Mosquitoes have an extraordinary ability to find humans far away and fly straight to their skin. Mosquitoes can do more than cause an itchy (发痒的）wound. Some mosquitoes spread several serious diseases, including Dengue, yellow fever and malaria.

    Over one million people worldwide die from these diseases each year. New research now shows how mosquitoes choose who to bite.

    Mosquitoes need blood to survive. They are attracted to human skin and breath. They smell the carbon dioxide gas, which all mammals breathe out. This gas is the main way for mosquitoes to know that a warm-blooded creature is nearby.

    But mosquitoes also use their eyes and sense of touch. Michael Dickinson is a professor at the California Institute of Technology. His research shows how these small insects, with even smaller brains, use three senses to find a blood meal.

    Michael Dickinson's team used plumes—a material that rises into the air of carbon dioxide gas into a wind tunnel (隧道). They then used cameras to record the mosquitoes. The insects followed the plume.

    Then, the scientists placed dark objects on the lighter colored floor and walls of the tunnel. Mr. Dickinson said, at first, the mosquitoes showed no interest in the objects at all. “What was quite surprising is that the mosquitoes fly back and forth for hours. These are hungry females and they completely ignore the objects on the floor and wall of the tunnel. But the moment they get a hit of CO₂, they change their behavior quite obviously and now would become attracted to these little visual blobs (斑点).”

    This suggested to the researchers that a mosquito's sense of smell is more important in the search for food. Once mosquitoes catch a smell of a human or animal, they also follow visual signals.

    I was living a life in my screen and hardly noticed what was around me. So when my friends invited me to go camping for a long weekend without the cell service, I thought this was exactly what I needed. Here's how keeping away from my phone for 48 hours changed me.

    I realized my bedtime routine was usually centered on one thing: my phone. Right before I went to sleep, I browsed through news websites and checked my emails. When I woke up in the middle of the night, I did the same thing. The problem with this was I felt anxious every night. I felt free without my phone at that weekend camp. I felt asleep listening to the sound of crickets.

    When I had my phone, I was always checking the time and thinking of future plans. My thought was: “Who's going to text me now? What will I do next?” Without my phone, I truly savored what I was doing in the moment, sitting by the river, riding a bike, or singing the old songs. There was no need to rush through any of it. I listened to what my body wanted instead of what my phone was telling me to do.

    You know that moment when you're hanging out with a group of people and no one has anything to say? The typical response: Everyone immediately pulls out their phones. So what did we do without a phone to avoid embarrassing silences? We actually talked to each other. Instead of burying our faces in our screens, we looked one another in the eye, had a moment of pure human connection and then continued talking. And you know what? People actually listened.

    So, now what? Now I'm back to the real world.

    Confidence is a skill that many folks want to master, but have a hard time acquiring. Have you ever wondered why? Possibly you were born confident. You were talked to negatively as a child or maybe you were rejected many times. Whatever the case is{#blank#}1{#/blank#} But how to boost your confidence?

    Begin to act as if you are confident. Act as the person you would want to be like{#blank#}2{#/blank#} Surround yourself with people who you think are confident and have high value. You will learn so much from observing other confident folks.

    {#blank#}3{#/blank#}One of the most areas that you need to pay attention to is your self-talk. Your thoughts about your capabilities and self-worth need to be positive and encouraging. Whenever you notice you think negatively, pause and take a moment, and shift your focus to something that can help you feel better about yourself.

    Go after your goals. If you are really serious about building self-confidence, you need to identify your goals and go after them. The more you add to your accomplishments, the more confident you will feel about your abilities and skills{#blank#}4{#/blank#}

    By using these steps to boost your confidence{#blank#}5{#/blank#}

A. Always stay positive.

B. Improve your self-talk.

C. Begin to think and behave like them.

D. This requires you to know what a confident person looks like.

E. you will be on the path to improving your self-esteem (自尊) and self-worth.

F. You'll begin to trust your inner self more and appreciate yourself more.

G. you should know you can improve your self-esteem and build confidence.

    “You can't stop the waves from coming but you can learn to surf.”

    This is the title on a poster of the spiritual teacher, Swami Satchitdananda who is pictured wearing a loincloth（腰布）while staying down on a surfboard riding the ocean waves. It's a far-reaching reminder that no matter how hard we try, sometimes we will make mistakes. Life brings us trouble at times, and we carelessly make trouble for ourselves. It can't be helped. 'Learning to surf' is a metaphor（暗喻）for becoming good at handling life's difficulties and successfully repairing errors or mistakes that we may have made.

    Since we are all mistake-prone（易于犯错的）, to varying degrees, it's necessary for us to master the art of making effective repairs and corrections. We should, of course, by all means make our best effort to do it “right” the first time, but being human, our best efforts won't always prevent us from having moments or days when we wish that we could do that one over again. Since we can't always do “do-overs,” the next best thing is to correct our mistakes, and the best way to start this process is with an apology.

    Making an effective apology is both an art and a science. It requires the fulfillment（完成）of a number of conditions that must be met in order for both parties to feel satisfied with the outcome. The first thing to keep in mind is exactly that both parties must feel complete and satisfied with the outcome in order for things to get back on track after the breakdown.

    There are a number of components that increase the possibility that an apology will be effective. These conditions and guidelines apply to all relationships. They include patience, responsibility, sincerity, etc. With them, the chance of a successful apology will be high.

    When we have confidence that harm caused to the relationship through unskillful choices can be fully healed, we are motivated to use the methods that we know work to keep our relationship in the best possible condition. The belief that the trust, harmony, and love can be fully repaired, and perhaps even become more than it was prior to(在前面的) the breakdown, encourages us to hold a standard of excellence. And then we work hard to use every incident that occurs in the partnership to become stronger at the broken places. There is surely some work involved in the process at becoming good at repairs, but the rewards of a close, delightful, trusting relationship are well worth the effort!

    Back in 1988, I was working at the University of Bonn in Germany as a research fellow. I took some time off in early May to visit a friend, who was the director of a museum in Viterbo, in central Italy. I set out by train, which crossed the Swiss border to reach Zurich, winding through valleys and along hillsides, and entering tunnels and making its way through the Swiss Alps. The scenery was so beautiful.

    The train then crossed the Italian border before passing through Milan and Florence, then finally stopping in Rome. I was lucky, as my hotel was close to the railway station. The next morning, I had a coffee at a nearby café and eagerly set out to visit as many of the famous Roman landmarks as possible.

    The following day I headed back to the train station, intending to take a short train ride to Viterbo to meet up with my friend. When I arrived at the station and attempted to locate the correct platform, I quickly realized that the station was closed for an upgrade (升级). For a moment my mind went blank and did not know what to do. My biggest problem was my luggage—my suitcase and hand luggage were so heavy that I couldn't move about easily. As I don't speak Italian, I could not ask anyone for instructions. I dragged my suitcase about 100 meters to a nearby motor mechanics. A tall, strong man of about 50 years of age was working there and I excused myself and asked where the nearest station was. I am sure that he did not understand me properly but he could easily guess that I was looking for a station. He replied, but I did not understand.

    He smiled, wiped his hands and said something, which I guessed to mean "come along". So I dragged my suitcase along and followed him. He opened the door of his car, motioned to me to get in and then drove for a few minutes to the next station. I got out, unloaded my luggage, then shook his hand with thanks. He smiled back and drove away.

    There was no time to hug or exchange names  I understood he was busy and in the middle of his work. I was moved so much by his generosity that I have never forgotten him.

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