You may use banknotes every day. But did you know that there is a lot of science behind the money? {#blank#}1{#/blank#}

    Australia was the first country to use polymer(聚合物）banknotes in 1988. {#blank#}2{#/blank#}

They can stop water from making them wet. They are also cleaner because bacteria don't grow easily on them.

Now, the Australians have improved their banknotes again by creating a new 5-dollar note. The new one has a clear window in the middle in which there are pictures of an Australian bird and a building. {#blank#}3{#/blank#}

    Tilt (倾斜）the note a little and you will see the bird flapping its wings as if trying to fly away. Turn the note from side to side and you will notice the building come to life and spin. While these features are impressive and entertaining, that was not the reason why the Australian Government spent ten years perfecting them. Their primary purpose was to make it impossible to fake a banknote.

    {#blank#}4{#/blank#} The new $ 5 bill now has a raised bump alongside the two long edges, enabling the blind or those with limited vision, to quickly determine its value.

The Australian government will give the new 10-dollar note the same features in a year's time. {#blank#}5{#/blank#}

A. Note makers still have a long way to go.

B. Other notes will have them in the future.

C. The magic of the new features lies in them.

D. They have many advantages over paper notes.

E. The new Australian 5-dollar note is a good example.

F. The new note is also the first touchable Australian banknote.

G. Their material and pattern set them apart from ordinary banknotes.

UrbanizationUntil relatively recently, the vast majority of human being lived and died without ever seeing a city. The first city was probably founded no more than 5,500 years ago.{#blank#}1{#/blank#}In fact, nearly everyone lived on farms or in tiny rural (乡村的) villages. It was not until the 20th century that Great Britain became the first urban society in history—a society in which the majority of people live in cities and do not farm for a living.Britain was only the beginning.{#blank#}2{#/blank#}．The process of urbanization—the migration (迁徙) of people from the countryside to the city—was the result of modernization, which has rapidly transformed how people live and where they live.In 1900, fewer than 40% of Americans lived in urban areas. Today, over 82% of Americans live in cities. Only about 2% live on farms.{#blank#}3{#/blank#}Large cities were impossible until agriculture became industrialized. Even in advanced agricultural societies, it took about ninety­five people on farms to feed five people in cities.{#blank#}4{#/blank#}Until modern times, those living in cities were mainly the ruling elite (精英) and the servants, laborers and professionals who served them. Cities survived by taxing farmers and were limited in size by the amount of surplus（过剩）food that the rural population produced and by the ability to move this surplus from farm to city.Over the past two centuries, the Industrial Revolution has broken this balance between the city and the country.{#blank#}5{#/blank#}Today, instead of needing ninety­five farmers to feed five city people, one American farmer is able to feed more than a hundred non­farmers.

    Taking good notes is a time-saving skill that will help you to become a better student in several ways.{#blank#}1{#/blank#}Second,your notes are excellent materials to refer to when you are studying for a test.Third,note-taking offers variety to your study time and helps you to hold your interest.

    You will want to take notes during classroom discussions and while reading a textbook or doing research for a report.{#blank#}2{#/blank#}whenever or however you take notes,keep in mind that note-taking is a selective process.{#blank#}3{#/blank#}

    The following methods may work best for you.

    Read the text quickly to find the main facts and ideas in it.

    Carefully read the text and watch for words that can show main points and supporting facts.

    Write your notes in your own words.

    {#blank#}4{#/blank#}

    Note any questions or ideas you may have about what was said or written.

    As you take notes,you may want to use your own shorthand(速记).When you do,be sure that you understand your symbols and that you use them all the time,{#blank#}5{#/blank#}

A.Use words,not complete sentences.

B.There are three practical note-taking methods.

C.You must write your notes on separate paper.

D.Otherwise,you may not be able to read your notes later.

E.You will also want to develop your own method for taking notes.

F.That means you must first decide what is important enough to include in your notes.

G.First,the simple act of writing something down makes it easier for you to understand and remember it.

    A new study suggests that the timing of a wound affects the speed at which it heals(愈合). Wounds suffered during the day heal around 60 percent faster than those at night.

    The study showed how the body's circadian rhythm(昼夜节律) controlled the healing of wounds{#blank#}1{#/blank#} It tells our bodies when to wake up, eat and sleep in a cycle—a series of activities that repeat themselves day after day{#blank#}2{#/blank#}

    In the study, researchers found that skin cells moved faster to repair wounds suffered during the day. Their findings were published in the journal Science Transnational Medicine.

