As a child, Olympic figure skaters' shining costumes, smooth movements and thrilling jumps attracted me. Olympic-level skaters make their sport look easy, but in fact, skating     1     (event) are full of challenges.

Figure skating was the first winter sport to be added to the Olympics. And then men’s speed skating     2    (put) on the list several years later. In the Olympics,     3     wide variety of skating competitions challenge both male and female competitor strength and agility (敏捷度).

The term “figure skating” comes from figures skaters make on the ice. Until 1991 certain figures were required     4    (test) competitors’ certain skills. Now that this requirement has been removed, skaters     5    (usual) focus on jumps. They take off in different positions and spin (旋转) several times in the air before landing on one foot.

    6    (be) a form of figure skating, ice dancing was inspired by ballroom dance.     7    (like) figure skating, ice dancing only allows jumps of one complete turn. A man can lift his partner, but no     8    (high) than his head. Instead, dancers focus on moves     9     keep them moving in unison (一致地) on the ice.

While figure skating requires strength and agility, speed skating requires different skills. The goal is simple: Cover the distance as quickly     10     possible. Naturally this requires leg strength.

At high levels of competition, skating requires athletic ability and hours of practice, but ordinary people can also get out on some ice and enjoy the sport of skating.

5 . Business etiquette in Singapore

Be polite, professional and patient at all times. This lead to good relationships which you will need in order to do business in Singapore.

    1     And there are rules of etiquette（礼节）that you must follow. Status vey important, and the eldest person in the group is always respected.

You will need to plan ahead.     2     Nowadays appointments can be made by phone or email, although writing to the person concerned is the most formal way to organize a meeting. Many businesses close during Chinese New Year.     3    .

Make sure you arrive on time for business meetings. This is a matter of respect. If you are going as a group, make sure you are lied up cording to your status. Likewise, wait to be seated.

    4     Only use personal names or nicknames（昵称）when you are invited to do so, or when you have known someone for along time.

Business cards are exchanged the beginning of meetings and are always handed out so that the writing faces the receiver. Etiquette demands that you hold the card with both hands and examine it carefully; before putting the card into our card case, smile in order to show that you have noted who the other person is.     5     Make sure your own business cards are in perfect condition before you hand them out.

6 . George Mason University looks like any other big college with its tall buildings, student housing and green lawns (草坪)—except for the robots.

This Northern Virginia university recently set up several dozen meal delivery (递送) robots from Starship Technologies to make it easier for students to get food.

Many colleges across the country have set up delivery robots—including University of the Pacific in Stockton, California, and Northern Arizona University—but George Mason University is the first college in the United States to include robots in its student dining plan. The school is partnering with food service provider Sodexo for the program.

"We were amazed by the volume of orders (订单量) that we had when we turned the service on," Starship Technologies manager Ryan Tuohy says. "But what's really touching is how the students in the university have accepted the robots."

Student Grace Pereira-Plaza says she finds the robots "pretty cute" and at first students were crazy about them - taking pictures, dressing them up for holidays. But they slowly got used to them. “We find it normal now. When we see them go by, it’s like ‘Oh there they are,”" Pereira- Plaza says.

How does it work? Students can place an order through an app for food from any restaurant that is part of the program. The cost is $1.99 per delivery. Then, they wait. The goal: a 30- minute delivery. Students can watch robot as it travels toward them- at 4 miles an hour.

The robot is equipped with nine cameras and sensors to navigate (导航) its surrounds. Humans are still needed to put the food into the robots and they can monitor (监控) them from far away and step in if there are any problems. But these are self-learning machines that can adapt. So, if they see a student start across the road they’ll know what to do, "Mark Kroner, head of the school's food operations, says. " So they are learning and its fun to watch them progress. "

7 . Blek le Rat is a French street artist who calls himself "The Man Who Walks Through Walls". He is a pioneer of street art. He began his work as a city decorator in Paris in the early 1980s, when he was twenty. Blek began his artwork in 1981, painting (用模板制成的图案) of rats (老鼠) on the walls of Paris streets.

His real name is Xavier Prou, and he does not draw violent images, only reflective ones, and he says, "My images are a present I make for everyone to enjoy, even children. " He has had a great influence on today's graffiti (涂鸦) art, the main drive of his work being social awareness and his wish to bring art to people. His dream is to be allowed to provide art to the city streets without having any problems. Once he was caught by the police, and afterwards he turned to putting posters instead. They are after all better for the walls, aren't they?

His designs, based on life-size stencils of human beings and animals, don't just decorate cities but awaken people's emotions. Their social observation makes them touching, humorous and political. In 2006 he began his series of images representing the homeless, in attempts to bring attention to what he views as a global problem.

He says that when you go on the street with a spray can (喷漆罐)，and pry your name，you will go back and see it, because when you leave something in the street, you leave part of yourself. Street artists cannot help coming back to admire their own work; it is the main reason for doing it.

The Internet has made street at a global movement, but it is the art of the common people and not of highly paid and respectable artists. There is nothing bigger culturally in the world at the moment than street art. It is taking over the planet Mot cites are covered with it, so much so that it is noticeable when there isn’t any. It is even bring sold, like "real" woks of art.

Chen Yifan, 17, a high school student, hit a     1     (value)SUV on his way to deliver some food, leaving a 20 centimeter scratch(划痕)and a broken mirror.

    2     nobody else was at the scene, Chen left all his money, 31l yuan($45), for compensation(赔偿),and a letter of apology. When the owner Mr. Xue saw the money and letter, he     3     (touch)by the student's deed and decided to return the money.

The owner finally got in touch     4     Chen. "I saw the owner's telephone number on the car window, but I dared not call him. I was afraid of     5     (blame)and decided to leave a short letter, "Chen said. The teenager,     6     does part-time delivery jobs during vacations and earns 60-70 yuan every day, is a high-school student from a low-income family.

“Some people would leave without     7     (word) after hitting a car, but the boy left money and     8     apology letter. His behavior    9     (deep)moved me."

Xue has offered 10, 000 yuan to help Chen's future studies. "He is a kind boy and should be rewarded for his     10     (honest),"Xue said.

Goats are known for being sweet and lovable creatures and they can make humans smile     1    (simple) by being cute. Now, a research team     2    (make) up of scientists from the UK, Brazil, and Germany has concluded that goats can actually tell when humans are smiling and that goats greatly prefer happy faces     3    angry ones.

The researchers wanted to see whether goad could read human expressions, even though they aren't bred to be companion animals. In going about this, the experts showed the goats two     4    (picture) of an unfamiliar human, one with a happy face and the other     5    (look) angry.

    6    (complete) this study, the researchers used 35 goats     7    had already spent time around humans. When the photos were placed in the goats' enclosure, it quickly became clear that the animals liked to be near and spend     8    (much) time staying with the happy photo than the angry one.

After many trials, the researchers found that regardless of the person's age or gender, goals preferred humans with happy faces.

It turns out that animals that don't have a long history of domestication can still figure out when a human is happy     9    sad. It should     10    (note) that the goats used in this study were cared for by some people, so they were used to being around humans. And the next set of trials has already been scheduled to take place with goats that have not had much interaction with humans at all.