Ask three people to look out of the same window at a busy street corner and tell you what they see. {#blank#}1{#/blank#}(chance) are that you will receive three different answers. Each person sees the same scene, but each perceives something different about {#blank#}2{#/blank#}.

    Perceiving goes on in our minds. Of {#blank#}3{#/blank#} three people who look out of the window, one may say that he sees a policeman {#blank#}4{#/blank#}(give) a motorist a ticket. Another may say that he sees rush-hour traffic jam at the intersection. The {#blank#}5{#/blank#}(three) may tell you that he sees a woman trying to cross the street with four children. Perception is the mind's {#blank#}6{#/blank#}(interpret) of what the senses — in this case our eyes — tell us.

    Many psychologists today are working to try {#blank#}7{#/blank#}(determine) just how a person experiences or perceives the world around. Using a scientific approach, these psychologists set up experiments in  {#blank#}8{#/blank#} they can control all of the factors.  {#blank#}9{#/blank#} measuring and charting the results of many experiments, they are trying to find out what makes different people perceive  {#blank#}10{#/blank#}(total) different things about the same scene.

    Our ancestors（祖先）made the old saying that friends{#blank#}1{#/blank#}(be) like wine-the older,the better.Because of that, many people think old friends to be{#blank#}2{#/blank#}(important) than new ones.For example,if two pieces of advice are given to solve a problem,one from a new friend and the other from an old friend,people always prefer to choose the latter one,{#blank#}3{#/blank#}the new friend's advice may be better.

    {#blank#}4{#/blank#}(disagree) with the old saying,I believe that new friends are not{#blank#}5{#/blank#}(necessary) worse than old friends. Why?Because the{#blank#}6{#/blank#}(long) of time cannot tell whether your friendship is better or not.

    Once you call someone friend,he must be a person who is{#blank#}7{#/blank#}(rely) and whose interests are in common with{#blank#}8{#/blank#}(you).Maybe a friend's outside look{#blank#}9{#/blank#}(change) all the time,but the inside characters of him and his interests won't change at all.It is just these unchangeable characters and interests that make him a friend to you.{#blank#}10{#/blank#},there is no difference between old friends and new ones on this point.

    Parkour（跑酷）is a sport which trains people to deal with any physical obstacles in their path. It is not a competition but a physical training. A person joining in parkour is called traceur. Traceurs run along a path and use only their bodies to deal with the obstacles in the most efficient way. Parkour pays more attention to efficiency{#blank#}1{#/blank#}(make) it different from the similar practice of free running. Parkour{#blank#}2{#/blank#}(common) includes running, jumping, climbing, rolling and other similar types of physical movements. Many teenagers think that parkour is quite {#blank#}3{#/blank#} cool sport. They have great interest in it.

    The {#blank#}4{#/blank#}(invent) of parkour can't {#blank#}5{#/blank#}(give) to one person because many people have worked on it. A French officer developed the earlier form of parkour. The term “parkour” was first introduced by David Belle and Sebastiar Foucan in the early 1980s{#blank#}6{#/blank#} that time, they were two teenagers. This sport {#blank#}7{#/blank#}(become) more popular in the1990s when many films were made on it.

    {#blank#}8{#/blank#} makes parkour different from other sports is its power to bring people together. It allows traceurs to forget the {#blank#}9{#/blank#}(society) and other problems, and makes a large group work and grow together instead of competing with each other. People can benefit from parkour as it can make them stronger. Still, it also influences one's thought process by improving self-confidence and critical-thinking skills. In this way, parkour allows one to deal with {#blank#}10{#/blank#}(difficulty) in daily life if he or she deals with them through parkour.

    China, which takes pride in inventions in ancient times, has once again shown its ability {#blank#}1{#/blank#}(change)the world with its “new four great inventions”: high-speed railways, electronic payments, shared bicycles and online shopping. The “new four great inventions” are all related to China's high-tech innovation(创新), {#blank#}2{#/blank#}improved the quality of people's lives. “My wallet is no longer in use. I can buy and eat {#blank#}3{#/blank#}I want simply with a tap of my phone,” said Lin Jinlong, {#blank#}4{#/blank#}overseas Chinese student from Cambodia,{#blank#}5{#/blank#}(add) that “even pancake sellers are using Alipay (mobile payment). We can also order food at home, and it is of great {#blank#}6{#/blank#}(convenient). If I were at home in Cambodia, I would have to go outdoors.” The bikes themselves are not new, but the operating model of bike-sharing is based {#blank#}7{#/blank#}satellite navigation system, mobile payment, big data and other high technologies. It is{#blank#}8{#/blank#}(increase) clear that China is innovating and no longer copying Western ideas. This is partly because China skipped over the PC age and went directly to mobile. China has the{#blank#}9{#/blank#}(large) mobile use in the world.

    In terms of the “new four great inventions”, Charlie Dai, principal analyst of American market research company Forrester, said, “These products and service{#blank#}10{#/blank#}(improve) customer experience so far, improving national and global economy at the same time”.