At only 12, Milton Hershey stopped {#blank#}1{#/blank#} (attend) school and began to work for a candy maker in Lancaster. There, he learned to mix sugar and water to make candy products,{#blank#}2{#/blank#} he moved to Philadelphia to set up a candy store. However, his store was a complete {#blank#}3{#/blank#} (fail). So he {#blank#}4{#/blank#} to Lancaster and began making caramels (焦糖) in his own way — with fresh milk and he made it.

Then in 1893 he bought the chocolate-making machines made by Germany. He was developing a(an){#blank#}5{#/blank#} (usual) plan — to build a large chocolate factory and a town to support it. So soon he bought a town {#blank#}6{#/blank#} he set up his chocolate factory in the following year. The factory provided free accommodation and all his workers lived in it. He found a way to make large amounts of milk chocolate. The Hershey Candy Company was on its way to success.

    Today, in the town of Hersey, the streetlights {#blank#}7{#/blank#} (shape) like the candy. The air often smells {#blank#}8{#/blank#} chocolate. At Hershey's Chocolate World, visitors can learn {#blank#}9{#/blank#} chocolate is made. This special town calls {#blank#}10{#/blank#}  “The Sweetest Place on Earth.”

    Paul Lucas can often be seen walking around the city of San Francisco. Sometimes people are {#blank#}1{#/blank#} (surprise) to see him walking without any shoes or socks,{#blank#}2{#/blank#} Lucas doesn't mind at all. He likes to walk barefoot, and {#blank#}3{#/blank#} do 640 other members of Dirty Sole Society, the club that Lucas {#blank#}4{#/blank#} (start) years ago. Lucas' idea for this is to encourage others to live {#blank#}5{#/blank#} (free)－free of shoes.

    According to Lucas, the barefoot life has many {#blank#}6{#/blank#} (advantage). The most important is simply that it feels good. He also says that walking barefoot allows you to experience the world directly by {#blank#}7{#/blank#} (touch) it with your feet. In addition, the feet do not smell so much {#blank#}8{#/blank#} they stay dry,{#blank#}9{#/blank#} (make) it hard for bacteria(细菌)  to grow. And, of course, walking barefoot keeps your feet in good shape, so it's actually {#blank#}10{#/blank#} (healthy) than wearing shoes.

    The computer began as a calculating machine in France in 1642. It could make difficult sums much {#blank#}1{#/blank#}  (simple). In 1936 Alan Turing wrote a book about how the computer could be made to work as a "universal machine"   {#blank#}2{#/blank#} (solve) any difficult mathematical problem.

    At{#blank#}3{#/blank#} beginning, the computer was {#blank#}4{#/blank#}large as a room. This really worried the designers. As time   {#blank#}5{#/blank#} (go) by, it became smaller and smaller. With artificial {#blank#}6{#/blank#} (intelligent), it is getting cleverer and cleverer, quicker and quicker.

    In the early 1960s, computers could{#blank#}7{#/blank#}connect) by a network,{#blank#}8{#/blank#} enabled their users to share information {#blank#}9{#/blank#} others. Since the 1970s, computers have had many new{#blank#}10{#/blank#}(application) and become very important in communication, finance, trade and even been put into space rockets and sent to explore the Moon and Mars.

    A black hole is a spot in space that has{#blank#}1{#/blank#}(power) gravity. Its gravity is so strong that it pulls everything nearby into it, stars, planets and other things. Black holes form when a star dies. When that happens, a huge amount of matter crowds into a very small space,{#blank#}2{#/blank#}becomes very dense. Black holes{#blank#}3{#/blank#}(talk) about in 1783 first. That year, one scientist said that in the universe, there might be places with strong gravity to trap light, although he didn't use the term "black hole".

Human history begins with stories. Some stories are so important that they{#blank#}1{#/blank#}(pass) down for countless generations. And storytelling is a useful tool, {#blank#}2{#/blank#}gives a lesson much more powerfully than other ways. For example, once I had to tell actors to be on time for a performance. Instead of{#blank#}3{#/blank#}(repeat) the time over and over again, I told them a true story. "The year before, one of the actors was late. We replaced him so he didn't get a chance to perform." Then, no one{#blank#}4{#/blank#}(be) late again.