However, there is some difference in lifestyle between city settlers and the country people. Almost 90 percent ofthe population lives in the fast-paced cities along the coast and has little more than a passing familiarity with the desert. The major cities preserve images of colonial heritage, but on the whole the impression is modern, with new buildings reflecting the country's youth. In contrast, therural communities tend to be slow-moving and conservative. For many years, Australia was said to have "ridden on the sheep's back" , are ference to wool being the country's main money earner. However, it is nolonger dominant ( 主宰的). Much of Australia's relatively sound economy is now achieved from natural coal and wheat, and by being the largest diamond producer in the world. Newer industries such as tourism and wine making are also increasingly important. Australians are generally friendly and relaxed, with a modest sense of humor.

    Yet, contrary to wide spread belief, very few Australians have true prisoner origins. Within only one generation of the arrival of the First Fleet in 1788, Australia had become a nation of immigrants. Originally coming almost entirely from the British Isles, today one in three Australians comes from elsewhere. Australia's liberal postwar immigration policies led to a flowing of survivors from war-torn Europe. The emphasis has changed in recent years and today the majority of new immigrants are from Southeast Asia. Today Australia is a "mixture of nations" and although some racism exists, it has generally been a successful experiment and the country is reasonably proud to have one of the most harmonious multicultural communities in the world.

    Taking a math test can be pretty stressful. Even if you know the material, you can still get the problem wrong. {#blank#}1{#/blank#} Therefore you'll improve your grades, as well as your math skills.

    Write it out

    You can also check a math problem by writing everything out on paper. {#blank#}2{#/blank#} Writing out math problems reduces your chances of missing anything to the lowest possible level, which is a common cause of incorrect answers.

    {#blank#}3{#/blank#}

    Make sure your answers work by doing the opposite procedure of what your problem calls for, including the answer you got the first time around. In other words, you would use the opposite of this addition problem—subtraction (减法)—to determine whether your answer is the correct one.

    Plug in（代入）

    You may find that a variable isn't good enough or have a problem where you have to solve for a variable (变量). {#blank#}4{#/blank#} This is the only real way to assure yourself that the answer you've found is correct.

    {#blank#}5{#/blank#}

    If the result of a problem seems to make no sense, it indicates that the answer is incorrect. For example, if you get an answer in the millions and you know it should be in the thousands, you've likely misplaced a point. Go back through the work on your paper to make sure all of your formulas and calculations are correct. If everything looks okay, do the problem again and compare the result of the second try to what you've got on the first try.

A. Do the opposite.

B. Correct the answers.

C. Plug the variable in the equation (方程) to check it out.

D. Knowing how to go through your math test and checking your work can save you from handing in a test full of mistakes.

E. It also helps you to figure out everything after you have already finished the test.

F. Check for a reasonable answer

G. This helps you to know what information you have and what information you need to solve.

    Argentina in the late nineteenth century was an exciting place. Around 1870, it was experiencing an economic boom（繁荣）, and the capital, Buenos Aires, attracted many people. Farmers, as well as a flood of foreigners from Spain and Italy, came to Buenos Aires seeking jobs. These jobs didn't pay well, and the people felt lonely and disappointed with their new life in the city. As the unhappy newcomers mixed together in the poor parts of the city, the dance known as the tango(探戈舞) came into being.

    At the beginning the tango was a dance of the lower classes. It was danced in the bars and streets. At that time there were many fewer women than men, so if a man didn't want to be left out, his only choice was to dance with another man so that he could attract the attention of the few available women. Gradually, the dance spread into the upper classes of Argentinean society and became more respectable.

    In Europe at this time, strong interest in dance from around the world was beginning. This interest in international dance was especially evident in Paris. Every kind of dance from ballet(芭蕾舞) to belly dancing could be found on the stages of the Paris theaters. After tango dancers from Argentina arrived in Europe, they began to draw the interest of the public as they performed their exciting dance in cafes. Though not everyone approved of the new dance, saying it was a little too shocking, the dance did find enough supporters to make it popular.

    The popularity of the tango continued to grow in many other parts of the world. Soldiers who returned to the United States from World War I brought the tango to North America. It reached Japan in 1926, and in 2003 the Argentinean embassy(大使馆) in Seoul hired a local tango dancer to act as a kind of dance ambassador, and promote tango dancing throughout South Korea.

