes instead of buying a new one.

I hope we can build a better world not only for homeless pets but also for ourselves.