According to a national study, in the summer of 2013, the long-term(长期的) warm weather in the UK has made the number of butterflies increase.

    Around 46,000 volunteers(志愿者) took part in the year's Big Butterfly Count(统计), and they found 830,000 butterflies.Volunteers were asked to make a record.They would record how many times they found one of 21 different kinds of butterflies.

    Later, the scientists used the records to find out how many butterflies of different kinds were found across the country.Then, they compared the results to the year before.They found that there was a rise in the number of 15 kinds of butterflies, and some of them went up by 50% compared to recent years.They said the increase in butterfly numbers was a result of warm weather.

    However, scientists also said that the number of butterflies was in decline(下降) as a whole, and that we might not see the same result the next year.

    Richard Fox, who works for Butterfly Conservation, said, “UK butterflies are in long-term decline.Studies have been done since the 1970s.They show that UK butterflies have declined in type and number.”

    He added, “We must halt the long-term decline of these beautiful creatures(生物).The only way is by stopping the damage that has been done to the butterflies' habitats(栖息地) across the UK.”

    In many high schools, there are strict rules about using mobile phones. If your phone rings in class, for example, the teacher will be very angry.

    Every mobile phone has a ringtone (铃声). It tells you that someone is calling you. Now, there is a ringtone called “mosquitotone (蚊子铃声)”.

    Mosquitotone has a special sound. Only children and teenagers can hear it. As we get older, we are unable to hear some sounds with high frequencies (频率). As a result, a child or teenager can hear the mosquitotone ringtone, but someone of 20 or older can't.

    But sometimes, people over 20 can hear the ringtone. One British student's phone uses mosquitotone. In class, the student's phone rang. The 22-year-old teacher looked at the student and became unhappy. “I heard that. You know the rule：no mobile phone in class. ”

    Not all the students are interested in mosquitotone. Jerry Jones, a high school student of 17, says, “Using mosquitotone too often is bad for our hearing. I may use it for pleasure, but not in class. It's unfair(不公平的) to the teachers！”

    What do parents think of mosquitotone？“I think it is perfect for places like movie theaters,” says Connie Neeson, 44. “Think about it. You're watching a film and someone's mobile phone rings. Mosquitotone is good because many people don't hear it. However, it also has a bad influence（影响） on their study if students use it in class. ”

    Every year on April 22, People all over the world celebrate Earth Day. It is a time to work to keep our earth clean. People plan projects to clean up the land, air and water.

    U.S. Senator Gaylord Nelson first thought of the idea for Earth Day in 1962 when he saw polluted rivers and cities with smoke. He needed to get support from Americans to clean up the earth. Finally, on April 22, 1970, 20 million Americans celebrated the first Earth Day! Now many countries around the world celebrate it, and you can, too.

    How can you celebrate Earth Day? Here are a few ideas:

    Join a clean-up project-Clean up your street or a favorite beach.

    Save energy-Turn off the lights when you leave a room, and use public transportation.

    Use less water.

    Reduce(减少)/ Reuse/ Recycle ― Practice the three Rs: First, reduce how much you use. Then reuse or recycle what you can.

    You can make a difference on Earth Day and every day!

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{#blank#}3{#/blank#}(onion). For dumplings, they have beef and carrot dumplings and pork (猪肉) dumplings 

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{#blank#}6{#/blank#}(be) also some specials every day. They are very popular. If you would like {#blank#}7{#/blank#}(order) food in the restaurant before {#blank#}8{#/blank#}(get) there, please call them or e-mail them. You can also give them your ideas about {#blank#}9{#/blank#}(they) food. If you do so, you will get a {#blank#}10{#/blank#}(luck) gift like a small cake, a candle or a fish. Do you want to have a try?

We use names every day. When we meet a new person, we usually ask, "What's your name?" It's important(重要的) to know a person's name. Names are different all over the world, so it is very difficult to know all names. 

In the US, many people have a first name, a middle name and a last name. Parents choose the first names and middle names for their babies. There are names for boys and girls. For example, John, Peter, Tom and Mike are all names for boys. Elizabeth, Bonnie, Susan and Mary are all girls' names. The last name is the family name. Usually, it is the father's family name. 

Everything has a name. Names are important. 

 In the coastal city of Laguna in Brazil(巴西), there is a special fishing team. It is made up of human fishers and dolphins! They work together to catch the same food-mullet(鲻鱼).

 Mauricio Cantor from Oregon State University, US, studied this relationship. As he told Science News Explores, the cooperation started more than a century ago. "The dolphins are really good at finding fish and driving them to the coast," Cantor said. "Fishermen are really good at catching the fish with their nets."

 Cantor's study described how fishers and dolphins give signals (信号) to each other during fishing. When dolphins find fish, they drive them to the coast. Then they arch (拱起) their backs in front of the fishers to tell them to cast(撒) nets. Fishermen will then cast the net s right away, or they may lose the best chance. Fishermen need to be well-trained to understand the signals from dolphins, said Cantor. Once the fish are caught in the nets, dolphins can move in and get some as their food.

 The study found that fishers are 17 times more likely to catch fish by working with dolphins. At the same time, cooperative dolphins have 13% higher survival rates (生存率) than other dolphins."Human-animal partnerships give us an idea of how well our human can get on with nature," Cantor said.

▲ . There is a kind of bird named the"honey guide" in Africa. Their name can show what they do-they work with honey hunters(搜寻者). In return, the birds get their favorite food.