Most animals have little connection with animals of a different kind, unless they hunt them for food. Sometimes, however, two kinds of animals come together in a partnership (伙伴关系) which is good for both of them. You may have noticed some birds sitting on the backs of sheep. This is not because they want a ride, but because they find easy food in the parasites (寄生虫) on sheep. The sheep allow the birds to do so because they remove the cause of discomfort. So although they can manage without each other, they do better together.

    Sometimes an animal has a plant partner. The relationship develops until the two partners cannot manage without each other. This is so in the corals(珊瑚) of the sea. In their skins they have tiny plants which act as “dustmen”, taking some of the waste products from the coral and giving in return oxygen which the animal needs to breathe. If the plants are killed, or are even prevented from receiving light so that they cannot live normally, the corals will die.

    One of the many great lines in the movie Apollo 13 came from Ed Harris, who played NASA Director of Operations, Gene Kranz. The famous line was, “Gentleman, failure is not an option.” He said the words because he had a clear purpose that the three astronauts trapped in space must be sent home safely. The driving force behind their seeking of a solution was motivated by a true purpose.

    Here is the simple principle. If you have a big enough 'why' in life, you will always figure out the 'how.' A person without a purpose in life is like a boat without a rudder, floating aimlessly without a direction and going nowhere. In all walks of life, when referring to someone's success, we often hear the words “focus and determination”. But Merriam Webster defines the word “purpose” as the reason why something is done, a feeling of being determined to achieve an outcome. There are many talented and intelligent people in the world that are unsuccessful because they lack direction. I believe that our life depends on our purpose. Whether you're single or in a team, having a purpose allows you to start, evaluate, and improve your talents or abilities helps you find your path in life and achieve your success finally.

    A friend of mine once told me that the most motivating speech he had ever heard was just three short words. It came from his wife when she said, “Honey I'm pregnant.” He said those few words instantly motivated him because he now had a big “why” in his life, a purpose to work hard to support his family. In fact, when your “why” gets bigger, you get better because you stop holding back and you'll go all out. It's why you often hear about some great people perform superhuman actions when failure is not an option!

    As an oceanographer（海洋学家）, I've spent many years developing robots to explore the ocean, and now we're putting that technology to use in our JASON Project, a program that's designed to inspire students and get them interested in science, technology, engineering and mathematics. In theaters throughout the country, we bring kids together and send back to them on large screens our live explorations of large areas of the globe. Not only are the kids observers, but they can operate robots moving across the area while broadcasting images back to them. The kids have the sensation（感受） of really being at the site with us.

    I believe advances in robot technology will one day be the key to a new kind of travel. In the next 10 or 15 years, people will have rooms in their houses that will be able to simulate (模拟) other environment. I like to call this rooms “home domes” -- small theaters with screens and advanced equipment that can reproduce the sights, sounds, smells, and feel of a desert, or a forest. Hand in hand with these rooms, I can see a market for travel robots located in countries around the world. You could rent (租)a robot working in a rain forest, then go into your home dome, where you yourself operate the robot's movements. The equipment in the room will receive the sensations in the robot's environment and simulate them for you.

    Today, much of the world's population never travels more than 50 or 60 miles from home. And even a person with enough time can see only a part of the earth's sights. But this new way of travel will cost so much less in both time and money and allow people to see a lot more of the globe. And simulated travel will also help protect our planet. You can't take large groups of tourists to look at Dian Fossey's gorillas（大猩猩）. But a small robot, with no animal smell, can get very close to a gorilla and send the sights, sounds, and smells back to a million people.

    Bees in a colony work with each other to gather food, and they try to find the most nectar (花蜜)in the least amount of time possible. A small number of bees work as searchers, but when a good flower patch (花丛) is found, how do they tell other bees where to find it?

    Bees communicate flower location using special dances inside the hive, where bees live. One bee dances while the other bees watch. The dancing bee smells like the flower patch, and also gives the watching bees a taste of the nectar she has gathered. Smell and taste helps other bees find the correct flower patch. Bees use two different kinds of dances to communicate information: the waggle (摇摆) dance and the circle dance.

    Waggle dance

    The waggle dance tells the watching bees two things about a flower patch's location: the distance and the direction away from the hive.

