After spending three months in and out of the hospital with numerous health issues, Donald Austin had his leg partially cut off. He was relieved to finally be able to go home after just four days recovering from the operation. When he reached his porch, though, the joy drained away.

    Donald thought he'd be able to make it up the steps to the front door on crutches, but his strength and balance weren't as strong as he'd hoped. The wheelchair was too heavy for his wife, Jennifer Austin, to lift up the steps, even when his mom offered a hand to help. Donald ended up on the concrete, the family feeling totally at a loss. They were out of strength and out of options. Just then, a car caught the family's eyes. It had driven past once but was slowly circling back. The stranger, Steven Smith, pulled up and asked if he could help. Relieved, the family watched Smith lift Donald inside and lay him safely on a couch.

    But the Good Samaritan knew there was more to do. Smith figured this wasn't the only time Donald would need to climb those steps. So the next day, Smith, who's an ordinary worker, came back and asked if he could build a ramp(斜坡) in front of the house. With his dad and a couple more helping hands, Smith set up a ramp over the steps to make the home wheelchair accessible. The act of kindness brought the family to tears.

    “This stranger has saved the day for us twice within 24 hours. He also brightened our spirits that had become increasingly dimmed over the difficult months,” Jennifer wrote on Facebook. “There is a sense of optimism back in our home because of his kindness.”

    You may not know a lot of people when you start high school. Maybe your friends from middle school are going to a different high school. Even if you know other freshmen(新生), you still feel nervous that you don't know any upper-classmen. How are you going to make friends among this sea of unknown faces?

    Most high schools hold a freshman orientation(训练) before school actually starts. These are helpful not only because you learn your way around the building and get to meet some of your teachers, but you also get to meet fellow freshmen. That way, when you show up on your first day of school, you may already recognize a few familiar faces.

    When you talk to people at orientation, you'll probably find that a lot of them are feeling just like you are. They're all new to the school and don't know what to expect. Talking about a common concern with your classmates can help you develop friendships.

    The work in high school is something freshmen are probably worried about. The work in high school builds on what you learned in middle school, giving you a more advanced knowledge of many subjects. So you may find you have more work to do or that it's a bit more challenging. If you ever find your work too difficult, teachers can give you extra help.

    High school also has more after-school activities than middle school did, such as clubs, music and theater groups and sports teams. This is a good time to explore your interests and try new things.

    Middle school taught you the basics of academics, time management, and social skills while providing you with a little extra support and guidance. High school gives you the chance to learn how to be more independent and responsible.

    Are you scared about moving up to senior high school?It can be a new experience,but you shouldn't worry.We've put together a guide on how to survive the first week.

    You're not alone

    Remember everybody else in your year is in the same boat.They may not realize it,but they're just as nervous as you are.Moving to senior high is an opportunity,not a problem.Things are different and all you need to do is be polite and learn the new rules.

    Teachers are ready to help!

    If you're unsure what to do or are worried about anything then you had better ask for help.Teachers are probably the best people to turn to as they're experienced in helping new students.Some senior high schools also have a “friends system”.If your school has this,then you will be paired with an older student.They will look out for you and help you if you have any problems or questions.

    All change

    There are lots of differences between junior high school and senior high school.You'll have a homework diary or a student planner.You will have your lessons with different teachers in different rooms.You will have homework for different subjects on different days,so make sure you get organized.Make sure you have a copy of your school timetable written down so you know which rooms your classes are in and on which days you will have your different subjects.

Other points

    If you've got an older brother or sister at the school then ask them for advice.

    Be yourself! It sounds simple,but people will know you much better if you just act naturally.

    Having early nights makes a difference and you'll find it easier to get up in the morning!

    A new study warns that about thirty percent of the world's people may not have enough water by the year 2025.

    A private American organization called Population Action International did the new study. It says more than 335 million people lack enough water now. The people live in 28 countries. Most of the countries are in Africa or the Middle East.

    P-A-I researcher Robert Engelman says by the year 2025, about 3,000 million people may lack water. At least 18 more countries are expected to have severe water problems. The demand for water keeps increasing. Yet the amount of water on the earth stays the same.

    Mr. Engelman says the population in countries that lack water is growing faster than in other parts of the world. He says population growth in these countries will continue to increase.

    The report says lack of water in the future may result in several problems. It may increase health problems. Lack of water often means drinking water is not safe. Mr Engelman says there are problems all over the world because of diseases, such as cholera, which are carried in water. Lack of water may also result in more international conflict. Countries may have to compete for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning.

    The Population Action International study gives several solutions to the water problem. One way, it says, is to find ways to use water for more than one purpose. Another way is to teach people to be careful not to waste water. A third way is to use less water of agriculture.

    The report also says long-term solutions to the water problem must include controls on population growth. It says countries cannot provide clean water unless they slow population growth by limiting the number of children people have.

For nearly two decades, a thin, sun-burnt postal worker could frequently be seen carrying packages along a dangcrous mountain trail in the Taihang Mountains.

The 10-kilometer-long route, which is between 20 centimeters and 1 meter wide, is known as the "cat road" by locals, meaning that it is so dangerous that only cats could walk on it. Whereas, Zhao Yuefang, a postal worker in Ewu township in Huguan county, Shanxi province, had to walk the route every day to deliver mail.

Every day at the crack of dawn, he would start his journey along the "cat road". From picking up the day's post to delivering it to villagers and returning along the same route, it took Zhao four days. During rainy and snowy seasons, the mountain road, part of which hugs the cliffs, would become slippery and dangerous. One day in the winter of 2003, the "cat road" was covered in thick snow and he slipped off the trail. Fortunately, he was able to stop his sharp descent by grabbing a tree branch and slowly managed to climb to safety.

By 2012, Zhao had walked more than 300,000 km and delivered over 800,000 pieces of mail. Born and raised in the deep mountains, Zhao truly understands the significance of mail deliveries to villagers. "They depend on the mail to keep in touch with the outside world," he said. "Their sheer joy written on their face while receiving any post struck me," he added.

In 2012, a 67-km-long tourist highway was built and gone were those days when Zhao risked his life to walk on the "cat road". But Zhao was even busier than before. "The number of packages I handle daily now exceeds the number I used to deal with in the past," said Zhao, adding that villagers are turning to online shopping and ordering more and more goods by post.

If you're after a quick snap, if you're out and about, here are a few brilliant instant cameras to choose from.

Instax Mini 12

Made by Fujifilm, the Instax Mini series of cameras is ideal for taking quick snaps and getting high-quality credit card sized photos. The Mini also comes with built-in flash, a close-up lens (镜头) and selfie lens for taking those perfect shots.

The camera comes in a range of bright colours, including sky blue and clay white.

Polaroid Go

Famous for their cameras, Polaroid still makes instant cameras in the modern day, with a classic look. The Go comes with autofocus as well as a self-timer for effectively capturing the moment and producing quality Polaroid photographs for you to keep.

It also comes in a range of funky colors, if all black or white isn't your preference.

Instax Mini Evo

The Mini Evo combined camera and printer is a compact device with a 28mm lens that's capable of letting you review and edit photos before printing them.

Also featured is a back 2.7-inch LCD screen for viewing what you're shooting and the ability to print from your phone via Bluetooth.

Instax Mini 40

Coming just in a single but vintage black design, the Instax Mini 40 is a solid option for quick instant snaps, with a one-touch selfie mode and a more traditional looking camera, fixed with a 60mm lens.

It's also small enough to fit comfortably in your bum bag or pocket to take a quick snap if you're out and about.