Off the coast of Hawaii's Big Island swim masses of colorful tropical fish. Some of these fish will be caught and sold, ending up in aquariums around the world. Is the industry putting populations of the fish at risk?

    Scientists who have studied the Big Island fishery say it is well managed. Rules put in place more than 15 years ago have helped to protect the fish. Along 35% of the coastline, for example, fish collecting is banned. Two years ago, the state cut the number of fish species for the aquarium trade from hundreds to just 40.

    Conservationist Robert Wintner objects to the findings. Wintner, who owns snorkel shops across Hawaii, started the Snorkel Bob Foundation to protect the island's coral reefs(珊瑚礁). He says he simply doesn't see yellow tang(刺尾鱼)in the protected areas. “There should be millions of them,” he says. “Where are they?”

    Wintner says people believe the numbers in reports. But few people have actually dived into the coral reefs to see for themselves how many fish can be found there. According to Wintner, the coral reefs along the coast should be filled with yellow tang, but they are “virtually empty”. Empty reefs are not good for tourism, Wintner points out, which brings out $800 million yearly. By contrast, the aquarium-fish trade brings out just $2 million yearly.

    Have you ever found yourself in this situation：You hear a song you used to sing when you were a child-a bit of nostalgia（怀旧）or "blast from the past，"as we say．But it is not a distant childhood memory．The words come back to you as clearly as when you sang them all those years ago．

    Researchers at the University of Edinburgh studied the relationship between music and remembering a foreign language．They found that remembering words in a song was the best way to remember even one of the most difficult languages．

    Here is what they did. Researchers took 60 adults and randomly divided them into three groups of 20．Then they gave the groups three different types of "listen-and-repeat" learning conditions．Researchers had one group simply speak the words．They had the second group speak the words to a rhythm，or beat．And they asked the third group to sing the words．

    All three groups studied words from the Hungarian language for 15minutes．Then they took part in a series of language tests to see what they remembered．

    Why Hungarian，you ask ? Researchers said they chose Hungarian because not many people know the language．It does not share any roots with Germanic or Romance languages，such as Italian or Spanish．After the tests were over，the singers came out on top．The people who learned these new Hungarian words by singing them showed a higher overall performance．They did the best in four out of five of the tests．They also performed two times better than those who simply learned the words by speaking them．

    Dr．Katie Overy says singing could lead to new ways to learn a foreign language．The brain likes to remember things when they are contained in a catchy 3，or memorable 4，tune 5．

    Dr．Ludke said the findings could help those who struggle to learn foreign languages．On the University of Edinburgh's website Dr．Ludke writes，"This study provides the first experimental evidence that a listen-and-repeat singing method can support foreign language learning，and opens the door for future research in this area．"

    You have probably heard the saying,"When life gives you lemons,make lemonade."Since lemons are considered bitter and lemonade is considered sweet,the saying tells you to make the best out of a bad situation.

    Unfortunately,when something bad happens,it's not uncommon for most people to talk about it to anyone who'll listen,and complain about life,"Why me?"That's like getting a bag of lemons,putting them down,and thinking, "Lemons taste bad!I'd rather have chocolate!"If you don't make anything with the lemons,they will go bad.But what if you did something with them?What if you made lemonade?Isn't it possible to do something similar with a bad situation?

    Here's an example.Let's say you're about to go to the movies,but you discover you have a flat tire（瘪胎）.You consider this a terrible thing. After all,you are really looking forward to spending some time with Ryan Gosling and Emma Stone.Now you're all stressed out,hating the tire,the car,and your life.But what if you called AAA,got your tire fixed or got caught up on things that you'd been meaning to do?What if you did some reading,or had coffee with a friend instead?A negative experience can be turned into something positive.Almost anything can work itself out into something better.You can't change what has happened,right?So make the best of it.I'm not saying it will be easy. The easy thing to do is complain about your bad situation and not consider what it could be turned into.

    Next time when some unfortunate things happen,stop and think,"How can I turn this around?How can I make it a positive experience?You needn't fear difficulties.As long as you keep on changing it,you will see the benefits（好处）at last.

    A family in Florida had a happy Christmas this year thanks to two local police officers, who answered a 911 call only to discover there was no emergency at all.

    When they arrived at the house of a single mother with two children, the officers discovered the younger child, about two years old, was playing with the phone. There were no signs of Christmas or holiday cheer in the house. "They weren't smiling. It seemed like they weren't happy at all. They were missing something," Officer Paramore said. "The mother mentioned that they weren't going to have a Christmas that year. It was pretty obvious that the family was struggling," he said. "So we told each other that something had to be done."

    Paramore and his partner, Barry Ward, left the house with a plan. The next day, they went to a supermarket and bought a tree, lights and some ornaments (装饰物) with their own money. Then they returned to the apartment to deliver some holiday cheer. "They hugged the tree," Paramore said. "I was glad to see that this family was going to have something to sit around and use." The police department posted the video on YouTube, hoping to share the happy news and inspire others.

    The department has received tons of donations and phone calls from people around the country asking how they can help the family. "We are covered," said Stephanie Slater, public information officer for the Boynton Beach Police Department. "We're asking people to do good in their communities on behalf of our officers. We appreciate it very much that people are talking about this after watching the news on TV because they need to see and need to be reminded that police officers are good guys," she said. "They are human beings who have a kind heart and they do things that go unnoticed like this every day."

    Many years ago, there lived a poor fisherman. His only companion was his dog. They might be seen walking on the white sandy beach.

    The dog was always beside his master as the fisherman made his little boat ready to sail. When the man pulled out to sea each morning, the dog would run up on the high ridge (山岭). There he would sit and watch all day. The dog never moved until late afternoon when he saw the little boat return. Then he would race back to the shore to greet his master.

    As the years went by, the fisherman grew older. So did the faithful dog. The fisherman still went out to sea. The dog still watched for his return, sitting on the high ridge.

    One early morning in September, the fisherman was getting his little boat ready. All at once the dog began to bark. He circled around the fisherman and tugged at his trousers. The fisherman could not remember when he had seen his dog act so strangely. He patted the dog's back, thinking the dog wanted to play. But nothing made any difference. Then the man climbed into the boat and sailed away. The dog went to his watching place, still barking.

    There were other fishing boats out that morning. Suddenly the soft wind changed. It began to blow wildly. The fisherman's boat was seized by the wind and whirled around (随风旋转) .The sky darkened. Rain began to fall.

    "It's a hurricane!" said the fisherman." The man thought of his dog at once. Had the dog left the ridge and run home? Or was he still sitting there? The fisherman tried to drive his boat and turn it toward the shore. Suddenly a great wave swept over his head and tossed the boat away (卷走).

    The next morning, the hurricane was over. The families of the other fishermen ran to the shore. They watched for the return of the boats. They waited and waited, but no one returned. Then the people went slowly back to their homes and started a new life. As they rebuilt their village, no one gave a thought to the fisherman's dog.

    Several months later a group of villagers was out gathering sea grapes (海葡萄). They noticed what appeared to be the figure of a dog sitting high on the ridge.

    "Look" said one." Isn't that the old fisherman's dog?"

    "How could it be, after all this time?" said another.

    When the man reached the spot, he found only a rock—a rock shaped like a dog. But as soon as the people looked up again, they saw the stone dog. He just sat there on top of the ridge, waiting, waiting…