How to Introduce Yourself Before Giving a Speech

    Greet the audience and state your name. If you're giving a speech, it's important to state your first and last name. {#blank#}1{#/blank#}

    {#blank#}2{#/blank#} Don't state down or at some aimless point in the corner of the room. If you don't like the thought of looking into that many eyes, look at their eyebrows or noses—they won't be able to tell the difference.

    Share some relevant（相关的）information about yourself. After you provide your name, share why you and the speech are relevant, making sure you provide something believable. {#blank#}3{#/blank#} If you're giving a speech about the importance of eating organic foods, tell people that you're a scientist, chef, or environmental professional. If you're giving a speech about child development, be sure to include that you are a child psychologist.

    Communicate effectively. From the very start, make sure your voice is loud enough for everyone to hear you. You can even ask the audience if you are speaking loudly enough for all to hear. {#blank#}4{#/blank#}

    Move your body. {#blank#}5{#/blank#} Stand up tall, move your shoulders back, and keep your hands free, using them to gesture when necessary. You can walk around to show the crowd how comfortable you are and to make yourself look less stiff.

A. Make eye contact with a few people.

B. Focus just on what you are going to talk about.

C. Stand with good posture（姿势）, and move freely while you speak.

D. As you say hello and give your name, remember to speak clearly and confidently.

E. It depends on the context of the conversation, but start off by telling something about yourself.

F. People will not be able to understand you or respect what you are sharing if they cannot hear you.

G. The sort of information you share will depend on the audience and the subject you'll talk about.

    A killer whale(虎鲸) that can copy words such as “hello” and “bye-bye” is thought to be the first of its kind to copy human speech.

    The female killer whale learned to “speak” some human words by copying a trainer at a park in France. The animal's ability includes speaking the name “Amy” and “one, two, three”.

    Whales and dolphins are among the few animals except humans that can learn to produce a sound just by hearing it. “It is not often seen,” said Dr Josep Call, a co-researcher on the study. “Humans are good at it…Interestingly, the animals that can do best are marine mammals(海洋哺乳动物).” The researchers start to find out whether killer whales could learn new words by copying others. They studied a female named Wikie at Marineland Aquarium in Antibes, France. She was taught to speak human words.

    Dr Jose Abramson, a co-researcher on the study, said basic “conversations” with Wikie may one day be possible. He said,” It has been done before with a famous grey parrot and dolphins using American sign language(手势语).” However, he said they have to be careful about introducing human ideas on animals, as there is more to learn by trying to understand the natural way each kind communicates in its own environment. Wikie made sounds in water, which may be quite different.

    Dr Alex Thornton, senior speaker at the University of Exeter, said they still don't fully understand why some animals learn to copy. Some animals copy sounds to attract possible partners, while others copy sounds to become a member of a group. “Some whales, for example, learn their calls from one another to mark them out as members of their social group,” said Dr Thornton, who doesn't join in the research.

    Moving abroad can be a challenging experience. You leave your family, friends and everything you know behind. You enter a new culture where the customs and sometimes the languages are different. {#blank#}1{#/blank#}. It's a time to discover new things, make new friends and begin a new adventure.

    So what are the best ways to involve yourself in the new culture while living abroad?

    Live with a native speaker

    {#blank#}2{#/blank#}. First, you have a friend! Living alone can be a lonely experience, especially if you're far from home. I've also had the opportunity to meet my housemate's friends and socialize (交往) with them. {#blank#}3{#/blank#}. In addition, you have someone to tell you about the cultural customs and interesting places in the area.

    Socialize with the local people

    The thought of making friends and mixing with the local people may seem scary at first but it's worth it. {#blank#}4{#/blank#}, attending an evening class or participating in a language exchange with people that are interested in learning your native language.

    {#blank#}5{#/blank#}.

    The food in France is amazing and discovering new food is a fun experience. I've tried things that I've never tried before. My knowledge of different bread and cheese types has grown greatly.

    The recession (衰退) of 2008-09 was remarkable in rich countries for its intensity, the following recovery for its weakness. The labour market has also broken the rules, as new research from the OECD, a think-tank of mainly rich countries, shows in its annual Employment Outlook.

    Young people always suffer in recessions. Employers stop hiring them; and they often get rid of new recruits because they are easier to dismiss. But in previous episodes, such as the recessions of the 1970s, 1980s and 1990s, older workers were also kicked off. This time is different. During the financial crisis in 2008, and since, they have done better than other age groups.

