“As easy as falling off a log” is often used to describe a job that does not take much effort. You might hear a student say to her friend that her spelling test was “as easy as falling off a log”. {#blank#}1{#/blank#}. It is easier to fall off the log than to stay on it.

    {#blank#}2{#/blank#}. One is “easy as pie”. Nothing is easier than eating a piece of sweet, juicy pie unless it is a “piece of cake”.

    “Piece of cake” is another expression that means something is extremely easy to do. A friend might tell you that his new job was a “piece of cake”.

    Another expression is “as easy as shooting fish in a barrel”. It is hard to imagine why anyone would want to shoot fish in a barrel. But, clearly, fish in a barrel would be much easier to shoot than fish in a stream. {#blank#}3{#/blank#}.

    Sometimes, things that come to us easily, also leave us just as easily. In fact, there is an expression —“easy come, easy go”—that recognizes this. {#blank#}4{#/blank#}. Easy come, easy go.

    When life itself is easy, when you have no cares or problems, you are on “Easy Street”. Everyone wants to live on that imaginary street.

    {#blank#}5{#/blank#}. It means to treat a person kindly or gently, especially in a situation where you might be expected to be angry with him. A wife might urge her husband to “go easy on” their son, because the boy did not mean to damage the car.

    For the rest of March,a disease will sweep across the US.It will keep kids home from school. {#blank#}1{#/blank#} Employees will suddenly lose their ability to concentrate.

    The disease, known as “March Madness”, refers to the yearly 65－team US men's college basketball tournament (锦标赛). {#blank#}2{#/blank#} Teams compete against each other in a single－elimination (单局淘汰) tournament that eventually crowns a national champion.

    Nearly 20 million Americans will find themselves prisoners of basketball festival madness. The fun comes partly from guessing the winners for every game. Friends compete against friends. {#blank#}3{#/blank#}  Colleagues against bosses.

    Big－name schools are usually favored to advance into the tournament.But each year there are dark horses from little－known universities.

    This adds to the madness.Watching a team from a school with 3,000 students beat a team from a school with 30,000,for many Americans,is an exciting experience.Two years ago,the little－known George Mason University was one of the final four teams. {#blank#}4{#/blank#}

    College basketball players are not paid, so the game is more about making a name for their university and themselves. {#blank#}5{#/blank#} About $4 billion will be spent gambling (赌) on the event.According to Media Life magazine,the event will bring in $ 500 million in advertising income this year,topping the post －season income of every US professional league,including that of the NBA.

A. Husbands against wives.

B.The players will go all out for the games.

C.But that doesn't mean money isn't involved.

D.College students will ignore piles of homework.

E.People are willing to spend more money on watching it.

F.It begins on March 15 and lasts through the beginning of April.

G.Many people had never even heard of the university before the tournament.

    India has many festivals, with some celebrations that last for weeks. However, none of them come even close to Holi, India's most colorful and fun festival. Celebrated on the day following the full moon, this year's festival happens to be on March 19th.

    As with most Indian festivals, this one also has many different folk stories. Most of them center around the success of good over evil. The most popular one is about a king, who hates his son Prahlada for loving the creator of the Universe－Lord Vishnu. When every attempt to stop him fails, his sister, Holika believed to be immune (免疫的) to fire, joins in the effort by inviting the young boy to sit with her inside a huge fire. Helped by the power of Lord Vishnu, Prahlada escapes safely, while the evil Holika is burned to death. To remember this event, huge outdoor fires are lit in the night before Holi in order to clean the air of evil spirits and to celebrate the death of the evil.

    So what's so great about this day? While there are some fun parades (游行) and folk songs and dance performances, the most fun of all is walking to the streets and splashing (泼洒) people with water guns and dry colors and even covering them with entire buckets of colored water. On this day, everybody is fair game, no matter how old or how young.

    At about midday, the splashing comes to an end and people living close to oceans or rivers usually take a bath in the water to clean themselves before going home to a delicious home­made big dinner and a well­deserved short sleep, following this full day of fun and activities.

    There's a new frontier in 3D printing that's beginning to come into focus: food. Recent development has made possible machines that print, cook, and serve foods on a mass scale. And the industry isn't stopping there.

    Food production

With a 3D printer, a cook can print complicated chocolate sculptures and beautiful pieces for decoration on a wedding cake. Not everybody can do that—it takes years of experience, but a printer makes it easy. A restaurant in Spain uses a Foodini to" re-create forms and pieces" of food that are" exactly the same,” freeing cooks to complete other tasks. In another restaurant, all of the dishes and desserts it serves are 3D-printed, rather than farm to table.

