Can dolphins talk ? They can't talk with words, but they talk with sounds. They show their feelings with sounds.

 Dolphinp travel in a group. We call a group of fish a“school". They don't study, but they travel together Dolphins are mammals, not fish, but they swim together in a school.

 Dolphins talk to the other dolphins in the school. They give information. They tell when they are happy or sad or afraid .They say "Welcome” when a dolphin comes back to the school. They talk when they play.

 They make a few sounds above water They make many more sounds under water. People cannot hear these sounds because the sounds are very, very high. Scientists make tapes of the sounds and study them.

 Sometimes people catch dolphins for a large aquarium. People can watch the dolplains in a show Dolphins don't like to be away from their school in an aquarium. They are sad.

 There are many stories about dolphins. They help people. Sometimes they save somebody's life. Dolphin meat is good, but people don't like to kill them. They say that dolphins bring good luck. Many people believe this.

It's March, 2050.

   Frank and Mary Smith wake up in their comfortable house in the morning and switch on the bedroom computer to get the latest news. They used to read the Times, but changed to electronic newspapers many years ago.
   There is the usual news about space: another space flight has returned from Mars and scientists have discovered a new planet. Then they turn to business news: the US dollar has risen greatly in Shanghai, one of the world's leading business centres. Mary tells the computer to buy 5,000 dollars, and there is a quick response that it has been done.
   As they watch the screen, Mary orders one of the household robots to make coffee for them.

   Frank disappears into the study to join a video conference with his partners around the world. He is a computer engineer, working for several companies. This is his third job: he used to be in marketing and then television.
   Mary has a quick look at the shopping channels - the usual selection of electric cars, household robots and cheap travel offers - before picking up the video phone to talk to her assistant. She also has a job and she is doing medical research. Both she and Frank used to have an office desk in London, but in 2014 they decided to move to the seaside and work from home.
   Frank and Mary have one daughter, Louise, who also has her own workstation at home. She goes to school only one day a week, mainly to play with other students. Classrooms disappeared in 2030 because there was no longer any need for them: communications systems have made it much easier to learn at home.
   Louise, now thirteen, is studying Chinese at present, which has become a world language as important as English. Louise has many Chinese friends. They communicate by computer.
   According to the family doctor, Louise will live to at least 130. Her wish is to work for a few decades (十年) and then spend her time on music and painting.

    Do you check your mobile phone often? Do you feel anxious if your mobile phone is not with you? When there is no WiFi or signal for your mobile phone, will you get nervous? If you say yes, then you've got addiction(上瘾) to mobile phones.

    ①Nowadays, we can see the scene everywhere in the life: in subways, restaurants, roads,people are watching their mobile phones. From family party to dating with friend, people couldn't top checking their twitter, WeChat, facebook on the mobile phones and snubbing(忽视)the persons in front completely. Phubbing (低头症) influences not only the young people, but also the old and even the kids.

    "Phubbing" is a new word which comes from the words "phone" and "snub". It describes the habit of snubbing someone in favor of a mobile phone. ②因为玩手机，更多的人变得沉默。They do nothing but bow to play mobile phones.③ time, spend too, they, phones, much, the on(.) And they don't have time to communicate with persons in real life.

    If we keep playing with phones when we are with our friends or family, we will spend less time talking to them. In fact, they need and deserve to be cared for.

    Let us put down the cell phones and enjoy the nature, the food, the books and all the beautiful things and persons around us.

    Fire was discovered many thousands of years ago. The first time humans saw fire was probably when a tree was destroyed by lightning(闪电).Humans soon learned how to make a fire. They probably made the first fire by rubbing (摩擦)two sticks together. Fire was very important to humans. They needed fire to keep warm at night. They used fire to cook food. ⑶They used fire to keep enemies and wild animals away. In some parts of the world fire was used to send messages. The Indians in America, for example, used fire to make smoke as a message. In some other countries people lit fires to warn their friends of danger. ⑷Fire was also used to give light. Before the invention of the oil lamp(灯), humans burned sticks to get light. One man even used fire to tell the time. He invented a candle clock. He made a candle that took exactly twelve hours to burn. Then he marked this candle in twelve equal(相等的) parts. He lit the candle and could tell the time by counting the number of parts left of the burning candle. But the candle clock did not always work well. If there was a wind blowing on the candle, it burned too quickly.

Do you want to get your heart pumping？The following movies are coming to make your summer vacation exciting？

If these movies can't interest you，you can also watch some others like Chang An. Never Say Never，Creation of The Gods I. 

How do you{#blank#}1{#/blank#}（问候）people?