    Keeping the memory in shape is important at any age, but it requires a bit more work as we grow. There are some simple activities that can improve your memory.{#blank#}1{#/blank#}

    Awaken your senses.

    Use your senses to help your memory store(储存) needed information. {#blank#}2{#/blank#}You can ask yourself like this: Is the sky a light blue or deep purple? The more involved(参与的) you can be in the information, the easier it is for your brain to store it.

    Use imagination and relation.

    Trying to remember names? Let's say you meet a man named Frank Parker. {#blank#}3{#/blank#}Tie the two together by picturing Frank dressed up in a hot dog costume(服装) parking his car in the parking lot. Now each time you see Frank, you should easily recall his name.

    Breathe deeply and relax.

    {#blank#}4{#/blank#}Relax, breathe deeply and slowly and let your mind ease up for a minute. Being relaxed makes it easier for information to be both stored and remembered.

    {#blank#}5{#/blank#}

    When you come upon something you need to remember, say to yourself, “Hey, pay attention and remember this!” You are giving yourself a wake-up call as well as giving your mind a marker that it can use to help in storing the new information.

A. Give yourself an order.

B. Get a good night's sleep.

C. Here are four of them to get you started.

D. Picture a hot dog for Frank and a car for Parker.

E. For example, note the colors of a picture you want to remember.

F. When we try hard to remember something we often become nervous.

G. The way you live influences not only your physical health but also your memory.

    With the summer holiday just around the comer, it seems like everybody is busy planning their vacations. Here are some lips that can help you enjoy your holiday without emptying your pocket:

    Travel off-season

    Go to your desired destination while the demand is low and take advantage of huge discounts. During the peak season, the hotel and flight prices increase quickly, and you'll likely spend more of your vacation time standing in line due to the rush of tourists.{#blank#}1{#/blank#}

    Eat like a local

    Why eat at big chain restaurants when you can experience something new?{#blank#}2{#/blank#}During your family trip, try new food where the locals eat. This will not just save money, but also provide you with a new and different experience. For smaller meals and snacks, avoid restaurants and try street food or other takeout.

    {#blank#}3{#/blank#}

    Websites can help you find discount hotel rooms. Look for places that do not charge extra for children if they use the existing bedding. Stay with the locals. If you and your family are going to 8tay for a longer period，renting a small apartment is a good choice.

    Choose local transportation

    {#blank#}4{#/blank#}Instead, take buses, railways or subways, which are always cheaper. If you are planning to stay for a while, you can consider renting a car. Hiring a car is much easier than carrying your bags everywhere if you are moving around a lot.

    Don't hesitate to bargain

    Tourist-heavy places are known for overcharging for just about everything. Clothes, travel goodies, souvenirs, etc. are very expensive at these places.{#blank#}5{#/blank#}Bargain hard to get the best price.

A. Save on hotels.

B. Surf the Internet while traveling.

C. So it's best to find out when the off-season starts.

D. Therefore, avoid buying anything there.

E. Planning your meals is another way to reduce your travel costs.

F. For this reason, you shouldn't feel ashamed to ask for bargains.

G. As a tourist, avoid taking taxis whenever possible, since they are expensive.

    Tencent announced yesterday that it will limit the daily time for youngsters to play its popular King of Glory game after parents and schools in Shanghai and other areas complained their children had become addicted to playing it.

    From tomorrow, children younger than 12 will only be allowed to play the game for a maximum(最大值) of one hour a day, and after 9 pm, they will be banned from logging into it, said Tencent. Those older than 12 will be able to play a maximum two hours a day.

    The game system will remind players the time they have been playing and young players will be forced to log out when the time is up.

    Tencent claimed these were the strictest measures in China's game industry to prevent addiction and the company expected they would ease parents' anxiety.

    The company also said it had updated its system for parents to keep tabs on their children using its games.

    Since February, parents can receive messages when children log in and spend money on the game after they connect children's game accounts with their mobile phone numbers.

    Now, parents can connect phones, tablets or computers that their children use to play games, so that they can keep an eye on the children even if they have several game accounts, Tencent said.

    Song Zhe, a father of a Shanghai high school student, welcomed the measures but was not sure if they would be sufficiently effective. "I like the system that could lock up the devices as children can register many accounts," he said, "but children are so clever that they can always think out counter measures."