The Milu deer is a kind of animal with large horns(角). They were very common in China long ago. They lived together and ate grass and the soft parts of trees. In the past, people did not protect the Milu deer and killed them for food or sport, so they disappeared(消失) from China .

      Luckily before all of them disappeared, the Duke of Bedford(贝德福特公爵) took some to Britain. The Milu deer like the cool, wet weather in England and their numbers increased(增长) year by year. As a result, when in1985, the government of China wanted to bring back the Milu deer, the Duck of Bedford was able to help. The first deer came back to China to the Nanhaizi Milu park near Beijing and to Dafeng, Jiangsu Province.

      Since they returned to China, their number has grown quickly .There are now so many of them that a new park has been opened for them in Hubei Province. Now the Milu deer live in the wildlife parks and have good protection. We hope that one day they can live in the wild again.

    Imagineyou are taking a walk on the beautiful beach. Just then, your feet step oversomething and you hear a crack (噼啪声) —an empty plastic bottle. Things like thisare happening more often because of sea rubbish.

    Studiesshow that 80%of all the waste is from the land. The waste is mainly plastics (塑料制品) which are really hard todegrade (降解). So the rubbish will remain there for along time. Some of the pollution is caused accidentally. For example, about10,000 product-filled boxes are lost at sea every year from business ships.Sometimes people just throw things into the water from boats or land. Manylarge rubbish areas are formed in the North Pacific Ocean.

   Thankfully, the situation isn't ignored (忽视). Groups like the National Oceanic and AtmosphericAssociation (NOAA) are taking action to help clean the sea. Since 2006, 76projects have cleared out 3,814 metric tons (公吨) ofrubbish from the sea. Methods of rubbish cleaning include using machines toremove (移除) the waste away from the surface of seawater. Besides, special nets are set by the mouths of rivers to stop therubbish before it reaches the sea. If everyone does his part, sea rubbish seemslike a problem that can be solved.

①Reading is a good hobby for all kinds of reasons. 

②First, reading is fun. You can always keep yourself happy if you like reading. You will never feel bored or tired. 

③Second, you can read a book almost anywhere: in a car, on a plane, or even in the bathroom. All you need is a book. 

④Third, reading is useful. It's also a good reason. If you take reading as a hobby, you will get better and better at it. And you will read faster and find it easier to understand what you read. As your reading skills improve, you will probably find your schoolwork becomes much better. 

⑤Some people say that reading is out of date. This is not true. You can read books online by using computers or mobile apps. Good readers may become writers. They always have more things to write about. 

⑥Reading is a wonderful hobby. Why not start reading right now? 

Sadness hits every person living on this planet.If you haven't yet experienced this emotion（情绪），then consider yourself as a truly different person.Do you know what you should do when you are sad？{#blank#}1{#/blank#}

Write.You can write down your sad stories in your notebook or on your Weibo.If you're brave enough，make your Weibo public and let people read it. {#blank#}2{#/blank#}

Listen to music.Not the sad type.Just listen to the type of music that can heal（治愈） your soul and put you in a better mood.Lots of people agree that listening to music can make them forget sadness.

{#blank#}3{#/blank#}If you have a pet，it's a great idea to play with it!If not，then go to the local animal shelter and spend some time with those cute animals.Dogs especially make humans happy，so go ahead and play with them.

Do chores.Finish all those chores you' ve been putting off for a while. {#blank#}4{#/blank#}Go and buy some new bowls，plates，forks and other tools.These small things are just excuses to make you forget your sadness.

{#blank#}5{#/blank#}Volunteer at your local children 's hospitals and old people 's homes.If you can 't help yourself，at least you can help someone who needs your help，right？Lots of people say that helping others can make them happy.

①What did people do to communicate in ancient times? Here are some very interesting answer s to this question.

②Alphorns(阿尔卑斯长号角) were once used to communicate in the mountains in Switzerland. They are very long and they are very heavy, too. So, alpharns are hard work to blow. Then why use them? Well,they make a loud sound which travels much further than the human voice. Herdsmen(牧民) used them to call cows in the distance for milking. At sunset, alpharns were also used to send a message down to villagers that all was well. These days, they're mostly used as musical instruments.

③The people ofLa Gomera, an island in Europe, have their own special way of sending messages from mountain to mountain. They use a whistled(口哨的) language called el silbo, which comes from their language . Spanish. Whistling can be heard within five kilometers, which means it can be used across much greater distances than shouting. El silbo can be used for all kinds of messages, including greetings and announcements. El si lbo is used a lot less than it used to be, but primary school students in La Gomera have to leave it.

④Did you know it's also possible to send messages without making a noise? This is called visual communication, and it includes the use of flags and even smoke. Long ago, soldiers along the Great Wall of China used smoke as a warning. If they noticed the enemy from their signal(信号) tower, they li t a smoky fire. When soldiers in other towers saw the smoke signal, they lit fires too. In this way, messages about the enemy's arrival could travel as far as 800 km in just a few hours.

Everyone knows water is important to all living things. But do you know these interesting1 about water? 

Without water, the Earth would look 2 the Moon. People can live for a long time without food, but only 3 days without water. Scientists say about 70% of the human body is made up of water. Water4 up about 83% of our blood, 75%of our brain, and 80% of our lungs (肺). About 95% of a tomato is water, and about 80% of an apple is water. So 5 can we do to help with water problems? 

Keep a shower to 10 minutes or 6 time. It helps save much water. Use a broom to sweep the floor, the stair, the garage( 车 库 ) , or the sidewalk instead of water.

7 throw your used water away. Instead, you can use some to water plants or run the toilets. Use a bucket( 桶 )of water to 8 your bike or the family car instead of water pipes. 

Use water only 9 you need it. Don't leave water running. Be sure to tum the tap10 when you are not using it.