We live on the earth. We use the sea around us. What do we take from the ocean? And what do we give to it?

    We take fishes from the ocean—millions of kilograms of fish, every year, to feed millions of people. {#blank#}1{#/blank#}We take minerals (矿物) from the ocean. We can get salt by evaporating (蒸发) seawater. {#blank#}2{#/blank#}such as gold. {#blank#}3{#/blank#}Seaweed (海草) becomes food of many kinds—even candy and ice cream—as well as medicine. Believe it or not, fresh water is another gift from the sea. We can't drink ocean water. {#blank#}4{#/blank#}But ocean water becomes fresh water when the salts are removed. In the future, we will find ourselves depending more and more on fresh water from the sea.

    The sea gives us food, fertilizer, minerals, water and other gifts. What do we give the sea? We pollute the ocean all the time. {#blank#}5{#/blank#}Throwing waste into the ocean is killing off sea life. Yet as the world population grows, we may need the sea and its gifts more than ever.

    We are finally learning that if we destroy our sea, we might also destroy ourselves. Hopefully, it is not too late.

The Long March 5 Y3 is China's strongest rocket.

    China's biggest and most powerful carrier (运载) rocket roared (轰鸣) into space on Dec 27, 2019. The Long March 5 kicked off its mission (任务) at the Wenchang Space Launch Center in Hainan.

    The 57-meter-tall rocket, known as the Long March 5 Y3, is the tallest, strongest and most technologically sophisticated (技术复杂的) rocket in China. Since it is much bigger than China's other Long March rockets, people call it "Fat 5". The rocket is able to carry spacecraft (航天器) weighing up to 25 tons – roughly the weight of 16 midsize cars – into low-Earth orbit (近地轨道), China Daily reported. This payload capacity (有效载荷) is about 2.5 times greater than that of any other Chinese rocket.

    During the December launch, the Long March 5 successfully sent the Shijian 20 experimental satellite into orbit. At more than 8 tons, it is the heaviest and most advanced communications (通信) satellite built by China.

    The launch also tested key technologies that will be used to take the Chang'e 5 probe (探测器) to the moon, according to the China National Space Administration.

    The success of the Long March 5 launch washard-earned. The rocket's first launch was carried out in November 2016 at the Wenchang center. A second mission took place in July 2017 at the same site, but failed to send a satellite into orbit. According to project leaders, in the two years since that failure, the rocket's research team held more than 600 seminars (研讨会) and carried out at least 1,000 experiments and tests to improve the rocket.

    "Compared with the Long March 5 Y2 that was used in the failed second mission, the new one has about 200 technical improvements, including changes to the engine design," Li Dong, the rocket's chief designer (总设计师), said to China Daily.

    The future missions of the Long March 5 will include a trip to Mars, taking back moon samples (样本), and placing parts of a manned (载人的) space station into orbit. 

Laughter yoga (欢笑瑜伽) is a new way for people to take exercise. It's popular around theworld these {#blank#}1{#/blank#}(day). Laughter is {#blank#}2{#/blank#}easy way to make you happy and healthy.

Dr Madan Kataria {#blank#}3{#/blank#} (start) the first laughterclub in 1995 in India. It was a {#blank#}4{#/blank#} (noise) club, but it wasfree to join the club. Now there are over 5, 000 laughter clubs with differentrules in the world. World Laughter Day comes {#blank#}5{#/blank#} the first Sundayin May every year. Many people come together to laugh and they {#blank#}6{#/blank#} (be) happy on thatday. Of course, teachers can not be strict {#blank#}7{#/blank#} them.

Dr Madan Kataria said,"Laughter is good for your body. It can also help you feel good, even ifyou feel very terrible on {#blank#}8{#/blank#} (rain) days sometimes. Ifyou spend more time {#blank#}9{#/blank#}(laugh), you will be healthy. "So more and more people would like {#blank#}10{#/blank#} (join) the club to keephealthy.

Classical Chinese gardens are purposely designed so that no matter where you stand, you can never see the whole thing at once. The mystery and the discovery have helped the classical gardens of China, especially those in Suzhou, remain popular attractions after all these years. 

Put simply, the aim of a classical Chinese garden is to deepen one's admiration of nature. Besides just relaxing in nature, the classical Chinese gardens have another purpose—to inspire artistic expression like poetry, literature or painting. Nearly all Chinese gardens feature the things in the list below. 

Water

Water is a necessary thing that no Chinese garden can go without. The water in a garden typically symbolizes a lake or even the ocean. Water can even symbolize communication, movement and dreams. 

Rocks

Large rocks typically symbolize mountains. Many of the rocks in the Suzhou gardens come from Lake Tai, having been shaped by the flow of water over thousands of years. Smaller rocks are often on show in the fancy halls at a garden's entrance. This shows the appreciation the garden owners had of these rocks. 

Plants

You can't have a garden without plants. Different plants and flowers are used for either symbolic or aesthetic (美学的) purpose—or both. Bamboo, for example, represents strength. Flowers, meanwhile, add color to a garden, with each carrying a symbolic meaning of its own. 

Gates & Windows

Gates of different shapes divide different parts of a garden. The most common type of gate, the moon gate, is simply a circle. Windows are placed throughout the garden to allow the passage of light. You can also catch a glimpse of interesting trees or rocks on the other side from the window. 

Pavilions (亭)

In Chinese gardens, pavilions are usually placed in some of the best viewing places. Sometimes a pavilion is placed where one can see the reflection (倒影) of the moon at night, or in the best place to listen to the sound of rain on the leaves above. In the past, pavilions were also used as places for garden owners to reflect, paint and write poems. 

Socrates was a scholar, teacher and philosopher, who was bon in ancient Greece. He is c{#blank#}1{#/blank#} as the main source（来源）of Western thought. 

Socrates had his own way of teaching. To help his pupils s{#blank#}2{#/blank#} a problem, he would break it down into a series of questions. He was c{#blank#}3{#/blank#} that, by answering the questions, the pupils would find out the t{#blank#}4{#/blank#} by themselves. One of his famous sayings is "I cannot teach anybody anything. I can only make them think."

Socrates was sentenced（判决）to death for corrupting（使堕落）youth with his teaching. He could have saved himself. His pupils tried to get Socrates out of prison. However, Socrates refused their help. He chose to o{#blank#}5{#/blank#} the sentence of the law. He drank poisonous wine（毒酒）and died. 

At school, students learn some different subjects in the classroom. These days, a new subject becomes popular. That is school gardening. Students learn it outside the classroom.

      ▲      . Some teachers, however, are finding good ways to make it work. The school garden may be very small. However, students can have a lot of fun in it. At first, teachers decide(决定) what vegetables to grow. Then they grow them with students. It is nice for the students to get a tomato, wash it and cat it right in the garden, so tomatoes are their favorites.

Gardening is not only an interesting subject, but also a practical subject for students. It teaches students a lot. Some vegetables are easy to grow, but others need a long time. This can teach students patience(耐心). With gardens, kids get to see a beginning, a middle and an end to their work. When working with others, they can also learn some teamwork(团队合作) skills.