No one knows for sure when advertising first started. It is possible that it grew out of the discovery that some people did certain kinds of work better than others did them. That led to the concept of specialization, which means that people would specialize, or focus, on doing one specific job. Let's take a man we'll call Mr. Fielder, for example. He did everything connected with farming. He planted seeds, tended the fields, and harvested and sold his crops. At the same time, he did many other jobs on the farm. However, he didn't make the bricks for his house, grind the wheat for his flour, or cut his trees into boards. He also did not make the plows , the work boots, or any of the other hundreds of things a farm needs. Instead, he got them from people who specialized in doing each of those things. Suppose there was another man we shall call Mr. Plowright. Using what he knew about farming and working with iron, Mr. Plowright invented a plow that made farming easier. Mr. Plowright did not really like farming himself and wanted to specialize in making really good  plows. Perhaps, he thought, other farmers will trade what they grow for one of my plows. How did Mr. Plowright let people know what he was doing? Why, he advertised, of course. First he opened a shop and then he put up a sign outside the shop to attract customers. That sign may have been no more than a plow carved into a piece of wood and a simple arrow pointing to the shop door. It was probably all the information people needed to find Mr. Plowright and his really good plows. Many historians believe that the first outdoor signs were used about five thousand years ago. Even before most people could read, they understood such signs. Shopkeepers would carve into stone, clay, or wood symbols for the products they had for sale. A medium, in advertising talk, is the way you communicate your message. You might say that the first medium used in advertising was signs with symbols. The second medium was audio, or sound, although that term is not used exactly... What probably led to the start of advertisement? A) The discovery of iron. B) The specialization of labor. C) The appearance of new jobs. D) The development of farming techniques.
B

People have always wanted to speak with animals. There are many books about this, especially children books. Now there are also movies, such as Dr. Doolittle. When you watch animals, it seems clear that they can communicate with each other. Many people wonder why people can't also communicate with them.    Scientists know how some animals communicate. Bees, for example, use their bodies. They do a kind of dance to give information about food. Birds, on the other hand, share information with sounds. They use certain sounds to protect their homes and to stay together when they fly. Some male birds use lovely songs to attract a female . Other animals communicate with both body movements and sounds. For example, dogs wag their tails when they are happy, and they bark when they are excited.    People used to think it was possible to teach human language to animals. Parrots and other birds, for example, can learn to say words. But the birds just repeat the words. They don't understand them. Some American scientists tried to teach English to chimpanzees , close  s of human beings. However, this was impossible. Chimpanzees can't move their mouths the right way. They could never learn to speak like people.    Then scientists tried to teach human language to chimpanzees in other ways. Some tried with American Sign Language (ASL). Others tried with a simple computer. But chimpanzees could only learn to use a few words. They could never learn to use grammar. Their brains are very different from the brains of human beings.    Now some scientists are studying the same points between human and animal language. In fact, some animals use sounds like people do. Dogs, for example, use an unpleasant, low sound to tell other dogs to stay away. People, too, use that kind of voice to say the same things. A dog's noisy bark communicate that something is happening. People use the same high tone when they shout, "Watch out!"    Scientists want to understand the language of other animals, such as whales and bears. To do this, they go... Bees do a kind of dance to   _  . A) tell other bees where food is B) attract other bees C) show they are happy D) play with other bees
A

While there are many fascinating countries in the world to visit, I think there is something more adventurous, exotic  and romantic about visiting an island country. Take a look at some breathtakingly beautiful island countries in the world, which everyone should certainly visit at least once in his lifetime. Malta  Malta is a beautiful southern European country in the Mediterranean Sea, which has a rich history and culture. There are amazing sky-high cliffs to climb, splendid temples to explore and lots of wonderful places to go scuba-diving. In fact, there are plenty of interesting things to see and to do in Malta and this island country has something for everyone. The historic part of Malta is shown in its incredible architecture, great walled cities, and many underground tunnels. Fiji  Fiji is a fabulous island that has plenty of surprises for any adventurous travelers. It is famous for the world's best surf scenes, and many surfing enthusiasts travel to Fuji yearly to ride the great waves. Well, if surfing is not for you and you love sitting on the beach and relaxing, hiking or seeing breathtaking waterfalls, Fiji is certainly the best island country to visit. Maldives  Not only is Maldives one of the most beautiful island countries, but it is one of the most popular honeymoon destinations. Situated in the middle of the Indian Ocean, Maldives is made up of a series of ancient coral reefs that grow up along the sides of ancient volcanoes, with fascinating beaches and luxurious resorts. If a newly-married couple are looking for the best honeymoon destination, they will choose  _  . A) Malta B) Fiji C) the Mediterranean Sea D) Maldives

D