Green is an important color in nature. It is the color of grass and the leaves on trees. It is the color of most growing plants, too.

Sometimes, the word green means young, fresh and growing. Sometimes, it describes something that is not yet finished or plants that are not ripe.

For example, a greenhorn is someone who has no experience, who is new to a situation. In the fifteenth century, a greenhorn was a young cow or ox whose horns had not yet developed. A century or so later, a greenhorn was a soldier who had not yet had any experience in war (战争) .By the eighteenth century, a greenhorn had the meaning it has today——a person who is new in a job.

About one hundred years ago, greenhorn was a popular expression in the American west Old—timers used it to describe a man who had just arrived from one of the big cities in the east. The greenhorn didn't have the skills that he would need to live in the hard, rough country.

Someone who has the ability to grow plants well is said to have a green thumb. The expression comes from the early nineteen hundred.

A person with a green thumb seems to have a magic touch that makes plants grow quickly and well. You might say that the woman next door has a green thumb if her garden continues to grow long after your plants have died.

The Green Revolution (革命) is the name which was given some years ago to the development of new kinds of rice and other grains. The new plants produced much larger crops. The Green Revolution was the result of hard work by agricultural (农业的) scientists who had green thumbs.

    Let me tell you something about sharks. Sharks are among the oldest animals in the world. There are over three hundred and fifty different kinds of sharks in the world. Most sharks are about two meters long and live in the oceans.

    A shark can smell something in the water, for example, the blood of animals. That helps them find their food. Sharks mainly eat fish, other sharks and plants in the ocean.

    Most sharks bite (咬)people by mistake. They think a person is a large sea animal. When the sun goes down or comes up, sharks are looking for food. So at these times people shouldn't go swimming in the ocean. Today people kill sharks for food and their skin. The number of sharks in the world is dropping fast.

    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 popularity of online fitness (健身) increased greatly. The number of people using fitness apps has risen rapidly. {#blank#}1{#/blank#} Even though people exercise separately at home, they often do it together through the Internet. Online fitness allows people to exercise at any time and anywhere without going to a gym (体育馆) or a fitness center.

According to a report from Douyin, the number of fitness videos in 2021 increased by 134 percent, while followers of fitness trainers went up by 208 percent compared with the year before. {#blank#}2{#/blank#} These trainers do a great job in both teaching and leading people to exercise more.

In the past, TV exercise programs were popular, but now online fitness videos have made exercising even more popular because they are easy to learn. {#blank#}3{#/blank#} He started an online fitness course to teach people how to exercise at home, and now his fans call him the "personal trainer champion (冠军)".

A report from Jingdong in 2022 showed that sales of yoga (瑜伽) and dance products have grown rapidly since March. {#blank#}4{#/blank#}

The Chinese government has also organized online competitions. {#blank#}5{#/blank#}

What will our life be like in the future? Each family will have a 1 in the future.You can ask it to do everything 2 you. It will serve you 3 hours a day.The robot will look like a (n)4 . It can 

talk with you when you are 5 .You won't know whether(是否) it is a 

human(人类)or a robot when you 6 it on the street.

People will have 7 time to work and more time to travel. The 

vehicles (交通工具) in the future will fly freely in the sky because every 

vehicle will have wings(翅膀) with it.They will 8 you to a lot of places. You can go to 9 during your travels when you feel tired. All 

Vehicles will not be 10 because the robots drive them.

NASA has been trying hard to explore the space. The recent developments include, the launch* of the James Webb Space Telescope, the successful asteroid* hit by the Double Asteroid Redirection Test (DART) spaceship, and the launch of the most powerful rocket ever built for the Artemis mission. The James Webb Space Telesco pe is the biggest and most powerful telescope ever built. It can see through dust in the universe and find new stars hiding inside those clouds. Even more exciting, it will try to find signs of Life on planets far away!

The telescope has been working for more than a year and has caught some amazing images and data. One example is an image of a huge star called Wolf- Rayet 124, which weighs about 10 times heavier than our sun, reported the Space website.

DART spaceship is another breakthrough for NASA. It will be used to keep Earth safe from asteroids. In September 2022, NASA tested it by hitting an asteroid called Dimorphos. The goal was to change its orbit*

Finally, we have the Mega Moon Rocket! This rocket is the most powerful one ever made and it's being used to help us get closer to Mars. NASA successfully launched it on Nov 16, 2022, and it had a 26- day trip around the moon. This is the first step of NASA's Artemis mission, which plans to set up a base on the moon for people to use in the future.

Despite the program's high cost, NASA believes that the Artemis project is worth it as it will be a key next step in the story of human exploration. As NASA administrator Bill Nelson told the BBC," This time we' re going to learn how to live in that bad environment for long periods of time all with the purpose of one day going to Mars."