Maybe you have ever seen a cross. A cross can be a piece of jewelry or an image in a painting. But do you know the cross is a very popular symbol for Christmas？

    It came from the story of Jesus' death on the cross two thousand years ago in Jerusalem. Jesus was Jewish，and at that time Jewish people were under Roman rule. Jesus was badly punished because he declared to be the Son of God and the King of Jews. Surely，the Son of God could have saved himself from the death！But the Bible says that Jesus had a reason to die that day. It was in God's purpose that it would happen.

    Christians call the day that Jesus died “Good Friday”. At first，it is hard to understand how a terrible day could ever be called good. Well，the story does not end there. Jesus died and he was buried. But three days later，Jesus was alive，and the whole world was changed.

    Today，Christians everywhere remember this important time. They celebrate Easter. Easter is the day that Jesus rose from the dead. After his death on the cross，Jesus' body was placed in a tomb. On the third day from then，God raised him from the dead. Jesus stayed on earth physically for several weeks. Many people saw him. Easter is the happiest time of year for Christians because they believe that Jesus had victory over death and evil and that now he lives with God the Father in heaven. But before celebrating Easter, Good Friday should be remembered. Jesus died a horrible and painful death. He suffered, though he did nothing wrong. Christian believe that Jesus was God's substitute(代表) for humans， because humans all do wrong. He died because of humans and he died for humans.

    Christians often wear crossed around their necks of hang them in their homes because they believe it is a very important sign. The cross helps them remember how much God loves them. It helps them remember how much his Son had to suffer. Seeing a cross always makes them think of Jesus' death， and what it means.

    A good book is indeed the best friend of a person.The same goes for high—profile CEOs of world recognized companies as well.Let's have a look at the favorite books of some of the world-famous CEOs.

    Apple CEO—Tim Cook,Competing against Time by George Stalk Jr.and Thomas M.Hout

    This book is based on 10 years of valuable research done by the authors.It talks about how new concepts of managing time in new product development,production and sales provide companies with the advantages to succeed in this highly competitive world.

    Microsoft CEO(Former)—Bill Gates,The Catcher in the Rye by J.D.Salinger

    A few themes explored in the novel are rebellion（叛逆）,anxiety and confusion.It admits that young people are a little confused,but can be smart about things and see things that adults don't really see.Gates said,"I didn't actually read The Catcher in the Rye until I was 13,and ever since then I've said that's my favorite book."

    Oracle CEO—Larry Ellison,Napoleon by Vincent Cronin

    This book is considered by far the best biography ever written on Napoleon Bonaparte.Ellison said,"It's interesting to read about him for a couple of reasons: to see what an ordinary man can do with his life and to see how history can distort（歪曲）the truth entirely."

    OWE CEO—Oprah Winfrey,To Kill a Mockingbird by Harper Lee

    This book talks about how a little girl observes the people around her.Winfrey said,"I read it in eighth or ninth grade,and I was trying to persuade other kids to read the book.So it makes sense to me that now I have a book club, because I have been doing that probably since I read this book."

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    Millions of TripAdvisor users voted New York, Chicago, Charleston and Las Vegas as the top four travel cities in the United States.

    New York City

    More than 50 million people visit New York City every year. The five boroughs（行政区）－or regions of New York have some of the most easily recognized attractions in the world. Visitors whose things are tight can take a free boat from Manhattan to Staten Island for a great view of the Statue of Liberty and the Manhattan skyline.

   Chicago, Illinois

    America's third-largest city offers world-class museums, great food, sporting events and symbolic architecture－including Willis Tower, America's tallest building. But what places the Midwest city above others is comedy. It's well-known for comedy shows. The Second City theater is where many famous comedians get their start, including Mike Meyers and Tina Fey.

    Charleston, South Carolina

    Some say Charleston is one of the most beautiful and historic places in the United States. The coastal（沿海的）city has a very rich history. The Civil War began at its waterfront, at Fort Sumter, which visitors can explore. But present-day Charleston has a lot to offer, too. Conde Nast Traveler voted it the number one U. S. city, for its beautiful architecture, food, and friendly people.

