2 . In 1969, when Neil Armstrong first landed on the Moon, many people thought soon we would be regularly visiting other planets.     1     The reality is that space exploration is extremely difficult and dangerous. Some people believe it is a waste of the public purse and does nothing to improve our lives. Why do we continue to explore space, then?

    2     From the very early days of human life on the Earth, our curiosity about the unknown has kept us adventuring into new places. While space exploration is a reality, we remain curious about the mysteries of the universe. With each space mission comes greater insight, thus motivating us to continue along the same path of adventure.

With technologies developed for space exploration, we can solve some big problems facing mankind, making our lives safer and easier.     3     Originally applied to the space shuttle launch, they have also been set up in the cities with a high frequency of earthquakes to protect buildings and save lives.

Although space exploration demands huge investment, it can actually bring great economic value. The global space economy is increasing by billions of dollars every year.     4     Jobs in the space industry go far beyond the astronauts. There are many support staff on the ground, such as engineers and research assistants.

Moreover, the amazing work can provide education and inspiration for the next generation. Such wonders as a space shuttle launch or astronauts walking on the Moon are incredibly inspiring to witness. These moments shape children's lives forever and motivate them to become the scientists and engineers of the future.     5    

3 . Almost all of us are guilty of spending too much time on our devices so we don't have enough time to enjoy the world around us. We know that little bit of truth might be hard to take in and you might be thinking of shutting off your device now out of guilt.    1     We've got some tips on limiting your screen time so you can improve your quality of life.

●Set time out to physically lock your phone. One of the keys to cutting down your screen time is to be disciplined. Picking out a period of time each day to step away from your device is a great way to limit screen time.     2     Of course, this won't prevent you from picking up your phone to scroll through social media or play games. You may also turn your phone off and place it in another room for the amount of time you'd like to stay off of it.

●Monitor screen time reports on apple devices. On iPhones and other Apple devices, you may have noticed that a Weekly Screen Time Report is provided, which gives you the average hours you spend per day on your screen. It even shows you which apps you are using and how frequently you use them. Monitoring this will help you be aware of the amount of time you spend on your device.    3    

●    4     The apps like Facebook, Instagram and YouTube will send you a reminder when it's time to log off. This feature is easy to set up and definitely holds you accountable for managing your time.    5     If so, you're sure to be on the right track for success in your academic and personal life!

5 . Cayce Zavaglia is an artist with a unique transformation to her work.    1    Painting with tiny needles is not as fast as painting with a brush.    2    It takes two months-nearly 200 hours to complete a portrait.

    3    Once she decides, she invites that person to her studio and takes hundreds of photographs. She studies the way the light falls across the person's face. After many hours of studying the photos, she chooses the perfect one for her portrait. Next, she enlarges the photo on a canvas(画布). Then, she matches the colors in the photo and the stitching begins.

Cayce starts with the hair and forehead, then moves on to the shoulders and clothing, and finally the face. The human face is what she most enjoys creating in her art.    4    In a portrait of her baby daughter, the skin appears soft and smooth. In a portrait of her dad, the stitches show a wrinkled and aging face.

Cayce believes her success depends on three things: her choice of colors, the length and direction of the stitches, and her ability to make the portrait look true. She loves the surprise when people view her art. From a distance, people believe the portraits are painted.    5    

6 . How to learn with mind maps

Flashcards may help you memorise short facts in a flash. But for more complex subjects, you'll need a study method that can help you understand, summarise and memorise loads of information effectively and without wasting any study time     1    .

A mind map is a diagram that organises facts and ideas around one central subject. It combines words, pictures and lots of colours to summarise complex information in a visual way. You can use mind maps to: study complex topics; brainstorm for a class presentation; summarise a book; or memorise lists of foreign language vocabulary.     2    : they can help you plan your future career, choose the right university or weigh up your choices for a gap year.

Mind maps activate many different parts of your brain, which leads to a deeper understanding and better memorisation of the work.     3    . But the opposite is true. As you make your map, you are already analysing and categorising information, which will save a lot of time for you.     4     Instead, you can see the entire topic on one page.

However, there is a condition. Research shows that, for mind maps to work effectively, you have to be motivated to use them.     5    .

8 . Astronauts drink their own pee (尿)—after it's been cleaned.     1     Many experts, though, argue that recycling pee and other waste is an excellent and safe solution when there isn't enough fresh water to go around.

    2     All of the water that astronauts use to drink, brush their teeth, or make coffee comes out of one limited container that has to be resupplied—from Earth. To help conserve water, the waste from sinks, toilets, and even the pee from lab animals on board flows into a recycling system. First, the water goes through a series of filters(过滤器) to get rid of large particles(微粒) and impurities. Then, chemical reactions remove poisonous chemicals and kill any bacteria or viruses.     3    

Chris Hadfield, who lived on the space station for five months, says, "Before you feel uncomfortable with the thought of drinking your leftover wash water and your leftover pee, keep in mind that the water that we end up with is purer than most of the water that you drink on a daily basis at home."

Astronauts, however, tend to be more adventurous than the average person. On Earth, cities in very dry parts of the world have attempted to introduce wastewater purification systems.     4     Citizens recoiled(退缩) in disgust. Despite scientific evidence that the water is clean, many people just can't get over the fact that it once flowed through a toilet. In the 1990s, activists in San Diego and Los Angeles campaigned against "toilet to tap" water.     5     In a survey of 2,000 Americans, 26 percent agreed with the statement: "It is impossible for recycled water to be treated to a high enough quality that I would want to use it."

9 . Different types of volunteer opportunities for teenagers exist in a wide range of time periods and fields.     1     Types of these opportunities include working with young children, pets, or the elderly.

After school opportunities can help teenagers develop a sense of responsibility and a good work attitude. Volunteer opportunities for teenagers looking to volunteer after school include private teaching and volunteering as an instructor.     2    

During the holidays, a wide variety of volunteer opportunities exist to help give back to the surrounding community during times of need.     3     Helping to organize a toy drive or hand out donated gifts is another way for teenagers to get involved during the holiday season.

Volunteering to help pets is an option for teenagers with a love of animals.     4     Teenagers who intend to enter professions handling animals can benefit from the learning experience of handling a wide range of animals while sharing love and care with animals in need.

    5     Nursing homes can use teenage volunteers for arts activities and regular visits. In addition, regular volunteer opportunities for teenagers can include visiting elderly neighbors, running errands for those who have a hard time getting out, and helping them around their own homes with chores and basic upkeep, such as mowing the lawn.

10 . The relationship between parents and a child is among the most important in a person's life. Of all the people in the world, but parents are the only ones who are always there for us, no matter what happens.

But why is it that some teenagers act like their parents are the biggest enemies?     1     Once the journey to independence begins, the parents are going to be less acceptable than they used to be.

    2     As kids, we learn almost everything about the world from them. But once we reach our teenage years, we begin to feel like we don't need their help any more. And at the same time, everything from the clothes they wear to the way they speak makes us feel embarrassed.

    3     Naturally, they have been around a lot longer and they know many more things. So if our parents are always telling us what to do, there's a good reason for this. They just want to protect us from making the mistakes they have made.

Any parents' wish is for their children to be safe and do well.     4     And while it might seem like all our parents do is to annoy and criticize us, we should listen to their words.     5