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.

    Everyone can benefit from better communication. {#blank#}1{#/blank#}Of course, we know that isn't true, but this shouldn't stop you improving your communication skills. Here are a few tips to help you become a better communicator.

    {#blank#}2{#/blank#}

    Verbal (口头的) language is only one part of the communication — body language is another. If you ever wanted to know how to tell if someone is lying, body language is the answer. Your body language tells other people what you aren't verbally saying, such as if you are anxious, confident, confused, angry or any other type of emotion or state of mind. If you become great at reading body language, it will help you become a better communicator.

    Listen to others

    Before you ever begin to speak, take a minute to see if anyone else has something to say. {#blank#}3{#/blank#} Listening to others has many benefits, such as allowing you to learn new things or get information that you may later need.

    Think before you speak

    Your parents probably told you this as a child, but many people still do not take a moment to think about the words they are about to say. {#blank#}4{#/blank#} There is a time and place for all words and tones of voice.

{#blank#}5{#/blank#} You will have to practice your communication skills before you can ever become an excellent communicator.

A. To become a better communicator is not an overnight thing.

B. Singing a song for them is good.

C. Become fluent in body language.

D. Don't try to make the conversation go your way.

E. You should decide what you want to get in a conversation before you choose your words.

F. If you are too anxious, you can't look for the right body language to use in communication.

G. In fact, if everybody were excellent communicators, the world would be a much better place.

    “An apple a day keeps the doctor away.” Similarly, if we drink a little more water every day, we may find that we need to go to the doctor a lot less often. A healthy diet is made up of water and a great many different kinds of foods. We know that healthy foods like fruits, vegetables and fish, are important as they provide us with energy and fiber, without giving us too much fat and sugar. But why is water important?

    The human body needs water to survive. Water is important as it carries poisons and waste out of our bodies. So, doctors advise us to drink plenty of water, much more than the small amount we need to stay alive.

    Some doctors believe that water is important for our health in all kinds of ways. They believe that a great many illnesses and health problems start as a result of dehydration(脱水)—a lack of water in the body. Most people are dehydrated at least some of time, although they probably don't know it. It is surprising to learn that if we feel thirsty, we are already in the first stage of dehydration. In fact, we are advised to drink water before we feel thirsty.

    These doctors think that health problems such as headaches, high blood pressure and asthma(哮喘) could be helped if people drink more water. They also believe that drinking more water can help people who are overweight. Water contains no calories so it will not make us put on weight. If we drink water, we will probably drink less sugary soft drinks such as Coca-cola. Doctors also believe that drinking more water may stop people from overeating. They say that many people think that they are hungry when they are, in fact, thirsty. Doctors suggest, therefore, that we eat less food and drink more water. There are still many health problems that cannot be solved by drinking water, so we should not stop going to seeing the doctor completely. However, if we make a decision to drink water every day, we may find that we need to go to the doctor a lot less often.

    Shop with Your Doc is part of a broader and still growing movement in US medicine to shift the focus away from simply treating disease toward caring for the whole person. It is meant to help people make educated, healthy choices one grocery cart at a time. Across the country, hospitals are setting up food banks and medical schools are putting cooking classes on the curriculum. Nonprofits are connecting medical centers with community resources to ensure that low-income Americans have access to fresh fruits and vegetables.

    For centuries, Western medicine's mission was to cure disease. But over the past generation, two generation, two significant trends are of concern to the medical community, says Timothy Harlan, executive director of Goldring Center for Culinary Medicine at Tulane University in New Orleans. Healthcare costs began to soar (激增), and relatively inexpensive, poor-quality food became more common. "There's a very straightforward link between people improving their diets and improving the condition that they have," Dr. Harlan says.

    The connection drove the medical and nonprofit communities to rethink their approach to health. What emerged was the concept of the "social determinants of health"—the notion of taking into account the biological, physical, and socioeconomic circumstances surrounding a patient. A healthy person isn't just someone who is free from disease, the theory goes; he or she also enjoys "a state of complete mental, physical and social well-being."

