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.

    How to keep a travel journal

    Are you looking for fresh travel journal writing ideas? Read on these tips to get some ideas for creating a journal you will cherish.

    Just do it. A travel journal is not scholarly (学文精深的).{#blank#}1{#/blank#}There are no rules, and no one is grading what you are write. The best way to get going is to get started.

    Pay attention. Your journal doesn't have to only be about where you go each day.{#blank#}2{#/blank#}Did you meet someone new? Where and when? What did you talk about? Recording observations will make your travel journal colorful?

    Try to write something every day. Make a habit of writing something every day or at least every other day.{#blank#}3{#/blank#}If you let more time pass, it can be different to remember what you did three or four days ago, especially the brief impressions of those experiences. Your journal will be richer if you keep up with it.

    {#blank#}4{#/blank#}If writing paragraphs doesn't fit either you or your trip, try something else. You can make lists, such as your favorite restaurants for dinner or the best places to watch the sunset. Try sketching(素描)too and don't be discouraged if you are not sure as an artist. Sometimes sketching is really the best way to record an experience that would be lost when described with text. As the saying goes, a picture is worth one thousand words.

    Take the bad along with the good. For all the great travel experiences we enjoy, there are days when things go wrong.{#blank#}5{#/blank#}Though they are not be highlight of a trip, they are part of your unique travel story and often are as much fun to tell about in the future as the ones that go as planned.

A. Write at a comfortable place.

B. Use different ways to keep a journal

C. Be sure that the size of the notebook is right for you.

D. Then you can catch your thoughts while they are fresh.

E. It is your experiences—written by you, and for yourself.

F. Write about these experiences too for they are just as memorable

G. Stop for a moment, look around and ask yourself some questions.

    Perhaps you've heard the old saying “curiosity killed the cat.” It's a phrase that's often used to warn people—especially children—not to ask too many questions. {#blank#}1{#/blank#}In fact, research has shown that curiosity is just as important as intelligence in determining how well students do in school.

    Curiosity can also lead us to make unexpected discoveries, bring excitement into our lives, and open up new possibilities. {#blank#}2{#/blank#}For example, one day in 1831, Michael Faraday was playing around with a coil(线圈) and a magnet(磁铁) when he suddenly saw how he could produce an electrical current. At first, it wasn't clear what use this would have, but it actually made electricity available for use in technology, and so changed the world.

    {#blank#}3{#/blank#}On one level, this is because technology has become so advanced that many of us are unable to think too deeply about how exactly things work anymore. While it may be possible for a curious teenager to take a toaster apart and get some sense of how it works, how much do you understand about what happens when you type a website address into a browser? Where does your grasp of technology end and the magic begin for you?

    In addition to this, there's the fact that we all now connect so deeply with technology, particularly with our phones. The more we stare at our screens, the less we talk to other people directly. {#blank#}4{#/blank#}Then we feel we know enough about a person not to need to engage further with them.

    The final—and perhaps most worrying—way in which technology stops us from asking more has to do with algorithms, the processes followed by computers. As we increasingly get our news via social media, algorithms find out what we like and push more of the same back to us. {#blank#}5{#/blank#}Perhaps the real key to developing curiosity in the 21st century, then, is to rely less on the tech tools of our age.

A. It is still not known why learning gives us such pleasure.

B. We are always encouraged to challenge our pre-existing beliefs.

C. Yet it's widely agreed that curiosity actually makes learning more effective.

D. All too often we accept the images of people that social media provides us with.

E. However, curiosity is currently under the biggest threat, coming from technology.

F. In science, basic curiosity-driven research can have unexpected important benefits.

G. That means we end up inside our own little bubbles, no longer coming across new ideas.

    HSC, mid-terms, finals, no matter how you describe them, exams have something in common—including how to study well. {#blank#}1{#/blank#}

    Plan a study timetable

    Make sure you will cover your material in time with a realistic study timetable. {#blank#}2{#/blank#}. With a plan in place, you'll be less likely to put off your work as knowing how you will use your time will also mean you make best use of it.