    The researchers examined cells, mice, and burn injury databases{#blank#}3{#/blank#}Night-time burns—burns suffered between 8 o'clock at night and 8 o' clock the next morning—were 95percent healed after an average of 28 days.

    But after an average of 17 days, daytime burns-burns suffered between 8 o'clock in the morning and 8 o'clock at night—were 95 percent healed{#blank#}4{#/blank#}

    Wounds are very costly to treat{#blank#}5{#/blank#}In Britain's National Health Services, for example, such services cost around $6.56 billion per year. Experts say the high costs result, in part, from a lack of drugs that speed up the closure of wounds.

A. Each cycle lasts about 24 hours.

B. The circadian rhythm is like a clock or timer.

C. Specifically their investigation found the following information:

D. The new study's findings could help scientists develop better drugs.

E. In other words, nigh-time injuries took an average of 11days longer to heal

F. Worldwide, billions of dollars are spent every year on wound-treatment services.

G. That's what a group of researchers from a university in Canada recently published.

    Not everyone deals with their feelings as an open book for others to read{#blank#}1{#/blank#}Learn to open up in order to improve your mental health.

{#blank#}2{#/blank#}Accept this and move on. Give yourself some time to have sweaty palms or a shaky voice, since it will get better with practice.

    Ask people open-ended questions. To begin practicing opening up, you need to engage in honest, open conversation. Try a question like, "How are things going at work?" instead of "How's it going?" to get an open answer. Then, in turn answer open-ended questions with honest answers, instead of "Fine" or "OK". {#blank#}3{#/blank#}However, in most cases people are flattered that you are listening to them and interested in their life.

    Try emulating（效仿）someone who is very open. Observe them in a social situation. Then, try to act as if you are them occasionally. Many open behaviors are learned, and not a natural part of personality.{#blank#}4{#/blank#}

    Avoid being a "know it all". Some people think advice is opening up, but it is unlikely to help you more open. When you want to give advice, listen and try to learn something new from the situation.

    {#blank#}5{#/blank#}Schedule at least one long conversation per week. In the conversation you tell someone about the emotional and difficult part of your life. Get into the practice of opening up about what's good and bad in your life.

A. In this case, practice can make perfect.

B. Call close friends and family members more often.

C. Asking people personal questions is not always proper.

D. Try connecting about hobbies, interests, vacations or books.

E. Listening patiently is a great way to overcome fear of sharing emotions in public.

F. Understand that there is usually some fear with opening up to other people.

G. However, closing yourself from new people can stop your personal growth.

How to Get Rid of a Cold Naturally Fast

    Although a cold usually goes away on its own within 4-7 days, you can ease your symptoms to feel better faster. You can get rid of a cold both naturally and fast by clearing your nasal passages with non-medical options. {#blank#}1{#/blank#}. However, if you experience symptoms like shortness of breath, wheezing or fever or your symptoms don't improve, see your doctor immediately.

    ①Clear Your Nasal Passages

    Blow your nose correctly. While it's important to blow your nose while you have a cold, don't blow too explosively. The pressure from blowing hard can impact your ears, giving you an earache on top of your cold. Be sure to blow gently, and only as often as necessary. {#blank#}2{#/blank#}.

    ②Help Your Body Feel Better Faster

    Drinking plenty of warm fluids makes you feel better faster and relieves cold symptoms such as a runny nose, cough, sneezing, and sore throat.

    Consume vitamin C, which can help strengthen your immune system. Citrus fruits, red and green peppers, kiwifruit, spinach, and other raw fruits and vegetables are good sources of vitamin C.

    {#blank#}3{#/blank#}. Try to take plenty of naps during the day, since having a cold can make you feel run—down and you need to keep up your strength.

    ③{#blank#}4{#/blank#}

    See your doctor immediately if you have shortness of breath or wheezing. Any time you're having trouble breathing, it's an emergency situation.

    Visit your doctor for a fever above 101.3℉ (38.5℃) or lasting 5 days. {#blank#}5{#/blank#}. Babies under the age of 12 weeks need medical care for a fever of 100.4℉ (38.0℃) or greater.

    If your symptoms don't seem to be going away in 7 days, then your infection could be worsening. It's best to see your doctor to make sure you're getting the proper treatment.