Part of the fun of watching sports events is following an exciting rivalry (竞争关系).

    But where do all these rivalries come from?

    Some rivalries start because athletes spend a lot of time close to opponents (对手).

    Other rivalries get personal. Things that one rival says that are thought to be not respectful to the other can cause a rivalry, even if the words are misunderstood. And sometimes, rivalries grow just because the athletes don't like each other's personalities.

    Some sports may also be more likely than others to cause rivalries. “Some sports only meet a few times, so there is less chance for rivalries to build,” For example, in sports where athletes perform on their own, such as diving, rivalries might also take longer to appear than in sports in which athletes compete at the same time. But in tennis, players often face each other, and rivalries are more likely to happen.

    So do the rivalries do good or harm to the athletes?

    Some believe that rivalries can be a good thing because they encourage athletes to try harder to win. But rivalries can also become too personal, taking athletes' attention away from their sports.

    Keegan agreed that rivalries often do athletes more harm than good. “They can be a huge distraction (分散注意力的事) and lead to focusing on the opponent more than the game,” he said.

    “Top athletes often have physical and mental training that they follow in order to worry less and prepare to compete”, Gould further explained. An important part of that preparation is preventing from distractions, including rivalries.

    “The better athletes don't care too much about a rivalry – they try to treat every competition the same,” Gould told LiveScience.

    Reading is really a good way to improve ourselves.{#blank#}1{#/blank#} If you don't believe me, please consider these reasons to read more books.

    ⒈You will optimize your brain power.

    {#blank#}2{#/blank#} Unlike watching television, which requires no thought process, reading is an active learning experience that will keep your mind sharp（even in old age）.

    ⒉{#blank#}3{#/blank#}

    If you're looking for entertainment on a budget, you can't beat books. Thanks to the popularity of electronic reading devices like the Kindle and re-selling websites like eBay, it's never been easier to entertain yourself for hours at a time, for the low cost of a few dollars.

    ⒊You will reduce stress and get into a good night's sleep.

    Exposing yourself to artificial light on your cellphone or TV reduces your body's production of melatonin （褪黑激素）, which can make it difficult to get a good night's sleep.{#blank#}4{#/blank#} Just replace that with a good book, which is a much better sleep-friendly alternative.

    ⒋You will change your life.

    I firmly believe that if it were not for books, I wouldn't have achieved so much in my life; nor would I have the knowledge, imagination or creativity that I depend on as a writer, business owner, and coach.

    Do you have the desire to read books now?{#blank#}5{#/blank#}

A. You will entertain yourself at any time.

B. You will entertain yourself at a low price.

C. The more books you read, the better your life will be.

D. This shouldn't come as a shock, but studies suggest reading makes you smart.

E. I hope these reasons encourage you to unlock your potential with the power of reading.

F. You should know that it is wise to keep a book in your purse or car at all times.

G. You would be wise to cut off all electronics at least an hour before bed.

    Rock music consists of many different styles. Even though there is a common spirit among all music groups, they make very different music.{#blank#}1{#/blank#}At that time the Beatles entered the world of music from Liverpool.

After they were given an invitation to appear live on BBC, the Beatles quickly became famous in Britain with nationwide tours. By mid-1963, the Beatles had been extremely popular in England. {#blank#}2{#/blank#}They held large concerts and performed at clubs. They became the hottest thing on the pop music scene in England. They began as a modestly successful musician group and ended the year as show business legends（传说）. John Lennon and Paul McCartney were named composers of the year.

    {#blank#}3{#/blank#}They were not sure how the Americans would react to the new type of music. Beatlemania hit New York on February 7, 1964. Hundreds of fans jammed the airport to greet them. {#blank#}4{#/blank#} The concert was broadcast live and attracted the largest one night audience in the history of television up to that time. The Beatles were described as a British invasion（入侵）by local and nationwide newspapers at that time. Their victory in America was still remembered as a major turning point in the history of rock and roll. Thanks to the Beatles, a lot of opportunities were opened up to new faces on the market. {#blank#}5{#/blank#}

A. They decided on a tour to the United States in 1964.

B. Even their hairstyles became major trends at that time.

C. Rock music developed in the 1950s and the early 1960s.

D. However, their songs changed the lives of generations to come.

E. Many rock bands were able to follow in the footsteps of the Beatles.

F. They appeared in the films A Hard Day's Night（1964）and Help！（1965）.

G. They performed their first concert in America at CBS television's 53rd street studio.

    No fight can end, and no friendship can move on, until everyone says these little words: I'm sorry. Sometimes, though, it can be difficult to say them. {#blank#}1{#/blank#}

    It is not about winning.

