【推荐2】Four Efficient Ways to Improve Your Speech

One psychologist feels that our facial expression is responsible more than anything else for the impression others have of us.     1     People tend to mirror your expression, so try to show how you feel about a topic or an idea or the audience through your facial expression.

    2     The way to handle it is to put it to work for you, get into action, as Shakespeare observed, action cures fear. There are only a few known ways to control fear. If you're thoroughly prepared, apart from admitting it, taking deep breaths can add your confidence and calm. Other known ways to control nervousness and fear are to give yourself a pep talk or take some physical exercise, simple calisthenics（健美操）can work wonders in you.     3     you

Our voice is the main instrument we own for communicating with people, we're all sound sensitive.     4     I've done the same thing and I can promise you that even if you use candies instead of stones you can quickly develop excellent pronunciation. Do believe that am kind of practice will help improve your emphasis, pausing and other qualities of your voice.

Psychologists tell us that most individuals don't use above ten percent of their inherent capacity for memory. Because they don't practise the fundamentals of remembering. It's difficult to recall anything without wanting to have a burning desire to remember. Moreover, our success depends greatly on our ability to concentrate. The next principle is repetition. Next time you intend to keep things in mind in school, try to repeat them over and over again.     5    .

【推荐1】We are often asked the question “What do you want to be when you grow up?” and at some point, for example, as a high school student, you can't reply with 20 different things. Well-meaning adults will likely tell you to focus on being one thing. You are quite often told that we each have one great thing we are meant to do during our time on this earth, and you need to figure out what that thing is and devote your life to it.

But most of you are not born this way. There are a lot of different subjects that you're curious about, and many different things you want to do. When you are caught between choices, you might feel like you don't have a purpose or there's something wrong with. you There's nothing wrong with you. What you are is a multipotentialite.

There are some great strengths to being this way. Here are three multipotentialite superpowers.

One: idea synthesis. That is, connecting two or more fields and creating something new at the intersection. Sha Hwang and Rachel Binx drew from their shared interests in cartography, data visualization, travel, mathematics and design, when they founded Meshu, a company that creates custom（定制的）geographically-inspired jewelry. Sha and Rachel came up with this unique idea because of their mix of skills and experiences. Innovation（创新）happens at the intersections.

The second multipotentialite superpower is rapid leaning. When multipotentialites become interested in something, we go hard. We observe everything we can get our hands on. We're also used to being beginners, because we've been beginners so many times in the past, and this means that we're less afraid of trying new things and stepping out of our comfort zones.

The third mulipotentialite superpower is adaptability; that is, the ability to turn into whatever you need to be in a given situation. Abe Cajudo is sometimes a video director, sometimes a web designer, sometimes a Kickstarter consultant, sometimes a teacher, and sometimes, apparently, James Bond. He's valuable because he does good work. He's even more valuable because he can take on various roles, depending on his customers' needs. The economic world is changing so quickly and unpredictably that it is the individuals and organizations that can change in order to meet the needs of the market that are really going to thrive（兴旺发达）.

Therefore, to multipotentialites I say: embrace your many passions. Follow your curiosity down those rabbit holes. Explore your intersections. These will lead to a happy and real life. And perhaps more importantly—multipotentialites, the world needs us.

【推荐3】At the foot of Egypt’s Sinai mountains, once a small fishing town, Dahab is now one of the Red Sea’s top diving resorts(潜水圣地), attracting a lot of nature lovers. It also provides a stress-free seaside atmosphere where visitors can just sit back and enjoy its waters. There are affordable accommodations, tour operators, multicultural restaurants and cafes.

Dahab is also one of the few places in the area with internet access, making it attractive to remote workers looking for a peaceful “office” by the sea. Rahma Zein, who chose to go toDahab on the advice of friends, said, “On a normal day, I wake up, make breakfast, go for a free dive, hang out on the beach, take a hike, eat and then sleep.” she added, “In between sessions, I make phone calls and do my work.”

