Natural sites and historic buildings,when left alone,can slowly be in bad condition.{#blank#}1{#/blank#}For these reasons we must protect them.

    “World Heritage" is the title given to places chosen from natural sites and buildings around the world. These places are considered special,valuable and require protection. They may be places of nature or cultural heritages that are the pride of the people in the country{#blank#}2{#/blank#} Each is a treasure of our planet that must be protected for us and our future generations.

    Even extremely beautiful natural environments can be in bad condition if they are left alone{#blank#}3{#/blank#}For instance,the Galapagos Islands are now protected by rules that stop people from bringing or removing plants and animals to or from the islands, moving rocks and touching the animals. In the US,people are not allowed to visit Grand Canyon National Park by vehicle. It aims to protect the park's environment from the gas produced by cars{#blank#}4{#/blank#} Australia is making stricter laws to prevent agricultural chemicals from flowing into the ocean near the Great Barrier Reef. Efforts are also being made to protect Natural Heritage sites in Japan. In Shiretoko,only a small number of people are allowed to walk on its nature path at the same time{#blank#}5{#/blank#}

A. They may also be home to endangered species（物种）．

B. Today there are 183 Natural Heritage sites around the world.

C. People can change these places too,just as the wind and rain can.

D. Natural Heritage is valued for geographical characteristics and beautiful scenery.

E. That's why measures are being taken around the world to protect them.

F. It can reduce the risk of people accidentally stepping on valuable plants.

G. There are even security guards there who can arrest people that break the rules.

    Sleep and Teens--Biology and Behavior

    How much sleep do teens need? And how much sleep are they realistically getting? Based on current data, most teens need about 9-plus hours to have the best or most suitable sleep night{#blank#}1{#/blank#}

    Many factors combine to decrease sleep in adolescents. We can think in general of two major factors: biological, the brain processes that regulate the amount and timing of sleep, and behavior, all the psychological, parental, societal, cultural features of teen's life.

    {#blank#}2{#/blank#}These changes lay the ground work for the biological night to occur later during the teen years than before. Circadian Rhythms (daily biological clock) seems to slow down as young people progress through the middle school years. At the same time, the sleep pressure system appears to change in a way that makes it easier to stay awake longer, though without changing the amount of sleep that is needed.

    Moreover, many teens have a "technological playground" in their bedrooms: television, computer with 24/7 Internet access, telephones, electronic game stations, MP3 players, and so forth. These technologies provide instant and constant contact with peers. Societal and media pressure to consume these technologies is now higher than ever. Yet society also requires that teens go to school at a time of day that is at odds with their biological and social lives. So we see teens turn to caffeine, late-night Internet and cramming in activity after activity as a means to keep awake.{#blank#}3{#/blank#}

    Problems emerge for lack of sleep{#blank#}4{#/blank#}For some, grades begin to suffer as they struggle to keep awake during class and while doing homework. And others may simply feel moody, never knowing how to feel or do their best. Worse still, many teens suffer from both physical and mental illness.

    {#blank#}5{#/blank#}The earlier teens can start this good sleep habit, the easier it will be for them to stay healthy, happy and smart.

A. Sleep experts recommend teens keep consistent sleep and wake schedule

B. Teens may schedule sleep like any other daily activity and make sleep a priority

C. Then they are trapped into a terrible situation where they would never get enough sleep

D. The sleep-wake bio-regulatory factors appear to change significantly during adolescence

E. Some teenagers struggle to wake up in the morning, often resulting in late or missed school

F. Teens may be driven to things that can wake them up because they'll fall asleep if they do not

G. However, it is indicated that most teens fall short of this goal, many by a considerable amount.

    It is important for everyone to learn how to apologize effectively. You might think a simple “I'm sorry.” will take care of everything.{#blank#}1{#/blank#} There are some situations in which you need to apologize properly.

    Apologize truly.

    Apologizing through a half-hearted “sorry” will get you nowhere.{#blank#}2{#/blank#}. If you are really want to apologize, you must do it truly. Accept the fact that you are wrong.{#blank#}3{#/blank#} Contrary to what you might think, apologizing over and over again isn't going to help, especially you are apologizing to someone who is your boss.

    Don't wait too long to apologize.