    Las Vegas, Nevada

    The desert city of Las Vegas is known around the world for its casinos（娱乐场）and bright lights. Visitors stay at world-class hotels, eat at top chefs' restaurants, and usually see a spectacular show or concert.

    Every year on April 1, April Fools' Day is celebrated in many countries around the world. In France, it's called "Poisson d' Avril" or "Fish of April." In Scotland, the holiday is often called "Gowkie Day." In Iraq, the holiday is called Kithbet Neesan or "April Lie."

    History experts say people have celebrated April Fools' Day for a long time. Some believe the tradition comes from the ancient Romans more than two thousand years ago. It was a day of playing games and pretending to be someone else.

    Others say the day for fooling began in France in 1564, when King Charles changed the yearly calendar. He moved New Year's Day from April 1 to January 1. Many people did not know about the change because of communication problems back then. Some people continued to celebrate New Year's Day on April 1. Other people called them April Fools and played jokes on them.

    In the United States, April Fools' Day is just a day of joking and playing tricks on friends. These kinds of jokes are also called pranks. These jokes typically end in the prankster shouting "April Fools'!"

    Simple pranks, like telling a friend a funny lie or making prank phone calls, are still common. But, major companies also get in on April Fools' Day fun in a much bigger way. A few years ago, on April 1, Starbucks announced it was introducing new coffee cup sizes -- Plenta and Micra. The very large cups, bigger than a human head, remained useful for customers even after finishing all that coffee. According to Starbucks, the cups could be used as a rain hat, a pot for plants, or a lampshade.

    It did not take long for customers to catch on to the prank! More and more people use social media or smart phone apps to play pranks on their friends on April Fools' Day. One very annoying smart phone app, Cat Facts, sends funny facts about cats to your friends' phones, every day.

    Next time you raise an eyebrow at the views of your partner, friend, sibling （兄弟姐妹） or colleague, remember they could be helping to make you smarter. New research shows that intelligence is not fixed but can be improved throughout adulthood by family members, bright mates and intellectually challenging careers. The study challenges the commonly held belief that intelligence is fixed by the age of about 18.

    Scientific consensus suggests that intelligence is controlled by genes, with environmental factors such as schooling and nutrition playing a partial role up to this age. After this point, IQ scores become steady（稳定的）. But James Flynn, professor of political studies and psychology at the University of Otago in New Zealand, argues that people can "upgrade" their own intelligence throughout their lives. He believes intellectual stimulation（刺激）from others is important as the "brain seems to be rather like a muscle - the more you use it, the stronger it gets". However, the opposite is also true - so people sharing a home or workplace with those who are intellectually challenged risk seeing their IQ levels nosedive as a result.

    Professor Flynn analyzed US intelligence tests from the last 65 years and created new IQ "age tables". He found a bright ten-year-old with brothers and sisters of average intelligence will suffer a five to ten point IQ disadvantage compared to a similar child with equally bright brothers and sisters and special educational treatment to help pull them up.

    Professor Flynn also concluded that although genetics and early life experiences determine about 80% of intelligence, the remaining 20% is linked to lifestyle. This means that people can raise their IQ, or allow it to fall, by ten points or more. He suggested the best way to improve IQ levels is to mix with bright friends, find an intellectually challenging job and marry someone cleverer.

    I had a lot of teachers that I loved. However, the teacher that I remember most was Mrs Green from Marianna, Florida. She was my 5th grade teacher. Since I was a new student, not only in her class, but at the school, she made my time there much more pleasant. I immediately began to like her. She was really funny and I knew that she liked me. She made learning fun. I remember one day for Christmas holidays, she taught us how to make ornaments (装饰物) from eggs. My parents still have some of the ornaments I made.

    She made me leader for many group projects and that made me feel special. I think that would make any child feel special, especially when a child is in a new place with no friends. She made me want to be like that. Not to pick a "favourite" student, but to make every student feel that they are special. That year, I received the Presidential Academic Award (美国总统学术奖). I was really proud and so were my parents.

    Looking back at it, I think the reason why I did so well was that I felt important. Students do better when they feel like they are important or loved. Mrs Green always gets to know her students and forms personal relationships with them, which I will try to do some day. I just hope that there will be a student who finds me to their favourite teacher as I found her to be mine.