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Swimming in the water of Hawaii’s Big Island is a fun experience. But it can be more exciting if there are dolphins swimming around and jumping out of the sea too. For many people, it would be a wonderful dream to swim with these lovely animals! However, this may not be good for dolphins. They may get hurt because of human interaction (互动).

Dolphins are active and usually look for food at night. In the day, they like to rest in shallow bays(海湾). Many people think the dolphins are awake during the day as they swim. But when they sleep they rest half of their brain and keep the other half awake to breathe, so they may be sleeping even when they’re swimming in the water.

From 2010 to 2013, spinner dolphins (飞旋海豚) of Hawaii’s Big Island were exposed to human activities more than 82 percent of the time, according to Julian Tyne, a researcher at Australia’s Murdoch University.

The National Oceanic and Atmospheric Administration (NOAA) says disturbing the animals in their near-shore habitat could force them to swim to less favorable places, putting them at risk of attack by sharks and other animals. 

Besides, when people are around, dolphins become more active. Thus, they can’t get enough sleep. “Disturbing their resting behaviors can actually affect their long term health and the health of the dolphin population,” Ann Garrett of NOAA’s National Marine Fisheries Service told the Associated Press.

As a result, the NOAA wants to make rules to help protect the dolphins. For example, the agency may ban swimming with the Hawaii spinner dolphins. Or they may stop people from swimming in shallow bays when the dolphins are resting. Tour operators must also be taught to watch for signs to know when the dolphins are in their resting state.

【语篇导读】本文是一篇说明文。作者本文介绍了海豚的生活习性，以及与人类的相处，建议人们保护海豚。

Robert Owen was born in Wales in 1771. At the age of ten he went to work. His employer had a large private library so Owen was able to educate himself. He read a lot in his spare time and at nineteen he was given the job of superintendent(监工) at a Manchester cotton mill. He was so successful there that he persuaded his employer to buy the New Lanark mill in Scotland.

When he arrived at New Lanark it was a dirty little town with a population of 2,000 people. Nobody paid any attention to the workers' houses or their children's education. The conditions in the factories were very bad. There was a lot of crime and the men spent most of their wages on alcoholic drinks.

Owen improved the houses. He encouraged people to be clean and save money. He opened a shop and sold the workers cheap, well-made goods to help them. He limited the sale of alcoholic drinks. Above all, he fixed his mind on the children's education. In 1816 he opened the first free primary school in Britain.

People came from all over the country to visit Owen's factory. They saw that the workers were healthier and more efficient than in other towns. Their children were better fed and better educated. Owen tried the same experiment in the United States. He bought some land there in 1825, but the community was too far away. He could not keep it under control and lost most of his money.

Owen never stopped fighting for his idea. Above all he believed that people are not born good or bad. He was a practical man and his ideas were practical. "If you give people good working conditions," he thought, "they will work well and, the most important thing of all, if you give them the chance to learn, they will be better people."

【语篇导读】本文是一篇记叙文。本文就Robert Owen的一生做传，描述了他的传奇一生，从中我们更能学到他的精神，这才是我们学习的精髓，内容充满社会正能量。