Located on the edge of the Red Sea, the Blue Hole is one of Dahab’s most famous sites and one of the world’s most famous diving sites. Going down to a maximum depth of 328 feet and easily accessible from the shore, the Blue Hole is not influenced by the currents, so its waters are relatively calm. The conditions here are perfect for free divers, as well as advanced divers looking to push their limits in a race.

To reduce the traffic here, a local group of divers have created an underwater museum filled with giant statues(雕像) made of recycled materials. The most impressive statue is a life-sized elephant weighing 700 kilograms which has gained the attention of countless tourists.

There are also limitless options in shallower waters for those who want to avoid crowded diving spots. Travelers can hike or ride camels to Ras Abu Galum National Protectorate, which covers 400 square kilometers of coastline and offers a better view of sea life.

【推荐1】Plants don’t have ears or a central nervous system, but new research out of the University of Missouri has demonstrated that they might still have the ability to “hear”. More specifically, plants have been shown to exhibit an immune (免疫) response to the mere sound of a hungry insect.

For the study, researchers played the sound of a caterpillar chewing to a group of plants, which caused slight vibrations (振动) on the plants’ leaves. The plants were able to recognize these vibration patterns as danger, and responded by mounting the appropriate immune response. In other words, it appears that plants can “hear” themselves being chewed on.

Researchers assume that plants achieve this remarkable ability thanks to proteins that respond to pressure found within their cell membranes. Vibrations cause pressure changes within the cell, which can change the behavior of the proteins; however, additional study will be required to confirm or deny this theory.

Once researchers identify the exact mechanisms at play in this process, it could lead to advances in crop protection. Farmers could potentially learn to use sound to cause a plant’s natural chemical defenses against insect threats, rather than turning to poisonous chemicals.

“We can imagine applications of this where plants could be treated with sound or genetically engineered to respond to certain sounds that would be useful for agriculture,” said study author Heidi Appel.

The study adds to the growing list of ways that plants have been shown to sense their environments. They are not the boring organisms that many people assume they are. For instance, some plants are able to communicate with each other and signal upcoming danger to their neighbors by releasing chemicals into the air. Plants can respond to light (think about sunflowers) and temperature. Some can even respond to touch, such as the Venus flytrap (捕蝇草), which snaps shut when an insect stimulates its hairs.

【推荐2】In Australia, plenty of wild things can bite or sting(刺伤) you. Strangely enough, one of them is a tree. Now scientists have figured out what makes the tree’s sting so bad.

The rainforests of eastern Australia are home to a stinging tree known as Dendrocnide. Many people call it the gympie-gympie tree—a name given to the tree by native Australians. It’s covered with sharp, needle-like hairs that carry poison. If you touch a gympie-gympie tree, you won’t forget it anytime soon. The pain can stay with you for hours, days or weeks. In some cases, it’s been reported to stay for months.

Scientists have long looked for the source of this powerful sting. Now researchers at the University of Queensland have discovered what makes this stinging plant so painful. After carefully studying different kinds of gympie-gympie trees, the scientists were able to separate out different chemicals that the trees produce. This allowed them to identify a group of chemicals that they believed was responsible for the pain.

The researchers created artificial versions of these chemicals, which they call “gympietides”. Sure enough, when the scientists injected mice with gympietides, the mice licked(舔) at the places where they’d been injected, indicating that they hurt in those places. When the scientists studied the way gympietides were built, they found that they formed a knot-like shape. The shape makes the chemicals very stable,                                 which helps explain why the pain stays so long.

The knot-like shape of the gympietides was similar to the shape of poisons produced by poisonous spiders and cone snails. The scientists were surprised to see three very different kinds of life all using similar poisons. Spiders and cone snails carry poisons because they catch food by stinging other creatures. It’s not clear how stinging helps the gympie-gympie tree.

Though the tree’s sting may stop some animals from eating it, it doesn’t stop all animals. Beetles and pademelons (small relatives of the kangaroo) are able to eat the plant without trouble.