【正文】 criticism is that farmraised fish can spread diseases to wild fish.Some people say that the farming methods being used now won39。t allowed to vote. In protest, many women went on fasts. They hoped that fasting would bring attention to this injustice. Mohandas Gandhi, the famous Indian leader, fasted 17 times during his life. For Gandhi, fasting was a powerful political tool. In 1943, he fasted to bring attention to his country39。t stop people from fasting for political, religious, or health reasons.(305 words)16 The Marie CelesteThere are many stories about the ocean. One of the strangest is a true story about a sailing ship. It is a mystery even today.In 1872, the Marie Celeste started on a trip across the Atlantic Ocean with a crew of ten people. Some time later, the captain of another ship, the Dei Gratia, saw the Marie Celeste. There was something strange about its appearance. The captain called out, but there was no answer. The Marie Celeste seemed deserted.When the captain went to inspect the ship, no one came to meet him. He knew something was wrong, but there were no signs of violence. Nothing was missing, and there was no damage to the ship39。s diary was ten days earlier. However, the food on the table was only a few days old. Someone was on the ship a few days before, but they didn39。s diary. Why?There were many different explanations for the mystery of the Marie Celeste. Some people thought that a huge octopus ate the crew. Others said bad weather carried them away. A few people believed that the Marie Celeste was under a curse, because it sank on a later voyage. Now that the Marie Celeste lies somewhere at the bottom of the ocean, no one can ever solve the mystery.(274 words)17 The Roanoke SettlementOnly a few Europeans lived in North America in the 16th century. Most of them settled on the northeast coast. In 1587, a small group of about 100 people decided to 11/20go south. They moved to the small island of Roanoke. That area later became part of the state of North Carolina.Unfortunately, the Roanoke settlers weren39。t have enough food for the winter, and there wasn39。t explain the absence of bodies.Many years later, more settlers came to North Carolina. One of them met a Native American group called the Lumbee. They were unusual looking pared to the blackhaired, browneyed Native Americans in the north. Some Lumbee had blonde hair and gray eyes. Then he listened to their speech and almost fell off his horse. They seemed to speak an odd kind of English!He asked where they were from. None of them knew, but they said that their grandparents talked from a book. Did they mean that their grandparents were able to read? As he rode back home, he asked himself a question: Were the Lumbee people the descendants of the Roanoke settlers?People are still asking the identical question. Because there are no written records, we can39。t move, so the ship slowly moved closer. Finally, the sailors realized that the giants were statues. Who made these huge statues? How did they get there?Easter Island is a very small island in the Pacific Ocean. It is more than 2,000 miles from the nearest continent (South America). It is one of the most isolated places on earth.The biggest statue on Easter Island is over 60 feet high and weighs over 100 tons.There are hundreds of smaller ones, about 15 feet high. All of the statues are made of stone, and some wear stone hats. Their faces are solemn and unsmiling.Earlier inhabitants of Easter Island made the statues from the rocks in a volcanic crater. Next, they had to move the statues a long distance. In some cases, they moved the statues to locations more than ten miles away.No one knows for certain how the inhabitants were able to move the statues. Some scientists say that palm trees grew on Easter Island in the past. They think the inhabitants cut the trees down and placed the heavy statues on the trees. Then groups of 70 or more people rolled the statues to their present locations. Other scientists disagree with this theory because there are no palm trees on the island today. More important, the purpose of the statues is still a mystery. Was the purpose of the statues to prevent strangers from landing on the island?The result, however, has been the opposite. Large groups of eager people e to look at the statues. Easter Island now has a modern airport, and people e from all over the world to visit.(309 words)19 The Tunguska FireballThe Tunguska plateau is an isolated area in central Siberia. On the morning of June 30, 1908, inhabitants of the area saw and heard a mysterious explosion. Fire covered the sky, and the earth shook violently. In the following nights, there were strange lights in the sky. The night sky was so bright that people could read the newspaper outdoors. Far away in Europe, many people reported seeing unusual lights in the night sky.The Tunguska plateau is very difficult to reach, so no one went to inspect the site of the explosion. Most people thought the explosion was probably an earthquake, and they soon forgot about it.Nineteen years passed before Leonid Kulik, a Russian scientist, went to look for the site of the explosion. With great difficulty, he traveled on foot to the Tunguska plateau. What he saw there amazed him. As far as he could see, the trees were black. Many lay flat on the ground. The explosion burned perhaps 80 million trees over an area of about 1,000 square miles. After seeing the destruction, Kulik decided that a meteor probably caused the explosion.For many years, the meteor theory was the most popular explanation for the Tunguska explosion. However, there were problems with this theory. No one could find the crater where the meteor hit the ground, and no one could find any pieces of a meteor. In addition, some of the trees at the center of the explosion weren39。t explain the missing pieces of a meteor. A more recent theory suggests something pletely different. Perhaps it wasn