    Sustainability(可持续性)

    The global population is expected to grow to 9.6 billion by 2050, and some analysts estimate that food production will need to be raised by 50 percent to maintain current levels. Sustainability is becoming a necessity. 3D food printing could probably contribute to the solution. Some experts believe printers could use hydrocolloids( 水解胶体)from plentiful renewables like algae(藻类) and grass to replace the familiar ingredients(烹饪原 料). 3D printing can reduce fuel use and emissions. Grocery stores of the future might stock "food" that lasts years on end, freeing up shelf space and reducing transportation and storage requirements.

    Nutrition

    Future 3D food printers could make processed food healthier. Hod Lipson, a professor at Columbia University, said, "Food printing could allow consumers to print food with customized nutritional content, like vitamins. So instead of eating a piece of yesterday's bread from the supermarket, you'd eat something baked just for you on demand."

    Challenges

    Despite recent advancements in 3D food printing，the industry has many challenges to overcome. Currently, most ingredients must be changed to a paste( 糊状物)before a printer can use them, and the printing process is quite time-consuming, because ingredients interact with each other in very complex ways. On top of that, most of the 3D food printers now are restricted to dry ingredients, because meat and milk products may easily go bad. Some experts are doubtful about food printers, believing they are better suited for fast food restaurants than homes and high-end restaurants.

    Here are some top tips for world travelers.

    Travel light.{#blank#}1{#/blank#} It's no fun carrying a huge bag around a foreign city. Don't take too many clothes and avoid heavy books and electrical equipment.

    {#blank#}2{#/blank#} Always keep your passport on you in an inside pocket or special travel belt. There may be thieves about. It's a good idea to make a photocopy(复印件)of your passport and travel documents.

    Transport sense. Don't let go of your bags on the train.{#blank#}3{#/blank#} There are always thieves on public transport. If you want to sleep, tie your bag to your arm. When you take a taxi, it's a good idea to ask for the driver's permit. Many foreigners pay too much money because they take unofficial taxis.

    Keep clean. It's a good idea to wear dark clothes because they hide the dirt while white clothes attract it! Make sure you have plenty of clean underclothes and deodorant(除臭剂).{#blank#}4{#/blank#}

    {#blank#}5{#/blank#} You should always be polite and respectful towards the locals. Even if you find their habits and behaviour a bit strange, you shouldn't show your feelings. Remember, you're their guest.

A. Be polite.

B. Keep your documents safe.

C. You should carry a spare bag.

D. You don't want to smell bad!

E. Keep them with you at all times.

F. Make sure your bag isn't too heavy.

G. It's a good idea to wear similar clothes to the local people.

    Researchers at the University of York in England published their findings on facial recognition that, on average, people can remember as many as 5,000 faces.

    There have been many studies recently on facial recognition technology. But the authors of this study say theirs is the first time that scientists have been able to put a number to the abilities of humans to recognize faces. Rob Jenkins, leader of the research, said the researchers' study centered on "the number of faces people actually know." and were not able to discover whether there is a "limit on how many faces the brain can handle."

    Jenkins said the ability to tell individual people apart is "clearly important." In today's modern world of big cities, we meet and deal with thousands of people. The study suggests our facial recognition abilities help us to deal with the many different faces we see on the screens, as well as those we know. The results of the study give a baseline for comparing the "facial vocabulary" of humans with facial recognition software.

    Today, facial recognition technology is used in many ways, including by law enforcement agencies to prevent crime and violence. Governments use it to keep secret areas secure and, in extreme cases, control populations. Some governments use the software to watch people and find out where they go and what they do. Even Facebook uses facial recognition. For example, when you name a friend, Facebook technology may recognize the person's face from a different picture you had shared before.

    For the human study, people spent one hour writing down as many faces from their personal lives as possible. At first, they found it easy to come up with many faces. But by the end of the hour, they found it harder to think of new ones. Their change in speed let the researchers estimate when they would have run out of faces completely. 1,000 to 10,000 faces remembered. People who took part in the study were also shown thousands of photographs of famous people. Researchers asked them which ones they recognized. To make sure they knew these people, researchers required them to recognize two different photos of each famous person. The results showed that the participants knew between 1,000 and 10,000 faces.

    How do they explain such a wide range? Jenkins said one explanation may be that some people have a natural ability for remembering faces. "There are differences in how much attention people pay to faces and how well they process the information." Also it could be because of different social environments. Some people may have grown up in more populated places. So, they may have had more social contact throughout their lives.

    Researchers think age may be an interesting area for further research. “It would be interesting to see whether there is a peak age for the number of faces we know”, Jenkins said. He said it is possible that we gather more faces throughout our lifetime. But, he added, there also may be an age at which we start to find it harder to remember all of those faces.