There are 115 distinct (独特的) species of pine trees with 35 native to North America. Pines are defined as evergreens with long, needle-like leaves and are only native to the northern hemisphere. Pine trees are an adaptable and tough species that can survive in many conditions where other plants cannot. The average pine tree is 45 to 60 feet tall, but some are nearly twice as high.

Western White Pine

    The western white pine grows the tallest of any pine tree, reaching up to 110 feet in height. They have blue-green needles arranged in bundles (束) of five and produce a long cone (球果).

Bristlecone Pine

    The bristlecone pine grows slowly, reaching about 20 feet tall. It is one of the oldest species of pine.

Mexican Pine

    The Mexican pine can grow to 50 feet tall, with long, slender needles that drape (下垂) off it like a weeping willow (柳树). Often nicknamed the “willow pine”, it is native to Mexico. Its leaves can droop up to 12 inches long.

Sugar Pine

    The sugar pine is another of the large pine species, such as the bull pine, but it also has the largest cones of any pine species, at 10 to 20 inches long. It grows from Oregon to California and is often used for construction.

Jack Pine

    The jack pine is one of the smallest species of pine with rare leaves. Compared with the pines mentioned above, it doesn't seem to belong in the family. It is considered a member of the scrub-pine family; it prefers sandy soil.

    Mrs. White lived in a town of England. Her husband died three years ago and one of her children worked in the capital and the other three lived in another town. Her husband didn't leave her much money and she had to live a simple (简朴) life. Sometimes her children went to see her during their holidays, but they stayed with her for only two or three days.

    One winter morning the old woman got up early. She was going to buy some food in a shop. And when she came out, she found there was much snow in the street. She had to sweep it away. And suddenly she found a dying dog at the comer of the house. She picked it up and took it into the house quickly. She put it near the fire and gave it some milk and bread. At first the poor dog ate nothing and that afternoon it drank some milk and three days later it was all right. Now the old woman found it was a beautiful dog. And she liked it very much and took it everywhere she went. A week later she went shopping with her dog. At a bus stop a young man was eating fish and chips. The little dog became very excited at the smell of the man's lunch and began jumping up at him.

    “Do you mind if I throw it a bit?'' asked the young man.

    “Not at all,” answered Mrs. White.

    Having heard this, he picked up the dog and threw it over the wall.

    When was the last time you told someone they inspire you to go to work each morning?

    Teachers at Oak Park High School in Kansas City, Missouri, did just that this September, when they pulled individual students out of class to tell them just how much they appreciated them.

    The students' reactions, which were captured (捕捉) on video and shared on YouTube in a now-viral video, ranged from shy thanks to hugs and tears.

    “I have been challenged to find a student who makes me want to come to school every day,” says one teacher in the video, “and that's you.”

    Jamie McSparin, a teacher in charge of the school's academy program for at-risk sophomores （二年级学生）and juniors, posed the challenge, writes ABC News.

    “Initially when we pulled the kids out, they all thought they were in trouble,” McSparin told ABC News. “Any teacher-student interaction always seems to be negative (消极的), and that was something that bothered me, too. No matter if they're a good kid or a trouble maker or anything, they always thought they were in trouble,” she says.

    McSparin says she got the idea for the project after attending a professional development workshop this summer called the power of positivity.

    “I like the idea of letting students know they are appreciated, because we do appreciate them, I just don't think we say it enough,” she told local news outlet WDAF-TV.

    It's safe to say the challenge was effective.

    “I feel special,” said one of the boys in the video. “You should,” said his teacher. “You are special.”

    With all the wars, fighting and sadness in the world today, it's not only necessary, but also essential to have a good sense of humor just to help us get through each and every day of our lives. Putting a smile on someone's face when you know they are feeling down in the dump, makes me feel good and warms my heart.

    How would you feel if you could not joke around with your wife, husband, child, co-worker, neighbor, close friends, or even just someone that you are standing in line with at your corner store? I am always saying things that make others smile or laugh, even if I don't know the person I'm joking around with. My Grandma always found humor in everything she did, even if it was the hardest job anyone could imagine. This not only relieves stress in any situation, but also is common courtesy(礼貌)to speak to others that are around you.

