Eyesight（视力） plays a very important role in our daily life. Every waking moment, the eyes are working to see the world around us. Over forty percent of Americans worry about losing eyesight, but it's easy to include steps into our daily life to ensure healthy eyes. Here are five suggestions for a lifetime of healthy eyesight：

    Schedule（安排）yearly exams(检查). {#blank#}1{#/blank#} Experts advise parents to bring babies 6 to 12 months of age to the doctor for a careful check. The good news is that millions of children now can have yearly eye exams and following treatment, including eyeglasses.

    Protect against UV rays (紫外线). Long－term stay in the sun creates risk to your eyes. No matter what the season is, it's extremely important to wear sunglasses. {#blank#}2{#/blank#}

    Give your eyes a break. Two－thirds of Americans spend up to seven hours a day using computers or other digital products. {#blank#}3{#/blank#} Experts recommend that people practice the 20/20/20 rule: every 20 minutes, take a 20－second break and look at something 20 feet away.

    {#blank#}4{#/blank#} As part of a healthy diet, eat more fruits and vegetables each day. Vitamins (维生素) C and E help protect eyesight and promote eye health.

    Practice safe wear and care of contact lenses (隐形眼镜). Many Americans use contact lenses to improve their eyesight. While some follow the medical guidance for wearing contact lenses, many are breaking the rules and putting their eyesight at risk. {#blank#}5{#/blank#} Otherwise, you may have problems such as red eyes, pain in the eyes, or a more serious condition.

A．Eat your greens.

B．Eye care should begin early in life.

C．They can properly protect your eyes.

D．Stay in good shape by taking more vitamins.

E．Parents usually don't care about their own eyesight.

F．Always follow the doctor's advice for appropriate（适当的）wear.

G. This frequent eye activity increases the risk for eye tiredness.

    After entering high school, you must wonder how to study well. Here are some good skills for you.

    Go to class. If you want to do well at school, going to class is the first step in studying well. If you miss classes, you will miss what the teacher thinks is important; as a result, you'll miss what is the most likely to end up on the test.{#blank#}1{#/blank#}

    Take good notes. Try not to write down everything.{#blank#}2{#/blank#}Write down unfamiliar terms. After class, review your notes as soon as possible. You can fill in details that you missed and review the material while it is still fresh on your mind.{#blank#}3{#/blank#}If you are struggling in class, talk to your teacher. He or she may be able to give you more help before or after class. Most teachers have little sympathy(同情) for students who just become worried about failing during the last few weeks of the grading period.

    Take part in class discussions.{#blank#}4{#/blank#}Asking questions and having eye contact with your teachers and classmates can increase your participation(参与) and your focus during the class discussion. If the material is difficult, you'd better read it before class. This helps you make your point clear in class.

Form study groups. Get students together who want to do well in class. Make sure that everyone is familiar with the material because you do not want to spend time re-teaching material to people who do not understand it.{#blank#}5{#/blank#}Sometimes group sessions(上课时间) can become chatting sessions.

A. But be careful!

B. Don't be late for your class.

C. Talk to your teacher if you need help.

D. You should write down all the new terms.

E. So if you want to study well, go to every class.

F. All you need is to put down the main points in your own words.

G. In order to learn more in class, it is helpful to take part in class discussions.

    Your telephone is running low on power while you are waiting to fly out of an airport.

    Then you discover a public USB charging area close by.{#blank#}1{#/blank#}Then you take a deep breath and sit back, happy to get the power for free.

What could go wrong? Plenty.

    In addition to providing an electrical current, phone charging cords can send and receive data. That free USB charging hub at an airport, hotel or any other public place may not only charge your phone.{#blank#}2{#/blank#}The USB charging hub could be connecting to your phone and copying your contact list, email and text messages, voice mail, photographs and videos. It can also copy passwords, banking information and any other information stored on your phone.

    If you want to charge your phone while traveling, you have other choices that do not increase your risks.

    Connect your phone only to electrical outlets so data transfer is not possible.{#blank#}3{#/blank#} It is better to use a distant wall outlet than a nearby USB charging hub.

    Carry an extra, fully-charged battery. Having one means you can charge your phone without having to worry about carrying a special cord or finding a power outlet.{#blank#}4{#/blank#}

    If you must use a public USB charging center, be sure to turn off your phone completely.

    {#blank#}5{#/blank#}But it will reduce the chances of it happening, depending on what phone you have.

A. Remember to fully charge your phone before you leave home or work.

B It also could be transferring information to and from the device.

C. The public USB charging hub may even download programs to your phone.

D This may or may not prevent data transfer.

