The sound of a mosquito can mean trouble in many parts of the world. The bite of the mosquito can be deadly. The insects carry serious diseases like malaria (疟疾). It is estimated that almost 630,000 people died from malaria and malaria­related causes in 2012, and most of these cases were in African countries.

    In the United States, a group of California scientists are working to develop a more effective and less costly substance (物质) to protect people from mosquitoes. The researchers are investigating the sense of smell in mosquitoes. They found the insects use the same receptor for identifying carbon dioxide in human breath as they do for the smell of our skin. Anandasankar Ray, who is leading the investigation, says scientists tested more than a million chemical compounds (化合物) until they found a substance called Ethyl Pyruvate. He says Ethyl Pyruvate makes the mosquitoes' receptors inactive. “When we apply Ethyl Pyruvate to a human arm and offer it to hungry mosquitoes in a cage, very few of the mosquitoes are attracted to the human arm because only a few of them are able to smell it out,” said Ray.

    Genevieve Tauxe, a member of the research team, says it was not easy to find the neurons (神经元) of noble cells that recognize both the smell of human breath and skin. “With the device used to examine the mosquito, we are able to insert a very small electrode (电极) into the part of the mosquito's nose, where its smelling neurons are and where the smell is happening,” said Tauxe.

    Anandasankar Ray says a product based on Ethyl Pyruvate may cost less to produce than DEFT, the most effective chemical treatment now in use. He says DEFT is too costly for most people who live in areas affected by malaria.

    “Perhaps by finding smells that can attack other target receptors, we will be able to improve upon DEFT and finally have the next generation of insect behaviour control products,” said Ray.

    The loneliest chimp(黑猩猩)in the world just got the best surprise—a hug from a new friend．Ponso has been by himself for nearly three years，finding himself alone after his wife and children died on the island where they were abandoned by a medical testing company many years ago．

    For years a nearby villager named Germain has been Ponso's only company，visiting him so often to bring bananas and bread—the chimp's only source of food on the tiny island．It was clear how much Ponso missed companionship when he was recently visited by Chimpanzee Conservation Centre Director Estelle Raballand．The chimp immediately embraced Estelle Raballand in a huge hug and laughed as she reached out for him，with his smile from ear to ear．

    For those who know Ponso's backstory，his immediate ease and trust in humans might be surprising．Ponso was one of 20 chimps，all between the ages of 7 to 11 years old，relocated to an island off the Ivory Coast after being used for testing by the New York Blood Centre．After the tests were completed in 2005，the lab reportedly transferred the chimps to a string of islands，occasionally dropping off food and water because there was none in the chimps' new homes．

    Disease and hunger soon left only Ponso，his mate and their two children standing．But at the end of 2013 they died within days of each other and Ponso was now completely alone．

    A group called SOS PONSO is trying to raise money for the poor lonely chimp，already achieving its goal of $20,000 - all of which will be used for Ponso's care．

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    Health is the most important thing in the world. Nothing is more important than health.If we take away our money，houses，or even our clothes，we can still survive.{#blank#}1{#/blank#} That is why we always try to eat in a healthy way and exercise regularly.

    How can we keep healthy？In order to eat healthily，I usually avoid eating food high in fat，like French fries or cookies，which are junk food.{#blank#}2{#/blank#} I eat a lot of vegetables and fresh fruit which are full of vitamins.

    {#blank#}3{#/blank#} Taking exercise every day helps us build a strong body.Regular exercise is an important part of keeping me healthy.

    What's more，I think friends are an important part of one's health.{#blank#}4{#/blank#} I always feel better when I am with friends than I am alone.When I am with friends，I always laugh.Laughing is also an important part of health.It's good to stay with my friends.

    By eating properly and exercising regularly，I can keep my mind as well as my body happy.These things sound easy to do，but not many people can manage them.{#blank#}5{#/blank#}

A．In addition，doing exercise is very important.

B．There are some people who like staying alone，but they keep healthy.

C．Many studies show that people with a wide range of social contacts don't get sick.

D．But if our health was taken away，it is certain that we would surely die.

E．I think a strong will is necessary if we want to keep healthy.

F．I only eat little meat.

G．Some people appear fat because they often eat too much.

    The following are the top things to do in Tampa Bay on the weekend.

    A punctual person is in the habit of doing a thing at the correct time and is never late for anything.

    An unpunctual man never does what he has to do at the right time. He is always in a hurry and in the end loses both time and his good name. A lost thing may be found again, but lost time can never be got back. Time is more valuable than material things. In fact, time is life itself. An unpunctual person is always wasting his most important things as well as others'. An unpunctual person is always saying unhappily that he finds no time to answer letters or return calls. But the man who really has much to do is very careful of his time. He knows that he cannot finish all his work unless he carefully does every piece of work.

    Being unpunctual is the sign of disrespect towards others. If a person is invited to dinner and arrives later than the time when he should be there, he keeps all other guests waiting for him. Usually this will be thought as a great disrespect for the host and all the other guests.

    Not like a punctual person, an unpunctual one cannot do his duty wonderfully, whether it is public or personal. Imagine how it would be if those who should do important tasks failed to be on time. A man who is known to be unpunctual is never believed by his friends or fellow men.

More than 400 athletes across a variety of sports, ages and levels of experience were questioned for the study by sports psychology experts from Staffordshire University and Manchester Metropolitan University. The findings reveal that athletes' belief systems—specifically irrational（非理性） beliefs—are related to poorer self-confidence, and in turn, greater competitive anxiety and depressive symptoms.

"Phrases that reflect self-depreciating（贬低） beliefs such as 'If I lose, I'm a failure' or 'If I face setbacks, it shows how stupid I am' are warning signs," said the authors. Paul Mansell, Lecturer in Sport and Exercise Psychology at Staffordshire University, said, "Despite the psychological benefits of physical activity, studies frequently report poor mental health in athletes, which may be exacerbated by adversities, such as injury, de-selection, and performance pressure. We investigated athletes' beliefs, how they view stress, their levels of self-confidence and put all this data together to work out what might predict psychological well-being. We found irrational beliefs to be a core reason for symptoms of poor mental health in athletes."

This is the first known study that has examined irrational beliefs, self-confidence, and the psychological well-being of athletes all together. Irrational beliefs are extreme, rigid, and illogical ideas that people hold. For example, a person might believe that they "must" get what they want, or that just because they have failed, they are a "complete failure".

"We can all work to help athletes develop mindsets that help them deal with the challenges of sport and life. By encouraging rational and logical beliefs about performance, we can help athletes to stay healthy amidst the high demands of competitive sport," said Paul Mansell.

The author s propose Rational Emotive Behavior Therapy(REBT) as an effective tool for protecting self-confidence. REBT helps athletes to challenge these self-depreciating beliefs and develop beliefs that are more helpful and healthy. For example, rather than believe "I am a failure if I fail", this might be countered with "Failing is not ideal, but it does not mean that I am a failure".