Recent studies have shown that there is a link between anxiety and intelligence and it is a positive one.Fear allows you to react to a potential threat in good time.Being too happy all the time means that you don't think about potential problems.{#blank#}1{#/blank#}But the response means that their imagination is highly active.An active imagination keeps you safe from threats.

    The general belief about anxiety is that it's a negative thing.Because suffering from anxiety is not pleasant,most of the people who deal with it hope they don't have to.{#blank#}2{#/blank#}Science is showing that a little bit of anxiety is a good thing.

    In 2002,Israeli psychologists ran a test on 80 students.The students were under the impression mat they were there to appreciate artwork on a piece of software.However,the researchers rigged（在…上做手脚）the program.{#blank#}3{#/blank#}So they were men encouraged to contact IT.

    Finding IT brought new challenges.As the students left the room,they met various problems.{#blank#}4{#/blank#}someone also stopped them to ask them to complete a survey.The test found that the participants who really wanted to reach IT to fix the virus had the highest amount of anxiety.The students who had less anxiety couldn't focus.They stopped to complete the survey,pick up the papers,etc.

    Obviously,the anxious students had a greater sense of the threat.{#blank#}5{#/blank#}Therefore,anxiety can actually give us higher chance to succeed!

A.So when does worry become a bad thing?

B.Thus,they tried their best to achieve their goal.

C.But this does not necessarily need to be the case.

D.Some students came across dropped papers as they walked by.

E.Instead of viewing artwork,the students found a computer virus.

F.Often kids and adults with anxiety have a very negative view of themselves.

G.People with anxiety are sometimes responding to a threat that doesn't exist.

    Here are three best destinations for you to discover in 2018 if you ho heart-stopping adventure, a close-up look at history or the perfect meal.

    Los Cabos, Mexico

    Located at the tip of the Baja Peninsula, the two small colonial(殖民地的) towns of Cabo San Lucas and San Jose del Cabo have become the hottest vacation destinations in Mexico in recent years. With wide, original beaches, lively nightclubs, natural resorts, and a farm-to-table food scene, the oasis(乐园)of Los Cabos is drawing tourists in record numbers. As a result, the hotel scene is booming, with a lot of new developments and repairs completed this year.

Zambia

    Until now, Zambia has had little recognition as one of Africa's great safari(狩猎远征) destinations. Yet experts know it as the birthplace of the walking safari. In South Luangwa National Park, visitors can expect to see more animals than baobab trees, while Liuwa Plain National Park is the setting for the world's second-largest wildebeest(角马) migration, when tens of thousands of the creatures head across the plain from neighboring Angola.

Brussels, Belgium

    Visitors may want to return to the Belgian capital in 2018 to visit two cutting-edge museums. The Millennium Iconoclast Museum of Art opened to show contemporary art from around the world. There's also the Citroen Cultural Centre, which will launch its first exhibition in May. The JAM Hotel with exposed brickwork and concrete beams housed in a former art school, is the perfect place for culture-lovers to stay. don't leave town without experiencing beer culture at youthful breweries(啤酒厂) like Brasserie de la Senne or Brussels Beer Project.

Great women

    When it comes to changing the world, these women have invented, researched and collected their way to a place in scientific history.

    Hedy Lamarr

    More widely known as a Hollywood star during the 1930s and 1940s, Hedy Lamarr（1914－2000）was much more than a pretty face. After her home country Austria was taken over by the Nazi, highly intelligent and fearless, Lamarr worked with scientist and inventor George Antheil to develop a secret communication system. Without her work, wireless（无线的）technology as we know it today would not exist. Today she is considered as the mother of WiFi.

    Ameenah Gurib-Fakim

    Ameenah Gurib-Fakim was born in 1959 in Mauritius, the country for which she now serves as the first woman president. She is a scientist who has spent many hours researching the local plants of Mauritius and their values as medicine. She has held many high positions in the fields of both politics and science and was awarded（授予）the 2007 UNESCO Award for Women in Science.

    Mae C. Jemison

    On June 4,1987, Mae C. Jemison became the first African-American woman to enter the space program. On September 12,1992, she joined several other astronauts on the Endeavour, becoming the first African-American woman in space. Born in Decatur, Alabama in 1956 and raised mostly in Chicago, Jemison holds many awards and degrees, As a child, Jemison spent a lot of time in her school library ,reading especially books space.

    It was Monday. Mrs. Smith's dog was hungry, but there was not any meat in the house.

    Considering that there was no better way. Mrs. Smith took a piece of paper, and wrote the following words on it: “Give my dog half a pound of meat.”Then she gave the paper to her dog and said gently:“Take this to the butcher(*person whose job is selling meat) and he's going to give you your lunch today.”

    Holding the piece of paper in its mouth, the dog ran to the butcher's. It gave the paper to the butcher. The butcher read it carefully, recognized that it was really the lady's handwriting and soon did it as he was asked to. The dog was very happy, and ate the meat up at once.

