Although most people believe that formal schooling is required for scientific success, a college degree is not always necessary. {#blank#}1{#/blank#}excellent example of a man who won fame as a scientist {#blank#}2{#/blank#}academic(学术的) training is Vincent J. Schaefer. His formal education ended {#blank#}3{#/blank#} two years of high school when he had to go to work in an untrained job at General Electric. Because {#blank#}4{#/blank#} his inventive mind and his skill as a model maker, he was soon allowed to try his own experiments in the company laboratory. His natural {#blank#}5{#/blank#}(curious) made him wonder about clouds. He developed, after many tries, a method of making clouds rain {#blank#}6{#/blank#}they would not normally do so. This method, {#blank#}7{#/blank#}(call) seeding, has been very {#blank#}8{#/blank#}(help) to farmers, and {#blank#}9{#/blank#}made him win much fame.

    Schaefer believes that for people{#blank#}10{#/blank#}, most of all, are interested in the world and everything in it, a college degree is unnecessary.

    When you take a walk in any of the cities in the West, you often see a lot of people{#blank#}1{#/blank#} (walk) with dogs. It is still true that the dog is the most useful and faithful animal in the world. But the reasons why people keep a dog{#blank#}2{#/blank#}(change). In the old days, people used to train dogs to protect themselves against the attacks from{#blank#}3{#/blank#}beasts. And later they came{#blank#}4{#/blank#}( realize) that the dog was not only useful{#blank#}5{#/blank#}willing to obey its master. For example, when people used dogs for hunting, the dogs would not eat what they caught without{#blank#}6{#/blank#}(permit). But now people in the city need not protect themselves against attacks of animals. Why do they keep dogs, then? Some people keep dogs to protect themselves from robbery, but the {#blank#}7{#/blank#}(important) reason is for companionship. For a child,{#blank#}8{#/blank#}dog is his best friend when he has no friends to play with; for a young couple, a dog is {#blank#}9{#/blank#}child when they have no children; for old couples, a dog is also their child when their real children have grown up. So the main reason why people keep dogs has changed{#blank#}10{#/blank#}protection to friendship.

    Young people {#blank#}1{#/blank#} (bear) in 1995 or later have another name in English — Generation Z.

    Now entering adulthood and soon to join the workforce, Generation Z grew up in a special period of time when technology developed fast and the Internet became {#blank#}2{#/blank#} (universe).

    It {#blank#}3{#/blank#} (believe) that Generation Z is the generation that is going to shape our future, {#blank#}4{#/blank#} is why policy makers are trying {#blank#}5{#/blank#} (they) best to understand these young people. Most people agree that the biggest difference between Generation Z and other generations is how connected they are. This is a group of people who have been familiar {#blank#}6{#/blank#} social media as soon as they came to the world. It may be true that Generation Z-ers have a shorter attention span（持续时间）{#blank#}7{#/blank#} a goldfish does, but since they grew up among social changes, they are more active in {#blank#}8{#/blank#} (political).

    Generation Z-ers are also culture creators. {#blank#}9{#/blank#} (grow) up with the Internet has freed this generation from traditional cultural expression. These young people never {#blank#}10{#/blank#} (willing) let their creativity be limited by their parents or traditional rules.

    London is the capital city of the {#blank#}1{#/blank#} (unite) Kingdom which is off the northwest coast of the continental Europe. London is the seat of the Government of the United Kingdom. Many government departments are based close to the Palace of Westminster.

    The history of London {#blank#}2{#/blank#} (go) back to its founding by the Romans, {#blank#}3{#/blank#} named it Londinium. London has a wide range of peoples and cultures, and more than 300 languages are spoken within Greater London. London is {#blank#}4{#/blank#} leading global city with strengths in arts, education, entertainment, fashion, tourism and transport. It is one of the world's most-visitedcities and has the world's largest city airport system. London has many universities, making {#blank#}5{#/blank#} the largest centre of higher education in Europe. In 2012, London became the first city {#blank#}6{#/blank#}(host) the modern Summer Olympic Games three times. London is a world {#blank#}7{#/blank#} (culture) capital and is home {#blank#}8{#/blank#} many museums, galleries, libraries, and sporting events, including the British Museum which always symbolizes London. The London Underground is the {#blank#}9{#/blank#}(old) underground railway network in the world.

    London is{#blank#}10{#/blank#} a wonderful city that travelling there will be an exciting experience.