Different people use different languages. We Chinese speak Chinese, and, most of us are learning a foreign language. But there is another kind of language we need to know — the language of the body.

    All over the world, people “talk with their hand, with their heads and with their eyes.” When Japanese people meet, they bow. When Indians meet, they put their hands together. What do American and British do? Americans are more informal (不拘小节的) than the British. They like to be friendly. They use first names, they ask questions and they talk easily about themselves. When they sit down, they like to relax in their chairs and make themselves comfortable. British people are more reserved (保守的). They take more time to make friends. They like to know you before they ask your name.

    When British or American people meet someone for the first time, they shake hands. They do not usually shake hands with people they know well. Women sometimes kiss their women friends, and men kiss women friends (on one cheek only). When a man meets a man, he just smiles, and says, “Hello.” Men do not kiss each other, or hold hands. Even fathers and sons do not often kiss each other.

    Summer vacation is coming. Most of students want to have a good trip this summer. Here is some information about trips for you

    Giving generously and receiving gratefully make it easier to live happily with others. Yet, why do we have such difficulty accomplishing these things in our relationships? I think people refuse to be generous with others because they fear being used.

    For example, my husband and I have family members who only contact us when they need money. We usually accept their requests, but we rarely receive a “thank you”. Most people would say that my husband and I are being used. But when we give, we shouldn't be giving for the purpose of getting gratitude. Rather, we should be giving because it's a good thing to do.

    Everything that we have, from our ability to wake up each morning to the money in our bank account, is a gift from the world. In return, the world asks us to use these gifts to help others, either by giving them our time or our resources. The good news is that when we live our lives being nice to others, our lives run more smoothly.

    If you're generous, yes, some people will use you. But if you practice being generous, most of your relationships will improve. And at the same time, we should remember to receive gratefully. I truly believe that you cannot say “thank you” enough.

    So often we get lazy about expressing gratitude. Parents can feel unappreciated by their children, and teachers can feel unappreciated by their students. Just because a task is part of someone's job description doesn't mean that you shouldn't thank them for it.

    Words of appreciation make others feel good about themselves like nothing else. It's good for us to say “thank you” because we often need to tell ourselves how lucky we are.

    If you are looking for a way to improve your life, I can give you one: Give generously and receive gratefully.

    The koala is an unusual creature. Native to Australia and a bit bigger than a rabbit, it spends most of its time in eucalyptus trees（桉树）, feeding on leaves that are poisonous to nearly every other animal on the planet.

    The koala sleeps about 22 hours a day and spends the remainder of its time eating and resting. It might spend 10 minutes a day moving, experts say, usually from one tree to another. It has a soft pad at the end of its spine and extra thick fur on its rear end to make the effort, of sitting more comfortable.

    Threats and protective measures

    The unique lifestyle of the koala has helped it prosper, but today the cute and iconic creature is facing threats from habitat loss, disease and a changing climate. Koala populations are expected to decline by 50 percent in the next 20 years according to the Australian Museum.

    To help protect these animals, which bring in an estimated $1.1 billion to Australia each year through koala-related tourism, an international team of researchers has published the first complete genome（基因组）of the koala. Their hope is that the keys to the marsupial's（有袋动物）long-term survival might be planted in its genetic code.

"The ultimate goal is that we won't have to…rescue them from the edge of extinction," said Rebecca Johnson of the Australian Museum Research Institute in Sydney, who led the work.

    "Now we have a really good understanding of the koala genome, and we are in a fantastic position to use that knowledge to help us manage them."

    Early findings

    An elementary analysis of the koala's genome, published in Nature Genetics, has already yielded some interesting findings.

    For example, the authors found that, compared to other mammals, the koala's DNA includes an expansion in the number of genes that encode for enzymes involved in anti-poison. That allows them to have a diet that depends almost entirely on eucalyplus leaves which are unusually high in poison. However, it also means that koalas metabolize（代谢）medicines like anti-chlamydia antibiotics faster than other animals.

    The koala genome also revealed why koalas are such famously picky eaters. They are known to consume leaves from just 20 of Australia's 60 known eucalyplus species. And even when they are in one of their preferred trees, koalas take leaf selection very seriously.

    Information waiting to be discovered

    Johnson said that the information encoded in the koala's DNA is already being included in management strategies by conservation groups. However, she said the findings described in the new paper represent the early stages of what can be gleamed from the marsupial's genome.

    "The data is public, and I would love for anyone to start mining it and see what other amazing things they can find," she said." Once you have a genome of this quality, the sky's the limit with what you can do with it."

    If you're tired of the big city pace and noise, relax yourself by taking a day or a weekend exploring one of these four Georgia small towns：

    Senoia

    About 45 miles from Atlanta, if you want to visit the classic small town, Senoia is the best choice. Built in 1866 as a railroad town, its picture perfection has been filmed for the movies like Fried Green Tomatoes.

    Hartwell

    109 miles from Atlanta

    Named for Nancy Hart, a heroine of the Revolutionary War who served as a spy and captured a group of Tories who threatened her home, Hartwell is known as the "Best city by a Dam Site".

    Tiger

    105 miles from Atlanta in northeast Georgia, this small mountain community sits at the base of 2 856-foot Tiger Mountain, and you can drive Old U. S. 441 right through town and into the countryside any season of the year. The tiny town itself boasts the Tiger Drive-In.

Another attraction is the Tiger Mountain Winery, operating from the site of a five-generation old family farm and winner of three 2017 silver medals in the Los Angeles Wine Competition. Its tasting room is open daily.

    Tallulah Falls

    About 96 miles northeast of Atlanta

    Near the Tallulah River and named for the five falls that flow downward very fast through the gorge, Tallulah Falls had a population of just 168 at the 2010 census.

    It's a fine spot for fishing and picnicking on the town's three lakes，swimming at the Georgia Power Company's Terrora Beach. Come Saturday night in spring，summer and folk stay for live Bluegrass bands on Bluegrass Square in downtown Tallulah Falls. You can even bring your own instrument and join in.

Best Places to Visit in Winter

Rovaniemi, Finland

If you love ice and snow, then you'll love exploring Rovaniemi. Why? Simply because it's one of the top winter destinations in Europe. Sitting in northern Finland, Rovaniemi is the gateway to Finland's famous Lapland — the home of Santa Claus, Rovaniemi is the perfect place to watch the impressive Northern lights, go on a husky ride, or even visit an ice hotel.

St. Kitts & Nevis, Caribbean

If you're looking to escape the rain, snow, and grey skies, then St. Kitts and Nevis is one of the top places to go in the winter. This dual-island nation sits between the Atlantic Ocean and the Caribbean Sea. It has perfect weather all year round, with temperatures of 25℃ in winter. Apart from lying on the beaches, you can also enjoy the Carnival around Christmas, sailing and snorkelling tours, and historical tours of the islands.

Cape Town, South Africa

Cape Town is one of South Africa's most picturesque destinations, with loads of exciting things to do. From visiting the 7th Wonder of Nature, Table Mountain, to surfing the waves of the city's S amazing beaches, there's something for everyone. Cape Town is only a short drive away from the iconic (标志性的) Cape Winelands, where you can enjoy vineyard and winery tours with wine tasting and food pairings.

Lanzarote, Spain

With interesting rock formations, volcanoes, and amazing blue waters, Lanzarote is a top choice for many travellers running away from cold European winters. Lanzarote is the most eastern of the Canary Islands. Expect to find black and red earth, white and golden sand beaches and rolling mountains. The average weather stays around the 20℃ mark, so you can work on your tan without worrying too much about sunburn.