    The question the medical community now faces is how to get patients—especially low-income families—to recognize these determinants and make it possible for them to eat and live healthier. In Boston, medical experts responded by creating an on-site pantry (食品室) at Boston Medical Center. Since its founding in 2002, the pantry has evolved into a kind of nutrition center where primary care providers at BMC send patients for food. Today the pantry, which gets 95 percent of its stock from the Greater Boston Food bank, hosts free cooking classes and serves about 7,000 people a month. The Greater Boston Food Bank has also launched its own initiatives, striking partnerships with four community health centers across the state to offer free mobile produce markets. The organization also helped develop toolkits (软件包) that map local pantries, markets that accept government food vouchers, and other resources.

    At Tulane in New Orleans, Harlan is leading the development of a curriculum that combines medicine with the art of food preparation. His philosophy: Doctors who know their way around a kitchen are better at helping their patients. And empowering patients to take charge of their own diets is one way to help them deal with the incredible costs of health care, Harlan says. The curriculum has since been adopted at 35 medical schools around the United States. Chipping away at bad habits is a good place to start getting patients to think about the choices they make for themselves and their families, say Dr Maureen Villasenor, the Orange County pediatrician (儿科医生).

A healthy lifestyle is related{#blank#}1{#/blank#}physical and mental fitness. It is time for you to make changes to live{#blank#}2{#/blank#}healthier life. Nowadays many people say they just don't get much time to look after

{#blank#}3{#/blank#}(they) health. However, it is what you do and eat every day that guarantees you a healthy body. So make some little changes in your schedule to improve your lifestyle. It's never too late.

These are some suggestions{#blank#}4{#/blank#}(give) by health experts which can help you achieve your goal. First of all, add healthy food items to your diet. For example, eating green vegetables and fruit{#blank#}5{#/blank#}(be) a must because they contain lots of vitamins and minerals{#blank#}6{#/blank#}are necessary to your body. Do remember to exercise{#blank#}7{#/blank#}(regular) because it will burn extra fats in your body and help you gain control of your{#blank#}8{#/blank#}(weigh). If you can't exercise every day, at least go for a walk every day. Sleep at least eight hours every day{#blank#}9{#/blank#}(make) you feel fresh and energetic. In addition, many people do some activities every day,{#blank#}10{#/blank#}(say) this helps them develop their mind. There are many things you can do to keep healthy, but exercising will always be placed at the top.

When adult humans meet a baby, many can't help speaking in a higher-pitched (更高音的) and sing-song y voice. This shift, known as parentese, is not unique to humans. It has also been observed in animals like monkeys and gorillas. Now, scientists are adding one more species to that list: bottle-nose dolphins.

Dolphins are intelligent animals that live and hunt in groups. They communicate in a unique way: Every individual produces its own signature sound that acts much like an ID card, usually by its first birthday. But how does each come up with its distinctive whistle? For babies, it might have something to do with listening to Mum. To solve this mystery, researchers examined the sounds mother dolphins make.

Scientists studied 34 years' worth of recordings of sounds made by 19 female bottle-nose dolphins. When the mother dolphins were near their young, they continued to make their signature sounds, but at a higher frequency. They also used a wider range of frequencies than they did when their babies were not nearby.

This discovery suggests that using these modifications, mother dolphins assist their young in learning how to produce these calls themselves. Since baby dolphins often spend some years with their mothers before living on their own, it makes sense that this adaptation would help them learn to communicate. At the very least, the higher-pitched whistle likely gets the babies' attention. "It's important for a baby to know, ‘Oh, Mum's talking to me now,'" says marine biologist Janet Mann.

This kind of research could help us understand how language developed in humans. "It is absolutely essential to have basic knowledge about other species and how they communicate," says Mann. "I would be really interested to see whether dolphins also change their sounds when interacting with babies of others, which is what happens in humans."