Hurricanes(飓风) are storms. They can cause terrible waves, wind and rain. They happen in the Atlantic Ocean and the Pacific Ocean most of the time.

Category(类别)

·Scientists divide(划分) them into five categories according to the wind speed.

·A Category 5 hurricane can destroy(摧毁) all the buildings.

Characteristic(特征)

·Hurricane Season usually comes on June 1^st and ends on November 30^th in the Atlantic Ocean, from May 15^th to November 30^th in the Pacific Ocean.

Danger

·It can cause flood when a hurricane comes with heavy rain.

·A hurricane has an eye. The eye means the center of a hurricane. After the eye passes, the wind and rain comes again.

Safety advice

·Stay inside during the Hurricane, or you'll be injured.

    Do you know pigeons(鸽子)? They are kind of birds. They are in white and grey. Some people say they are not beautiful but they are cute and smart. Many people keep them as pets. Why do people say pigeons are clever? Because pigeons can take letters from one place to another. And they know the way home. We often see the picture of a pigeon with an olive branch(橄榄枝)in its mouth. We call them peace pigeons. They are the symbol of peace.

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    Songs help memories

    The power of music

    Most people can remember important news stories clearly, whether it was the murder of President Kennedy in the US or 9/11.But now psychologists Martin Conway and Catriona Morrison, from the University of Leeds in the UK, are investigating how music can create “autobiographical memories” of the main events in our lives. The study is online. People have to choose a song by the Beatles and describe the memories that they have when they listen to it.

Reminiscence bump

    Morrison explained that they looked at different age groups and their memories. We often remember more from when we are teenagers and this is called “the reminiscence bump”. This is the time in your life when you form your idea of who you are. For older people who have memories related to the Beatles' music, most of those memories are from when they were teenagers. But younger people also had clear personal memories from their past.

    She loves you

    This study was different from other memory studies, because people remembered events from their past with lots more details. Morrison explained:     “It was like people had travelled back to the past, and they had very clear memories of things that had happened. When they heard a song like She Loves You by the Beatles, they could remember one night in autumn 1963.They remembered what they were wearing, what the weather was like and what their friend said to them. You get a lot more information than if you just say, ‘tell me about a night you remember'. ”

    The study has found that music could be used with people who have problems remembering the past. “You could use music to help improve people's ability to remember,” said Morrison. “In the future, we would like to do more experiments to see how useful music is in helping people to remember the past, and compare it to other things that might also help.”

    Scientists have always believed that snails are not able to find their way home. But Briton Ruth Brooks, a retired teacher, has found that it is not true.

    Brooks began an experiment on snails after she got mad with the snails in her garden.

    The snails had eaten her vegetables. She didn't want to kill them, so she took them to another place. But she found they always seemed to come back.

    Brooks did an experiment. She marked the snails in her garden with nail polish(指甲油).

    She placed the snails in the area around her home and made notes of their movements.

    She found that snails have a strong homing instinct (本能); the longest returning snail traveled back 90 meters. Brooks has been named Britain's best amateur (业余的) scientist after her work won the BBC Radio 4 project, So You Want To Be A Scientist.

    She said, "I've always wanted to know whether the snails that eat my plants just come back when I move them, and if they do, what is their homing distance?

    "I would say on the evidence (证据) that it would be safe to take your snails away beyond 100m or even further. If you put them somewhere nice with some food, you can be almost certain that they won't come back."

    Zhalong is a nature park in Heilongjiang in Northeast China. It is one of the world's most important wetlands. The area provides food and homes for wildlife. It is an ideal home for different kinds of plants, fishes and birds.

    Many birds live comfortably in Zhalong Nature Park all year round, while some only stay for a short time. There are many fish in the wetlands, and the birds can easily catch them for food. Zhalong Nature Park is an important living area for the rare red-crowned cranes. There are not many red-crowned cranes in the world. Some of them live in Zhalong.

    Some people want to change the wetlands to make more space for farms and buildings. This means that there will be less and less space for wildlife.

    More and more birds are in danger because they do not have enough living space. Many of them died. The Chinese government wants to protect these endangered birds, and they can be safe in Zhalong.

    Every year a lot of tourists go to Zhalong to watch birds. This year members of our Bird Watching Club are going to study the different kinds of birds in Zhalong and the changes in their numbers. The study will begin next month.

    We do a bird count once a year. We are now inviting the second school students to help. We need more people to help us count and do something to help the birds. Many people do not understand the importance of the wetlands. We hope this information will help them understand it and make them actively take action to protect wildlife.

    Shanghai University of Engineering Science has become the first university in China to be covered by a 5G network, the university announced on Tuesday.

    Chinese mobile carriers(运营商) are expected to spend 1.2 trillion yuan（US＄176.5 billion） on 5G by 2025,50 percent more than their total 4G investment (投资), Nomura said yesterday. Carriers including China Mobile, China Telecom and China Unicom, are expected to build over 4.9 million 5G base stations by 2025.

    5G is a" game﹣changing" opportunity for carriers as they can explore new business like smart manufacturing, super high definition video and smart driving, instead of just being a "pipeline" for voice and data services.

    China will supply "temporary "5G licenses in several aimed cities this year. Consumers(消费者) will be able to use the first batch of 5G smart﹣phones and tablet computers in the second half. It's the first time that China's top industry regulator clarified the 5G industry timeline, especially the first appearance of 5G phones.

    But 5G services will become accessible to normal consumers later than expected. More work needs to be done to make the 5G industry fully developed, which won't happen until 2020, said UBS recently. New business projects and organizations, rather than normal consumers, will enjoy 5G services at first. The first batch of 5G services will be available to consumers in about 10 cities only.