    At noon, the dog came to the shop again. It gave the butcher a piece of paper again. After reading it, he gave it half a pound of meat once more.

    The next day, the dog came again exactly at noon. And as usual, it brought a piece of paper in the mouth. This time, the butcher did not take a look at paper, and gave the dog its meat, for he had regarded the dog as one of his customers (*people who buy sth. from a shop).

    But, the dog came again at four o'clock. And the same thing happened once again. To the butcher's more surprise, it came for the third time at six o'clock, and brought with it a third piece of paper. The butcher felt a bit puzzled. He said to himself,“This is a small dog. Why does Mrs. Smith give it so much meat to eat today?”

    Looking at the piece of paper, he found that there were not any words on it!

    The 65-year-old Steve Goodwin was found suffering from early Alzheimer's (阿尔楚海默症). He was losing his memory.

    A software engineer by profession, Steve was a keen lover of the piano, and the only musician in his family. Music was his true passion, though he had never performed outside the family.

    Melissa, his daughter, felt it more than worthwhile to save his music, to which she fell asleep catch night when she was young. She thought about hiring a professional pianist to work with her father.

    Naomi, Melissa's best friend and a talented pianist, got to know about this and showed willingness to help.

    "Why do this?" Steve wondered.

    "Because she cares." Melissa said.

    Steve nodded, tears in eye.

    Naomi drove to the Goodwin home. She told Steve she'd love to hear him play. Steve moved to the piano and sat at the bench, hands trembling as he gently placed his fingers on the keys.

    Naomi put a small recorder near the piano, Starts and stops and mistakes. Long pauses, heart sinking. But Steve pressed on, playing for the first time in his life for a stranger.

    "It was beautiful." Naomi said after listening to the recording. "The music was worth saving."

    Her responsibility, her privilege, would be to rescue it. The music was sill in Steve Goodwin. It was bidden in rooms with doors about to be locked.

    Naomi and Steve met every other week and spent hours together. He'd move his fingers clumsily on the piano, and then she'd take his place. He struggled to explain what he heard in his head. He stood by the piano, eyes closed, listening for the first time to his own work being played by someone else.

    Steve and Naomi spoke in musical code lines, beats, intervals, moving from the root to end a song in a new key. Steve heard it. All of it. He just couldn't play it.

    Working with Naomi did wonders for Steve. It had excited within him the belief he could write one last song. One day, Naomi received an email. Attached was a recording, a recording of loss and love, of the fight. Steve called it "Melancholy Flower".

    Naomi heard multiple stops and starts, Steve struggling, searching while his wife Joni called him "honey" and encouraged him. The task was so hard, and Steve, angry and upset, said he was quitting. Joni praised him, telling her husband this could be his signature piece.

    Naomi managed to figure out 16 of Steve's favorite, and most personal songs. With Naomi's help, the Goodwin family found a sound engineer to record Naomi playing Steve's songs. Joni thought that would be the end. But it wasn't.

    In the months leading up to the 2016 Oregon Repertory Singers Christmas concert, Naomi told the director she had a special one in mind: "Melancholy Flower"

    She told the director about her project with Steve. The director agreed to add it to the playing list. But Naomi would have to ask Steve's permission. He considered it an honor.

    After the concert, Naomi told the family that Steve's music was beautiful and professional. It needed to be shared in public.

    The family rented a former church in downtown Portland and scheduled a concert. By the day of the show, more than 300 people had said they would attend.

    By then, Steve was having a hard time remembering the names of some of his friends. He knew the path his life was now taking. He told his family he was at peace.

    Steve arrived and sat in the front row, surrounded by his family. The house lights faded. Naomi took the stage. Her fingers. His heart.

    Each year there are at least five million people around the world who develop serious flu (流感), and almost half a million deaths. When someone we know gets the flu virus, we expect them to be very careful not to pass it on to others. Doctors and nurses working with flu patients also need to protect themselves from the virus. But what is the best way to do this? This is the question that flu expert Professor Jonathan

    Van-Tam at Nottingham University is trying to answer. He wants to find out how flu is transmitted, so that he can stop doctors and nurses getting sick.

    Van-Tam explains their method, "There are 41 volunteers in my experiment. Some healthy volunteers are made to get flu first. When they show symptoms (症状), other volunteers, usually called recipients(接受者), enter the house. Everyone lives together in the small space for four days. Some of the recipients wear face masks, and wash their hands every 15 minutes, but some have no protection. In this way we can study who catches the flu and which ways of transmitting flu are important. During the four days when they are in contact with the virus, and for the ten days after that, the flu recipients are checked regularly."

    The experiment is not simple and it is very expensive. It is difficult to design correctly, and it is also difficult to plan and carry out. Just one study like this takes about 18 months to organize and needs hundreds of people working on it. But Van-Tam believes it is worth because the results will help to decide what type of protection is needed for people working in hospitals with large numbers of flu patients around the world. And perhaps it could reduce the number of deaths from flu each year.