Water is very important to living things. Without water there can be no life on the earth. All animals and plants need water. Man also needs water. We need water to drink, to cook our food and to clean ourselves. Water is needed in offices, factories and schools. Water is needed everywhere.

    There is water in seas, rivers and lakes. Water is found almost everywhere. Even in the desert part of the world, there is some water in the air. You can't see or feel it when it is a part of the air. The water in the seas, rivers and lakes is a liquid, the water in the air is a gas, and we call it water vapor (蒸汽).

    Clouds are made of water. They may be made of very small drops of water. They may also be made of snow crystals(结晶体). Snow crystals are very small crystals of ice. Ice is frozen water. It is a solid. There can be snow and ice everywhere in winter.

    Water may be a solid or a liquid or a gas. When it is a solid, it may be as hard as a stone. When it is a liquid, you can drink it. When it is a gas, you can not see or feel it.

    Pakistan should be everyone's tourist destination for 2018, but what if you already live there? Then perhaps you should consider visiting these five must-visit places for this year.

    Lake Saiful Muluk

    At an altitude of 3, 224m, surrounded by snowy mountains, the lake rewards those that make the three-hour uphill walk from Naran. You will find the pathway just above the free market, but the best choice is to get a jeep and share the costs with some other tourists; expect to pay about 700 rupees, worth it to view this natural beauty.

    Deosai National Park

    As another high point in Pakistan, it has an average altitude of 4,114m－the Deosai Plains are one of the highest plateaus (高原) in the world. If you make it to the park, you expect to find rich plants and wild animals. The breathtaking scenery on show at the plains is enough to make 2018 a memorable year.

    Naltar Valley

    Accessible via a 2.5-hour drive from Gilgit, well worth visiting. Covered with pine trees and other plants, it has a dreamlike feel about it. Various colors all year around make you fall in love.

    Shangrila Resort

    Right in the north of Pakistan in the central valley of Gilgit Baltistan. Locals call this a paradise (乐园), and that's what it feels like. No visit is complete without checking out the restaurant which is built in the structure of an aircraft.

    Rama Meadow (牧场)

    Doesn't feel like Pakistan at all, more like somewhere in Minnesota. Watch the sheep and cows feeding while clear water flows in streams from high in the mountains. Against Chongra's ice-covered peak, this little meadow is a piece of art.

Both humans and animals have enemies. It is easy for us to know the difference between our friends and our enemies. But can other animals do the same? Elephants can! They can use their sense of vision and smell to tell the difference between people who mean a threat and those who do not. In Kenya, researchers find that elephants react differently to clothing worn by men of the Maasai and Kamba ethnic groups. Young Maasai men hunt animals and thus mean a threat to elephants; Kamba men are mainly farmers and are not a danger to elephants.

In an experiment conducted by animal scientists, elephants were first presented with clean clothing or clothing that had been worn for five days by either a Maasai or a Kamba man. When the elephants noticed the smell of clothing worn by a Maasai man, they moved away from the smell faster and took longer to relax than when they noticed the smells of either clean clothing or clothing worn by a Kamba man.

Clothing color also plays a role. In the same study, when the elephants saw red clothing not worn before, they reacted angrily, as red is typically worn by Maasai men. Rather than running away as they did with the smell, the elephants acted angrily toward the red clothing.

The researchers believe that the elephants' emotional reactions are due to their different senses of smell and sight. Smelling a possible danger means that a threat is nearby and the best thing to do is run away and hide. Seeing a potential threat without its smell means that risk is low. Therefore, instead of showing fear and running away, the elephants express their anger and become aggressive.

    At the end of August this year I moved from London, UK, to a small town in Quebec, Canada, called Matane to work as an English language assistant. Patience is a word that has appeared in many forms over the past two months.

    I don't see myself as being the most patient person in the world but there was something that struck me on my first week of work. I had just finished a session with two students and just as they were leaving the classroom, one of the students turned back and said, "Thank you for your patience." That was an early reminder of the importance of being patient as a teacher. It also made me reflect on the language teachers that I have had over the years, ones that demonstrated a high level of patience and understanding that has shaped my language learning path. Moreover, it helped me to realize the importance of demonstrating patience in the classroom as it can be the difference between building someone's confidence in a language or breaking down their confidence entirely.

    Living my life constantly in French is not easy but the people of Quebec are very patient. They repeat things several times and they are more than happy to wait while I find the correct words to express myself and find the correct word order. It's a learning process but with the patience of others, the process is slightly less nervous. At the end of the day, making mistakes shows you are trying and I think that is greatly appreciated by Quebecers.

    When I first arrived in Matane I kept getting headaches from having to concentrate all the time due to the language and even overhearing other people's conversations was hard work! I had to keep reminding myself that it would take time, and two months later the headaches are a distant memory and my ears have become more tuned to their accent. The key is to be patient with yourself.

    Asking for help is a sign of strength rather than weakness. In American culture, the independent individual is seen as their ideal. As the University of Missouri at St. Louis states on its website under the heading Key American Values, “Americans have been trained since very early in their lives to consider themselves as separate individuals who are responsible for their own situations in life and their own destinies.” The value also makes them think they can do everything themselves, and makes them feel badly about asking for help when they need it.

    And when it comes to work situations, when they think about asking for help there, sometimes they fear that a request for help would make them look inept. While this has always been true for men, many women in the workplace have felt the need to try twice as hard as their male colleagues and do twice as much to get just as far and to prove their worth. Sometimes when we think about asking for help, our inner voices tell us, "See, if you admit you can't do this on your own, they'll see you for the imposter(骗子) you really are."

    But the fact is, even though individualism is on the rise, we can't do everything by ourselves and we shouldn't try.

    Apple founder Steve Jobs once told the Santa Clara Valley Historical Association about the power of asking for help, and how he "never found anybody who didn't want to help me when I asked them for help". He said, at the age of 12, he called Bill Hewlett, co-founder of Hewlett-Packard, on the phone after getting his number from the phone book and asking him for spare parts so he could build a frequency counter(计频器). And Hewlett agreed and offered young Jobs a summer job assembling frequency counters.

    "If you're afraid of failing, you won't get very far," Jobs said.

    Last year, when our three-year-old great-granddaughter Kylie was taken to see Santa Claus, she made sure to give him her wish list of toys. A week later, she ran into a different Santa in a mall. He stopped to ask what she wanted for Christmas. Kylie was surprised and let him know: "If you can't remember what I told you last week, how are you going to remember on Christmas Eve?!"

(Mary Paul, Milwaukee, Wisconsin)

    As my son Mike and I drove to the mall, we passed a Salvation Army Santa ringing his bell. "Mike," I said, "there's Santa!" He shook his head. "That's just some guy in a Santa suit," he said. It saddened me to think that maybe my son no longer believed in Santa, and we drove the rest of the way in silence. At the mall, we spotted another Santa greeting young believers. Suddenly, Mike took off toward him. Turning back to me, he shouted. "Now, there's the real Santa!"

(Michael E. Fahey, Huntley, Illinois)

    We immigrated to America from China when I was six. Because I was shy and didn't speak English, I had few friends. My days were spent at home with my brother. Sometimes we'd help our neighbor Mr. Mueller pull weeds. One Christmas Day, there was a knock at the door. Grandma opened it, and there stood a big fellow in red with a snow-white beard, laughing, "Ho, ho, ho!" He handed out presents and made us laugh. I had so much fun. It was years later when I learned that our special Santa was our neighbor Mr. Mueller.

(Joanne Tang, Litchfield Park, Arizona)