E. You can charge your phone with the extra battery wherever you are.

F. An available outlet may not be as near as a USB charging hub, but the few extra steps may keep you safe.

G. You quickly reach for a charge cord and connect your phone to the charging hub.

    Rivers play an important role on the earth, and we can't imagine what the earth would be like without rivers. {#blank#}1{#/blank#}

    With a length of 6, 650 kilometers, the Nile is the longest river in the world. The Nile River has been the source of human civilization since ancient times. The Nile has two main branches—the White Nile and the Blue Nile. The White Nile starts from the Great Lakes region of East and Central Africa through Lake Victoria.{#blank#}2{#/blank#} The Blue Nile carries with it a lot of fertile soil which turns out to be very important to farming in Egypt.

    The Amazon River is the world's largest river with a width of about 40 kilometers during the rainy seasons but about 10 kilometers wide when it is not flooded. The Amazon River has such a big water volume that it accounts for(占.....比例) more than 20% of all the world's fresh water—far more than any other river. {#blank#}3{#/blank#}The main Amazon River flows mostly through Brazil and Peru but its tributaries can also be found in many other countries.

    {#blank#}4{#/blank#}It has a depth of about 250 meters. Its length is 4, 700 kilometers. The sources of the Congo River are in the highlands and mountains in the Eastern Africa Rift Valley. It's the second largest river in terms of water volume. {#blank#}5{#/blank#}The Congo River basin(盆地) is the catchments(流域，集水区) area of the Congo River. It lies in both north and south of the Equator, making its flow very stable as there are always some tributaries experiencing a rainy season at any time.

A. Some of them are worth mentioning.

B. The Congo River is the world's deepest river.

C. Do you know which is the deepest river in the world?

D. The Blue Nile originates from(发源于)Lake Tana in Ethiopia.

E. Without rivers, there would be no living life in and along them.

F. And it flows through the second largest rain-forests in the world.

G. Streams that begin in the Andes Mountains are its sources.

    It's great fun with your favorite four-legged friend outdoors. But unfortunately for humans and pets alike, spending an abundance of time outdoors can have a troublesome downside: tick (扁虱) bites. "Tick season" actually takes up most of the year. {#blank#}1{#/blank#} The following safety tips may help you protect your pet from harmful tick bites.

    Lessen Your Pets Exposure to Ticks

    {#blank#}2{#/blank#} Usually they are particularly fond of tall grasses and brush. If possible, clear your yard regularly to create a safer environment for your pet to play in. If you think that your pet may be exposed to ticks, speak to your vet to discuss safe, effective products that may be able to prevent the attachment of ticks.

    Check Your Pet for Signs of Ticks

    Check your pet for ticks daily, especially if he or she has been playing outside or in a wooded or grassy area.{#blank#}3{#/blank#} Run your hands along your pets body, feeling for small bumps (肿块) and looking for dark spots. Ticks can be black, brown, and can range in size.

    Know How to Safely Remove a Tick from Your Pet

    Removing a tick from your pet can be a terrible task, but it's important to act quickly if you find evidence of a tick on it, as diseases can be spread from the creatures within a few short hours. {#blank#}4{#/blank#} Among them using the tick remover is the most commonly used one.

    {#blank#}5{#/blank#}

    A single bite from a disease-carrying tick can spread disease to your unsuspecting pet. Symptoms of diseases include fever, loss of appetite and reduced energy. If your pet shows any of these signs, seek veterinary (兽医的) help as soon as possible.

A. Know the Symptoms

B. Ticks can live in all types of environments.

C. Wash away the ticks you've removed in the toilet

D. Areas to check include most parts of the body.

E. And summer months tend to see an increase in bites.

F. After removing a tick from your pet, always clean the wound.

G. There are varieties of removal methods that can be found online.

Top 3 Self-Discipline Techniques

    Self-discipline is the key to leading a healthier, happier and more successful life,{#blank#}1{#/blank#}. We have shared some self-discipline techniques below. Follow these self-discipline techniques to start living a better life.

    ⑴Start small

    The journey of a thousand miles starts with a single step as the proverb goes.{#blank#}2{#/blank#}. Instead, stamina (耐力) is built up by doing a little more than the previous day's target.

    The same goes for discipline. Start by trying to carry out self-discipline techniques little by little every day for big results. Increase your goals over time.

    ⑵{#blank#}3{#/blank#} 

    Staying self-disciplined requires motivation. It can be hard to stay motivated if you feel like you haven't made any progress so far. Tracking progress makes you aware of how much you've done and encourages you to keep going.

    ⑶Exercise your willpower

    {#blank#}4{#/blank#}. Some days, sticking to the task is going to be difficult but by reminding yourself of the end in mind and how much the goal means to you, you will be able to ignore temporary temptations for long term gain.

    The above-mentioned self-discipline techniques have been proven to be extremely effective.

    {#blank#}5{#/blank#}, and it is the key to living a happy and fulfilling life.

A. Build a support system

B. Measure your goals

C. Willpower and self-discipline go hand in hand

D. Self-discipline is a feature found in many successful people

E. Self-discipline is linked to effective time management

F. However, it is easier said than done

G. You don't train for a marathon by running 10 kilometers on the first day