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.

    Princeton University is a vibrant (充满生机的) university. It is the fourth oldest college in the United States and an independent institution that provides undergraduate and graduate instruction in the arts and humanities, social sciences, natural sciences, and engineering. As a well-known research university, Princeton seeks to achieve the highest levels in the discovery and spread of knowledge and understanding. At the same time, Princeton is different among research universities in its commitment to undergraduate teaching.

    Academics

    Faculty (教员), including full time, part time and visiting: 1,238 (spring 2016)

Undergraduate student-to-faculty rate: 5:1

    Departments: 36

    Schools within the University: School of Architecture, School of Engineering and Applied Science, Woodrow Wilson School of Public and International Affairs

    Library

    Princeton University Library consists of the Firestone Library and nine buildings across campus. The library's collections include more than 8 million books and impressive rare books, prints and other materials that require special handling. The library's extensive electronic resources include databases and journals, images and digital maps. Exhibitions of the library are free and open to the general public.

    Campus Life

    A vast range of cultural9 educational, athletic and social activities are available to Princeton students. Getting involved in campus life is the quickest way to become a part of the University community, and to create one's own Princeton experience. Campus life activities are built around the concepts of encouraging each community member to display his or her talents and to learn to respect all members of our community.

    Aid Program

    Our aid program is designed to encourage all qualified students—regardless of financial circumstances-to consider applying for admission to Princeton. Any family who feels they may need help to pay for a Princeton education is welcome to apply for aid.

    For more information, please visit: http://www. Princeton.edu.

    Women make better drivers than men for many reasons. Why is that? If you ask me, I'd like to say, men know that women are better drivers but do not have the courage to admit the truth—women are queens of the road.

    Unlike men, women stop for directions when they have no idea as to where they are going. We don't drive around for hours pointlessly wasting a tank of gas only to find ourselves heading in the wrong direction. Have you ever been in a car with a man who is lost? He tells you to shut up when you begin to open your mouth. And every five minutes or so he takes a turn going forty-five miles per hour only to find out he's made another wrong turn.

    Speeding is what men do best on the road. There is a reason why men get more speeding tickets than women. Not because we trick to get out of tickets but only because we don't get pulled over as frequently. We don't speed. We have more intelligence than senselessly to put our own lives as well as the lives of others in danger.

    My largest issue with male drivers is how a majority of them drive with one hand on the wheel and the other hand doing only God knows what. The seat is backed as far as possible, and they're totally lost into loud music beyond a necessary level. You don't ever see women driving like that.

    I feel that the above evidence more than proves my points that women are not only better drivers but also safer drivers than men. We women rule the road. Oh, and men, if you want to continue criticizing（批评）women for being bad drivers, bring it on.

    Unlike most other holidays, the history of April Fools' Day, sometimes called All Fools' Day, is not totally clear. The only point in time that can be agreed on as the beginning of this tradition was 1582, in France. Before that year, the New Year was celebrated for eight days, beginning on March 25th. The celebration reached the highest point on April 1st. With the reform of the calendar under Charles IX，the Gregorian calendar(公历，阳历) was introduced, and New Year's Day was moved to January 1st.

    However, because in those days communications were not as developed as they are today, many people did not receive the news for several years. Some people refused to accept the new calendar and continued to celebrate the New Year on April 1st. These backward people were considered "fools" by other people. They  were often sent on "fools" errands(徒劳无益的工作)  or were made the targets of jokes.

    This developed, over time, into a tradition of playing a trick on someone on the first day of April. The tradition eventually spread to England and Scotland in the eighteenth century. It was later introduced to the American colonies of both the Britain and France. April Fools' Day thus developed into an international fun feast, so to speak, with different nationalities specializing in their own kind of humor at the expense of their friends and families.

    The morning after an evening struggle to care for my three-year-old daughter, I couldn't wait to get her to school. I, as a mother, was tired from the anger and her inability to communicate because of her slowed language development.

    As I accompanied her into the car, I felt desperate. Nothing was right with our world. She'd been born around the same time when the nation was witnessing the birth of another Great Recession. My job and my house had been victims. Then this happened. My child's language delay was identified, but doctors struggled to properly help her, I felt like we both needed to he rescued.

    I returned that afternoon as disenchanted with the little girl 1 loved as when 1 left. Walking slowly toward the school's playground gate, I found her preschool teacher racing to greet me.

    “You should have seen her today!” His breathy words were supported by excitement. I didn't interrupt. “See that climber.” He pointed to a wooden piece of playground equipment that looked like a rock wall. I nodded. “Well, every day since she started school, she's tried and failed to make it to the top.” He took a breath. “And today she did it!”

    He expressed his joy just as he'd witnessed her conquering Mount Everest! “She cheered and celebrated! I wish I'd recorded it!” His words comforted me. My daughter had conquered her mountain.

    As she ran toward me, I recognized something I hadn't before. I saw her perseverance(毅力). I saw her strength. I saw a Hero.

    Everyday greatness celebrates ordinary people who do unusual things in big and small ways, showing courage, kindness, love and selflessness. We encourage you to click these brief accounts and invite you to share your own story.

    In today's world of smart phones and laptops, most people have at least one time-telling thing with them. Since these digital products are so common, is time running out for the 500-year-old watch? According to some consumers, the answer is yes. New Jersey teenager Charlie Wollman says a watch is “an extra piece of equipment with no necessary function.” Many young adults think so and use their smart phones to tell time. It is said that fewer young people wear watches today than ten years ago. As a result, some people say that the watch industry is at a crossroads.

    However, watchmakers optimistically say that watches redeem（挽回）popularity when consumers reach their 20s and 30s. By then, they are willing to spend money on a quality watch that doesn't just keep good time. Fifty years ago, watchmakers took pride in their products' accuracy（精确性）. But in recent years, the watch industry has changed itself into an accessory(配饰) business. And today, the image a watch conveys has become more important than the time it tells.

    "Complications" features that go beyond simple timekeeping — are an important part of a watch's image. Today's watches offer lots of features that meet almost any personality. These features include compasses, USB drivers, and even other functions that measure the effectiveness of golf swings!

    Creativity also plays a key role in designing today's watches. For example, Japanese watchmaker Tokyoflash makes watches that don't even look like watches. The company's popular Shinshoku model uses different color lights to tell time. It looks more like a fashionable bracelet than a watch.

    Whether a watch conveys fashion sense, creative talent or a love of sports, consumers want their watches to stand out. Nowadays, everyone has the same kind of gadget（小玩意） in their bags, so people want to make a statement with what's on their wrists. Will this interest in wrist fashion last? Only time will tell!