    I know of a few people that don't have a funny bone in their bodies, as they say. Everyone around them could be rolling on the floor after hearing a great joke and they would sit there without the slightest smile on their face. They don't get the joke that makes others laugh. I am busting a gut while they just sit there, looking at me as if I were from outer space. How can people not get a really funny joke?

    Laughing is essential to keep your stress levels under control. Without humor we would find ourselves with a lot of psychological problems, or on a lot of medications to keep us from going crazy. There is too much sadness in this present world. It drives people crazy. We all need to find a way to ignore the sadness and bring a little light into our lives. So, I believe our best medicine is to get together and tell some jokes and have some fun laughing together.

    I start every summer with the best of intentions: to attack one big book from the past, a classic that I was supposed to have read when young and ambitious. Often the pairings of books and settings have been purely unthinking: "Moby Dick" on a three-day cross-country train trip: “The Magic Mountain” in a New England beachside cottage with no locks on the doors, no telephones or televisions in the rooms, and little to do beyond row on the salt pond. Attempting "The Man Without Qualities" on a return to Hawaii, my hometown, however, was less fruitful: I made it through one and a quarter volumes (册), then decided that I'd got the point and went swimming instead.

    But this summer I find myself at a loss. I'm not quite interested in Balzac, say, or “Tristram Shandy.” There's always War and Peace, which I've covered some distance several times, only to get bogged down in the "War" part, set it aside for a while, and realize that I have to start over from the beginning again, having forgotten everyone's name and social rank. How appealing to simply fall back on a favorite once more into “The Waves” or “Justine,” which feels almost like cheating, too exciting and too much fun to properly belong in serious literature.

    And then there's Stendhal's “The Red and the Black,” which happens to be the name of my favorite cocktail of the summer, created by Michael Cecconi at Savoy and BackForty. It is easy to drink, and knocking back three or four seems like such a delightful idea. Cecconi's theory: "I take whatever's fresh at the green market and turn it into liquid." The result is a pure shot of afternoon in the park, making one feel cheerful and peaceful all at once, lying on uncut grass with eyes shut, sun beating through the lids…

Early or Later Day Care

    Many young parents are confused about whether their children should have early day care, and there have always been different views on this subject.

    The British psychoanalyst John Bowlby believes that separation from parents during the sensitive "attachment" period from birth to three may scar a child's personality and lead to psychological problems in later life. Some people have drawn the conclusion from Bowlby's work that children should not be subjected to day care before three because of the parental separation it causes, and many people do believe this.

    According to Bowlby, a great deal of psychological harm can occur when young children are separated from their parents. If they are left without touch for a while, they will have a higher stress level. Parents' influence on their children's well-being may never be greater than during the earliest years of life, when a child's brain is developing rapidly and when nearly all of her or his experiences are shaped by parents and the family environment.

    However, there are critics. Some anthropologists (人类学家) point out that the love affair between children and parents found in modern societies does not usually exist in traditional societies. There has been a long history of the fact that father and mother did not bring up their children alone. Plato, around 394 B.C., argued that a system of early child care would free women to participate in society. Results from Israeli and Dutch studies show that child-raising duties are more evenly distributed among a broader group of people.

    Besides, studies have reported that early day care has a neutral or slightly positive effect on children's development. They learn the benefits of being socially smart, understanding the concept of sharing and caring. They promote concentration skills, which is very important in their learning. There are games where children are taught basic language and mathematical skills through stories and everyday examples.

    Common sense tells us that early day care would not be so widespread if children had problems with it. But Bowlby's analysis raises the possibility that it has delayed effects. The possibility that such care might lead to more mental illness 15 or 20 years later can only be explored by the use of statistics. Whatever the long-term effects, parents sometimes find the immediate effects difficult to deal with. Children under three dislike leaving their parents and show unhappiness. At the age of three almost all children find it easy to go to the nursery. The matter, then, is far from being clearly known, though experience and available evidence indicate that early day care is reasonable for young children.