    One piece of advice on how to apologize effectively is to do it as soon as you realize your mistake. Some people put off giving an apology because they think it will save them from the offended(被冒犯的) person's anger. However, that's just not polite. If you can't approach the person personally at once, send him or her a message first.{#blank#}4{#/blank#}

    Don't expect too much.

    You can't expect that person to forgive you immediately. If you are going to apologize, you have to be prepared for the worst. The conversation isn't going to be the most comfortable one either.{#blank#}5{#/blank#}

    Learning how to apologize effectively is very important. It shows people that you are a very kind person.

A．Don't apologize again and again.

B．However, that's not exactly true.

C．Pay a visit to others ahead of time.

D．You'd better prepare yourself for anything.

E．But make sure you make an apology in person as well.

F．In fact, it might get you into even bigger trouble than before.

G．A lot of people don't know how to make an apology to their boss.

    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.

    I didn't just read a book in print, on an e-reader or even on a mobile phone. Instead, I read a book on dozens of devices. I was not trying to set a Guinness World Record. I wanted to answer a question I often hear: {#blank#}1{#/blank#}? So I set out to try them all, reading a chapter on each: the Amazon Kindle, the first and second generation Apple iPads and mobile phones. To be fair, I also read a chapter in that old-fashioned; form—a print book.

    The book I chose was The Alienist. For the first chapter, I turned to an Amazon Kindle. {#blank#}2{#/blank#}. The kinder is light. Its six-inch screen is the perfect size for reading, and reading on its black-and-white-E-Ink display doesn't harm your eyes. {#blank#}3{#/blank#}, and on average you charge the device only once a month. My only complaint with the Kindle design was the placement of the keyboard at the bottom of the device.

    Despite the small screen on a mobile phone, I found reading on one to be simple and satisfactory. {#blank#}4{#/blank#}, but all of the phones on which I read chapters felt somewhat similar.

    If I had wanted to, I could have bought my book through dozens of e-book apps in the Apple App Store. Most are free and offer access to thousands of free e-books or paid versions. Both iPads 1&2 offer an immersive(身临其境的)reading experience. I found myself jumping back and forth between my book and the web, looking up old facts and pictures of New York City. {#blank#}5{#/blank#}.

    For the last chapters of the book, I read the print one, which is still my favourite choice.

    Since we are comparing devices. So I guess I need to choose one. In the end it might come down to Kindle. But if money is tight, go for print. My used print book cost only $4 from Amazon.

A. Battery life is outstanding

B. Which e-reader is the best for reading books

C. Shopping on Amazon for the Kindle is simple

D. Should students make use of the devices to read

E. No wonder a lot of readers also speak highly of it

F. Reading on the Amazon Kindle is a joy in many aspects

G. The brightness and size of the mobile phone's screen did vary

    We automatically assume that as adults, we're wiser than when we were children. However, actually we can learn a lot from our childhood self. For example, we can learn to develop optimism about the future. Do you remember how excited you used to be just before Christmas? {#blank#}1{#/blank#} Reintroduce that childlike wonder into our daily experiences.

    We can learn to dream big and imagine the impossible. How often have you heard a child say something like “One day, I'm going to be an astronaut”? Our adult minds immediately laugh at this idea and think about all the logical reasons as to why this might never happen. {#blank#}2{#/blank#}We minimize our chances of attaining what we dream about. It is okay to dream big just as our childhood self did.

    {#blank#}3{#/blank#} Our childhood self looked at possibilities and believed we could achieve them successfully. If we wanted to build a tree house, we'd go about thinking about how to make it happen instead of focusing on all the reasons it might not happen. In this way we can fill our life with possibilities rather than regrets.

    We can learn to be playful and silly sometimes, {#blank#}4{#/blank#} Children spend a large amount of time escaping from reality to mess about and have fun. Make time for your childhood self to come out and play. Run around the garden, wear a silly hat or spend time laughing. {#blank#}5{#/blank#}

A. Don't imagine things could go wrong.

B. We can learn to hold a “can do” attitude.

C. That feeling of great joy is hard to beat.

D. Most children tend to think in a positive way.

E. All of these activities can make us feel happy and alive.

F. We employ self-limiting beliefs without even realizing it.

G. All work and no play makes a person very dull and upset.