The days when a cellphone was used for nothing beyond calling and texting are gone. Today, we turn smart phones into magical machines with apps that transform them into musical instruments or business machines or video players. But it turns out that we are only searching the surface. Who knew that smart phones would make pretty good satellites?{#blank#}1{#/blank#}

Smart phones forecast the weather

      Networking expert Open Signal has discovered something interesting: the sensors in Android phones designed to measure battery  temperature, light, pressure and 80 on can be used to generate surprisingly accurate weather reports. {#blank#}2{#/blank#}

Smart phones save the rainforests

       Detecting illegal logging(盗伐) may sound like a novel app, {#blank#}3{#/blank#}: in Indonesia, the non-profit organization Rainforest Connection' wants to use donated Android phones to detect illegal logging. As Newscientist reports, “The phonesare equipped with solar panels specifically designed to take advantage of the brief periods when light reaches the forest floor. Their microphones stay on at all time, and the software listens for the sound of a chainsaw(链锯).”

{#blank#}4{#/blank#}

        Researchers at the university of Illinois have developed an iPhones app that turns the phone into a fully featured mobile medical lab that uses the phone's camera to detect proteins, bacteria, viruses and other organisms.

Smart phones drive cars

        Google's self-driving cars carry around  $30,000 ofhigh-tech hardware and sensors, but students at Australia's Griffith University think they can get the job done with asingle smart phone.{#blank#}5{#/blank#}

A. but it's a serious business.

B. Here are someuses for smart phones the makers probably didn't imagine.

C. so it can beused to detect the sound of a chainsaw.

D. It has been used in many fields.

E. Get enough phones involved and you will have a weather sensing network.

F. Smart phones serve as mobile medical labs.

G. They have built a model that relies mainly on the phone's camera and built—in GPS.

    Do you have a hobby? Something you look forward to spending your time with? Something you love to do?{#blank#}1{#/blank#} Or making model airplanes. Sketching. Or making useful things out of waste material. It could be a musical instrument that you love playing. Or singing and dancing.

    There are many things that a hobby can give you, apart from an enjoyable time. Sashay was a shy boy but through his interest in model airplanes he learned the value of sticking to a task until it was finished. His model airplane club brought him to get into touch with similar souls.{#blank#}2{#/blank#}

    Having a hobby helps you relax and get away from the routines of school.{#blank#}3{#/blank#} You really need this well deserved one, too! It gives you focus, self dependence, confidence and builds your personality. This is an opportunity to lose yourself in an enjoyable activity, away from the pressure of school, so at the end of it, you feel relaxed and yet, mentally charged.

    Your hobby defines you.{#blank#}4{#/blank#}And it also shows you what you are good at, and how far you can go, when you apply yourself.

    So go ahead.{#blank#}5{#/blank#}.For a hobby is: Happiness: something which you look forward to doing. Opportunity: to nurture and develop your special and unique skills and celebrate them. Believe in yourself: makes you understand your strong advantages and improves your confidence. Best in you: brings out your best—for in each one of us there is a best that is only ours. YOU gives you a unique character, and makes you YOU!

A. Develop a hobby.

B. It gives you a break.

C. It proves your ability.

D. Hobbies show your character.

E. It showcases your special skills.

F. It could be collecting something.

G. He learned to make friends for the first time.

How to improve vocabulary fast

    Your vocabulary refers to the words in a language you are familiar with. We should learn some ways to expand it.

    Read every day.{#blank#}1{#/blank#}. Choose reading material that is slightly above your level and keep a dictionary with you to look up words you do not know.

    {#blank#}2{#/blank#}.If you do not meet with an unfamiliar word in your daily reading, use your dictionary to search for one.

    Learn the correct definition and pronunciation for each new word. Pronunciation is as important as definition because in order to add a word to your active vocabulary, you must be able to use it in speech.

    Elaborate (详尽阐述) on the meaning of the word. If you have just learned the word “stubborn”, think about the neighbour who will not lend you his car.{#blank#}3{#/blank#}.

    Use your new word in speech and in writing. E-mail your sister about how your cat is stubborn about sleeping on your pillow. {#blank#}4{#/blank#}.But the more you use it, the more fluent you will become in its use. Soon it will be a regular part of your active vocabulary.

    Tell everyone you are trying to increase your vocabulary. Encourage them to ask you what your latest word is.{#blank#}5{#/blank#}.

    The more you explain the meaning of a word to someone, the more likely you are to remember it.