A. Distance

    The dancing bee waggles back and forth as she moves forward in a straight line, then circlesaround to repeat the dance. The length of the middle line, called the waggle run, shows roughly how far it is to the flower patch.

B. Direction

    Bees know which way is up and which way is down inside their hive, and they use this to show direction. How? Bees dance with the waggle run at a specific angle away from straight up. Outside the hive, bees look at the position of the sun, and fly at the same angle away from the sun.

    Circle dance

    The circle dance tells the watching bees only one thing about the flower patch's location: that it is somewhere close to the hive.

    In this dance, the bee walks in a circle, turns around, then walks the same circle in the opposite direction. Sometimes, the bee includes a little waggle as she's turning around. The duration of this waggle is thought to indicate the quality of the flower patch.

Although I learned English for years. I could not speak in complete sentences when I studied in London as an exchange student. In the beginning, I even needed to think twice before replying to a simple greeting. {#blank#}1{#/blank#}If you have a similar experience, here are some tips. 

Practice "output" more often; {#blank#}2{#/blank#} It's OK to start with only simple sentences or short paragraphs. Meanwhile, you can even practice your grammar.

At the time I didn't have opportunities to talk with the local people. So, I self-talked to describe what happened around to myself.

Another method is that you can record yourself speaking and then listen to the recordings to identify areas that needs improving. {#blank#}3{#/blank#}

{#blank#}4{#/blank#}

Language is not a hard science. It is more than just a set of rules, but a means of communication. Like small children picking up their mother tongue, we can get speaking skills more naturally by becoming completely involved in the language and using it. When using a language, we focus on the idea itself, rather than the rules.

Find the "support group" that suits you, 

Find a native tutor. A language tutor is a great idea where you can practice regularly and get your mistakes fixed in time. {#blank#}5{#/blank#} I feel much less shy when I speak English with other non-native speakers there. For example, joining a language group is really a great way to practice output.

A. Communicate with local children.

B. Raise your mind like a kid.

C. It is of much benefit to write in the language.

D. It was so painful that I was so confused about my language ability.

E. Or try some language clubs.

F. It is easier for you to "open your mouth".

G. It doesn't matter if you make mistakes.

A significant proportion of the American populace within the working-age demographic are encountering challenges in meeting the financial demands associated with health care, as per a recent comprehensive evaluation. This study, which is the inaugural edition of the Health Care Affordability Survey conducted by the Commonwealth Fund, reveals that a substantial 51 percent of adults falling within the age bracket of 19 to 64 years have expressed that affording health care for themselves and their family is either exceedingly challenging or moderately difficult. This observation encompasses 43 percent of individuals who are beneficiaries of health insurance provided by their employers and an even higher 57 percent who have secured health insurance through a marketplace or have opted for an individual plan.

Additionally, it is noteworthy that nearly one-half of the working-age adults who are under the Medicare program and 45 percent of those who are recipients of Medicaid also admit to facing hardships in covering their health care expenses. It is particularly striking that a majority, specifically 65 percent, of working-age adults have indicated that the escalation in the cost of various goods and services over the past year has had a detrimental impact on their capacity or that of their family to manage health care expenses.

The aforementioned survey, which is based on a sample that is representative of the nation and comprises nearly 7,900 individuals who are 19 years of age or older, was carried out from the mid-point of April through the month of July in the current year. This survey follows on the heels of another analysis conducted by the research entity known as KFF, which demonstrated an upward trend in the costs associated with health insurance for employer-sponsored plans as well as an increase in the contributions made by workers towards these plans in the year 2023.

The newly disseminated analysis has further unearthed that 38 percent of the individuals who participated in the survey identified cost as the primary factor that led them or a family member to either forgo or postpone the receipt of necessary health care services or the procurement of prescribed medication within the last 12 months. This includes 29 percent of those who are under the protection of employer-based coverage, 37 percent who are insured through individual and marketplace health plans, 42 percent who are covered by Medicare, and 39 percent who are recipients of Medicaid.

Furthermore, it is observed that more than six-tenths of the individuals who are devoid of any form of health insurance have reported that they or a family member have had to delay or forgo medical care due to financial constraints. Among all those who have reported such instances of skipping or delaying care, a considerable 57 percent have stated that a health issue has consequently deteriorated.