    The researchers focus on movements in "non-employment" as a share of the total population in three age groups between the final quarters of 2007 and 2012. This measure has the advantage of including not just unemployment, where people are looking for work, but also inactivity, where people are not seeking jobs. Whereas the average non-employment rate in the OECD has risen by four percentage points among young people and by one-and-a-half points among 25-to 54-year-olds, it has fallen by two points among the 55-64 age group.

    Why have older employees done so well? In some southern European countries they benefit from job protection not afforded to younger workers, but that did not really help them in past recessions. What has changed, says Stefano Scarpetta, head of the OECD's employment directorate, is that firms now bear the full costs of getting rid of older staff. In the past, early-retirement policies provided by governments (in the mistaken belief that these would help young people) made it cheaper to push grey-haired workers out of the door. These have largely stopped.

    Many will argue that older workers have done better at the expense of the young. That view is wrongheaded. First, it is a fallacy that a job gained for one person is a job lost for another; there is no fixed amount of work. And second, as the report shows, young and old people are by and large not substitutes in the workplace. They do different types of work in different types of occupation: younger people are keen on IT firms, for example, whereas older folk tend to be employed in more traditional industries. There are plenty of things that should be done to help the young jobless, but kicking older workers out of the workplace is not one of them.

Volunteering is a great way to support an organization and make a difference in your community. It can also be an opportunity to meet new people and learn new skills. {#blank#}1{#/blank#}And what should we plan for? Here's a guide for beginners.

Step 1: {#blank#}2{#/blank#}

Do you want to help the world, or your community? Do you want to build your own skills, make new friends, and learn? Do you love what you do? Do you want to share your gifts with others or give something back? Think about these kinds of questions. That can help you to choose the right direction for your volunteer work.

Step 2: Choose an organization that is meaningful to you.

If you feel strongly about literacy (读写), for instance, volunteer at your local library or find out if there is an organization of volunteer tutors in your area. There are organizations doing all sorts of work. {#blank#}3{#/blank#}

Step 3: Start small.

If you already have a busy school life, volunteer your time for an hour or two a week, or perhaps one day a month. {#blank#}4{#/blank#}Then, if you find you enjoy the work and have more time to do it, take on more time by time.

Step 4: Get training.

If there is a training course, attend it. If not, talk to the group leaders and other volunteers about their experiences. {#blank#}5{#/blank#}

Step 5: Try not to give up.

Volunteer work sometimes involves unpleasant tasks, difficult fellow workers, busy days, or bad management. If you find your work difficult, however, try to work through it before you decide to quit.

A. Do you love to work with people?

B. But how do we go about volunteering?

C. Get to know others in the organization.

D. It is important that you choose something that you like.

E. Think about why you want to volunteer.

F. You'll pick up some good tips to make your work there more productive.

G. You might be surprised by how much you can do in even a little bit of time.

A lunar crystal (水晶) was found in lunar basalt particles (玄武岩颗粒) collected from the moon in 2020 when the Chinese moon mission landed in Oceanus Procellarum, returning with more than 1.7 kg of lunar samples delivered safely to the Earth. 

The crystal found on the near side of the moon is giving scientists hope of providing limitless power for the world forever. It is made of material previously unknown to the scientific community and contains a key ingredient for the nuclear fusion (核聚变) process, a form of power generation that uses the same forces that fuel the sun and other stars. It is transparent and roughly the width of a single human hair, and it formed in a region of the moon where volcanoes were active around 1.2 billion years ago. 

One of the primary ingredients found in this crystal is helium-3 (氦-3) , which scientists believe may provide a stable fuel source for nuclear fusion reactors. The element is incredibly rare on the Earth, but it seems to be fairly common on the moon. China's next moon mission is expected to be carried out by Chang'e 6 in 2024, which will attempt to collect the first samples from the far side of the moon, which never faces the Earth. 

Although it is too early for scientists to have made financial estimates on such a fuel source, it will undoubtedly be extremely costly. There is, of course, the matter of bringing the crystals back from the moon, especially in large amounts that are needed to fuel fusion reactors. 

Helium-3 produces significantly less radiation and nuclear waste than other elements. The current nuclear fusion process has raised serious safety concerns, and as a result, scientists have been searching for a way to create nuclear power from nuclear fusion. During the fusion process, radioactive waste is not produced, potentially making a securer and more efficient fuel source. 

Around 25 tons of helium-3 could power the US for a year. Multiple private companies and countries with space agencies have signaled their intentions to mine the moon for helium-3, and this latest discovery could kick start the race.