湘潭大学
Directions: For this part you are required to summarize the main idea of the following passage in no more than 80 words. Write your summary on the ANSWER SHEET. (10 points)Buying things today is so simple. Just enter a shop, say a book store, choose the desired book and pay for it. Long ago, before the invention of money, how did people trade? The most primitive way of exchange should be the barter trade. In this form of transaction, people used goods to exchange for the things that they had in mind. For instance, if person A wanted a book and he had a spare goat, he had to look for someone who had the exact opposite, that is, that someone, say person B, had a spare book of person A’s choice and was also in need of a goat. Having found such a person, the problem did not end there. A big goat might be worth not only one book, hence person B might have to offer person A something else, say five chickens. However, he would run the risk of person A rejecting the offer as he might not need the chickens. The above example clearly illustrates the inefficiency of barter trading.Many years later, the barter trade finally gave way to the monetary form of exchange when the idea of money was invented. In the early days, almost anything could qualify as money: beads, shells and even fishing hooks. Then in a region near Turkey, gold coins were used as money. In the beginning, each coin had a different denomination. It was only later, in about 700 BC, that Gyges, the king of Lydia, standardized the value of each coin and even printed his name on the coins. Monetary means of transaction at first beat the traditional barter trade. However, as time went by, the thought of carrying a heavy pouch of coins for shopping appeared not only troublesome but thieves attracting. Hence, the Greek and Roman traders who bought goods from people in faraway cities invented checks to solve the problem. Not only were paper checks easy to carry around, they discouraged robbery as these checks could only be used by the person whose name was printed on the notes. Following this idea, banks later issued notes in exchange for gold deposited with them. These bank notes could then be used as cash. Finally, governments of today adopted the idea and began to print paper money, backed by gold for the country’s use. Today, besides enjoying the convenience of using paper notes as the mode of exchange, technology has led man to invent other means of transaction too like the credit and cash cards.
When Harvard student Mark Zuckerberg launched the facebook.com in Feb. 2004, even he could not imagine the forces it would let loose. His intent was to connect college students. Facebook, which is what this website rapidly evolved into, ended up connecting the world. To the children of this connected era, the world is one giant social network. They are not bound — as were previous generations of humans — by what they were taught. They are only limited by their curiosity and ambition. During my childhood, all knowledge was local. You learned everything you knew from your parents, teachers, preachers, and friends. With the high-quality and timely information at their fingertips, today’s children are rising normally tame middle class is speaking up against social ills. Silicon Valley executives are being shamed into adding women to their boards. Political leaders are marshalling the energy of millions for elections and political causes. All of this is being done with social media technologies that Facebook and its competitors set free. As does every advancing technology, social media has created many new problems. It is commonly addictive and creates risks for younger users. Social media is used by extremists in the Middle East and elsewhere to seek and brainwash recruits. And it exposes us and our friends to disagreeable spying. We may leave our lights on in the house when we are on vacation, but through social media we tell criminals exactly where we are, when we plan to return home, and how to blackmail (敲诈) us. Regardless of what social media people use, one thing is certain: we are in a period of accelerating change. The next decade will be even more amazing and unpredictable than the last. Just as no one could predict what would happen with social media in the last decade, no one can accurately predict where this technology will take us. I am optimistic, however, that a connected humanity will find a way to uplift itself. 1. What was the purpose of Facebook when it was first created? 2. What difference does social media make to learning?3. What is the author’s greatest concern with social media technology?4. What does the author think of social media as a whole?
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