    {#blank#}3{#/blank#}

    Give yourself the best environment by choosing somewhere with enough light, a comfortable chair, and little to no distractions. Sit down with all that you need — and only the things you'll need — like any books, notes or pens, as well as some water and healthy snacks on hand. Also ask what you don't need. A rule of thumb is if it doesn't help you study, it shouldn't be on your desk. It may look so simple but is really effective to help you focus on your study.

    Keep healthy: sleep, eat and move

    When exams come around somehow there never seems enough time for the basic things like sleep and exercise. Taking care of your health and wellbeing will really help you study at your best by improving your memory, mood and energy levels, and keeping those stress levels down. {#blank#}4{#/blank#}. Eating three meals and sticking to healthy snacks throughout the day will give you the energy you need to focus. {#blank#}5{#/blank#} A good aim is 20-30 minutes of exercise but even a walk nearby during study breaks will do you good!

    Choose your food wisely and you can add years to your life. Our list of anti-aging food goes way beyond green tea! {#blank#}1{#/blank#}, it doesn't matter how you eat your green and yellow beans, as long as you eat them. Eating whole, cooked peas and other beans may actually slow aging and make skin look younger.

    {#blank#}2{#/blank#}, it may be one of the best thing you can do for your health. People who eat these anti-aging foods, especially walnut (核桃), three times a week or more enjoy two to three more years of life.

    Don't panic — no one is saying you have to give up your steak — but doing a few meatless meals a week can increase the number of weeks in your life. {#blank#}3{#/blank#}. Anti-aging foods like rice, beans, tofu, and buckwheat nearly as much protein per serving as meat does, and you get the added benefit of fiber, vitamins, and minerals.

    Carrots are the typical healthy food. {#blank#}4{#/blank#}. But did you know that carrots can not only lengthen your life span but also help you look younger?

    Not only are blueberries delicious, but they're also full of tons of nutrients, namely Vitamins A and C, as well as anti-aging antioxidants (抗氧化物质)like anthocyanin (花青素). A higher intake of anthocyanin may be associated with reductions in age-related decline to help preserve your health as you get older. The antioxidants found in blueberries can also protect against oxidative damage to your cells.{#blank#}5{#/blank#}.

A. Since they are delicious

B. When it comes to anti-aging foods

C. If you eat nuts in your diet regularly

D. Sometimes your health depends on your mouth

E. And they decrease the risk of heart disease, and other diseases

F. Adding plant sources of protein can help extend your life span

G. Therefore, it's probably no surprise to hear they're really good for you.

    Many people think of guys as being carefree when it comes to their appearance. But in fact, a lot of guys spend plenty of time in front of the mirror. They care just as much as girls do about their body image.

    Body image is a person's opinions and feelings about his or her own body and physical appearance. {#blank#}1{#/blank#} You appreciate your body for its capabilities and accept its imperfections.

    {#blank#}2{#/blank#} Here are some ideas.

    Recognize your strengths.

    Different body types are good for different things. What does your body do well? Maybe your speed, strength, or coordination (协调) makes you better than others at a certain sport. That may be basketball, table tennis, mountain biking, dancing, or even running. Or perhaps you have non-sports skills, like drawing, painting, singing, playing a musical instrument, writing, or acting, {#blank#}3{#/blank#}

    Exercise regularly.

    Exercise can help you look well and feel good about yourself Good physiques (体形) don't just happen. {#blank#}4{#/blank#} A healthy habit can be as simple as exercising 20 minutes to 1 hour three days a week Working out can also lift your spirits.

    Respect your body!

    Practicing good habits—showering regularly; taking care of your teeth, hair, and skin; wearing clean clothes, and so on can help you build a positive body image.

    {#blank#}5{#/blank#}

    Your body is just one part of who you are. Your talent for comedy a quick wit (智慧), and all the other things make you unique. So try not to let small imperfections take over.