    {#blank#}2{#/blank#} When you start fighting with a friend, you may feel it is important that you “win” the fight by proving you're right and he is wrong, or by making him the first to apologize. In reality, you'll both lose if you let your fight ruin your friendship, and you'll both win if you find a way to heal it.

    {#blank#}3{#/blank#}

    You may have heard the expression "His pride stood in the way." It is usually used to describe a person who is so determined to be "right" that he lets an opportunity for happiness pass him by forever. {#blank#}4{#/blank#} Remember that as time goes by, we usually forget who was right and who was wrong in a disagreement, and only remember the sadness of losing a friend.

    Take the first step.

    Are you sick of fighting? Do you think this fight is just not important enough to ruin your friendship? {#blank#}5{#/blank#} You don't have to take full responsibility for starting the fight, or even say that your feelings were wrong. But you should find something you did or said that's worth apologizing for. If you say you're sorry, it's like an invitation for your friend to do the same. Once you've both said it, you'll both feel a million times better.

A. Stop thinking about your pride.

B. Then try to be the first to apologize.

C. Here are some things to keep in mind.

D. Don't let this happen to a friendship you care about.

E. It's about taking some responsibility for the argument.

F. There are some special moments when you shouldn't take the first step.

G. Friendships aren't like the Super Bowl, and there should never be the determination of a winner.

    A man going abroad to work leaves his young lady crying. "Don't worry, I will write to you every day," he said. For years he did write to her. But since he was happy with his job, he had no immediate plans of going home. One day, he received a wedding invitation. His girlfriend was scheduled to be married. To whom? To the mailman bringing regularly the letters of her boyfriend! Indeed, distance does make hearts struggle.

    While presents are important, love demands what is basic: presence of the beloved.

    Martha was busy with her job. She believed she had to work harder because she loved her father who had serious disease. She had to provide for his expensive medicine. Her brothers and sisters meanwhile stayed with their father most of the time. They bathed him, sang for him, spoon­fed him or simply kept him company.

    One day Martha was hurt. She overheard her father telling her mother, "All our children love me except Martha." "How can this be?" Martha thought. "Am I not the one killing myself in my work to earn money to buy for his medicine? My brothers and sisters do not even provide their share in the expenses as much as I do."

    One night, as Martha was as usual late in going home, she peeped for the first time in the room where her father was lying. She noticed that her father was still awake. She decided to come close at his bedside. Her father held her hands and said, "I miss you. I don't have much time. Stay with me." And she stayed with her father holding his hand the whole night.

    The next morning Martha said to everyone, "I have taken a leave of absence. I would like to be with my father. I will bathe him and sing for him from now on." Her father had a beautiful smile. He knew this time Martha loved him.

    As children, we need the assuring presence of our loved ones. Adult people need no less.

    In 2019, a big revolutionary technology shift will finally occur, which is called 5g. It is a once-in a-decade upgrade(升级)to our wireless systems that will start reaching mobile phone users in a matter of months. This new times will leap ahead of current wireless known as 4g by offering mobile internet speeds that will let people download an entire 120-minute movie within a second

    But this is not only about faster smart phones, but also will affect many other kinds of devices, including industrial robots, security cameras, drones(无人机), automatic cars, video games, sports, shopping and traffic data. With 5g technology, a clearer and truer 3D images will be formed and it can be off-loaded to other machines wirelessly, freeing users to move and making it easier to develop goggles(目镜)the size of eyeglasses. People can point a smart phone camera to a football game and see both live video on the display and player statistics or other data. Moreover 5g powerful effects extend to remote medical surgery and other fields that increasingly rely on high-speed connections.

    Officials in the United States and China regard 5g networks as a heated competitive edge. It can help spread the use of artificial intelligence and other cutting-edge technologies. Meanwhile, to get the benefits of 5g, users will have to buy new phones, while carriers will need to install new communication services, which will create a huge future market. In order to occupy it first, the famous world wireless service providers such as AT&T, Verizon, Samsung, Huawei have already declared that they will enter 5g business and showed their 5g new smart phones.

    However, in the United States, Verizon and AT&T will offer their 5g service with first use of high frequencies known as millimeter waves that can pump data at high speeds, but their signals don't travel as far. Instead Sprint and T-Mobile plan to start with lower frequencies, whose result may be somewhat slower initial speed, but wider range, although they all claim that they have mastered 5g technology. Thus they only first target the areas with large population. So 5g's full benefit to all are not expected until the main US key carriers upgrade their key switching equipment, which may happen in late 2019 or early 2020.