A. Find a new word every day.

B. The vocabulary can be increased.

C. Your vocabulary contains the words you understand.

D. The more often you read, the faster your vocabulary can grow.

E. Or let them ask for the definition of a new word you have used.

F. Imagine him shaking his head, and think of him as 'stubborn in his refusal.”

G. The first time you use a new word in speech it may seem strange.

Five tips for safe running

    We all know that exercise is good for our health. But some kinds of exercise may be better than others. Running, for example, may help to protect against heart disease and other health problems.

    Running is good exercise, but it can be hard on the body. {#blank#}1{#/blank#}

    Take it easy. Do not run too much, too soon or too fast. Most people get running injuries when they push themselves too bad. The body needs time to get used to increases in distance or speed.{#blank#}2{#/blank#}

    Listen to your body. Most running injuries do not come unexpectedly. {#blank#}3{#/blank#} They may include body aches, sore muscles(肌肉酸痛) and pain that does not go away.

     {#blank#}4{#/blank#} There is no single best shoe for every runner. You should find the shoes that offer the best fit and support for your feet. More importantly, you should replace your shoes every 500 to 800 kilometers.

    Take good notes. Take time after each run to write down what you did and how you felt. Look for patterns, things that happen over and over again. These notes will help you find the best exercise for you.

    Cross train. As we said earlier, running is hard on your body. So physical fitness experts suggest some form of cross training to improve muscle balance and to help you stay injury free. They say swimming, yoga, and riding a bicycle are good exercises to combine with running. {#blank#}5{#/blank#}

A. Get good running shoes.

B. Usually, there are warning signs.

C. Running may also help you live longer.

D. These exercises are easier on the body.

E. Muscles and joints (关节) need time to recover.

F. As advertisements for the running shoes Nike say, “Just do it.”

G. Here are five ideas to reduce the risk of injury.

    Have you ever imagined the benefits that a good memory can bring to you? {#blank#}1{#/blank#} Here are four ways to improve your memory.

    {#blank#}2{#/blank#} There is evidence that sleep plays a vital role in the consolidation of memories relating to learning motor skills, such as learning to play a musical instrument or ride a bike. Having a full night's sleep soon after gaining a new skill helps consolidate the processes involved, so they can later be performed well.

    It's rewarding to continue education. Older people are often told to adopt a “use it or lose it” approach to maintaining cognitive (认知的) function. {#blank#}3{#/blank#} In a 2016 study, US researchers found participants aged 60-90 who spent 15 hours a week for three months learning a complex skill, such as digital photography, saw significant improvements in memory tests.

    Taking a break counts. {#blank#}4{#/blank#} More than a century ago, German scientists showed that people performed almost twice as well in memory tests if they took breaks.

It's useful to stay social. Having an active social life delays memory loss as we age, US scientists who asked people in their 50s and 60s to do memory tests every other year between 2001 and 2007 found the decline in recall abilities of their most sociable subjects to be half that of the least well connected. {#blank#}5{#/blank#}

A. Sleeping well helps strengthen memories.

B. Old people should participate in easy activities

C. Yoga, meditation or other relaxation techniques may help.

D. Memories can be destroyed if the brain doesn't have enough rests to sharpen them.

E. In fact, when it comes to memory, research suggests that only certain types of mental activities help.

F. Being able to remember important pieces of information can give you a powerful advantage in your life.

G. Having good friends, volunteering for charities and other forms of social engagement also protect memory.

Hope is the most powerful motivational force that helps people to overcome adversities. {#blank#}1{#/blank#}, you need a guiding force to keep you moving toward your goals. Hope keeps you on your feet and makes you much stronger. 

Hope is your strength and inner faith in the battle of your life. {#blank#}2{#/blank#}, you lose everything. You do hard work and make a great effort to succeed in life but fail. That makes you upset and depressed. You do not know what to do. At that time hope comes to your rescue and gives you encouragement. {#blank#}3{#/blank#}.

Hope increases the productivity, efficiency and creativity in people. A hopeful person who stays positive and enthusiastic can succeed in any field of his choice. {#blank#}4{#/blank#}. The best service we can do to people is giving hope to the hopeless. 

{#blank#}5{#/blank#}? Yes, hope gives meaning to life as without hope there is no reason to live. Give hope to people and they will become more creative and more productive. Hope is vital to the life of every person. Besides, hope is necessary not only for life but also for living a healthy life. Hope is the best medicine that keeps away miserable tension, depression, high blood pressure and other health problems. I had two big heart attacks and while at the edge of death, I had hope that I would survive. And the hope of getting well kept me alive.

A. A hopeless person is a failed person who can never succeed in life

B. Have you ever lost hope and felt sorry for yourself

C. Since you're full of hope for the future

D. You try one more time and succeed

E. In the ups and downs of life

F. Is hope necessary for life

G. If you lose hope