Eyesight 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 yearly exams. {#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). Long­term 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#}

    {#blank#}3{#/blank#} Two thirds of Americans spend up to seven hours a day using computers or other digital products. This frequent eye activity increases the risk for eye tiredness. Experts recommend that people practice the 20/20/20 rule: every 20 minutes, take a 20­second 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 advice 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．Give your eyes a break.

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

C．They can properly protect your eyes.学￥科￥网...

D．Stay in good shape by taking more vitamins.

E．Have your eyes checked as early as possible.

F．Always follow the doctor's advice for appropriate wear.

G．Eat your greens.

Best Way to Save Money

    Although the best way to save money can vary from person to person, depending on age, family size and other characteristics, there are still some easy things that all shoppers can do to keep more money in their bank accounts.

    Avoid impulse (冲动的) purchases.

    When you shop, a best way to save money is to have a plan in mind to help you avoid impulse purchases. {#blank#}1{#/blank#} And you only carry the exact amount of cash that you will need for your planned purchase. Some shoppers agree to discuss any purchases over a certain dollar amount with their spouses (配偶) first.

    {#blank#}2{#/blank#}

    Sometimes the best way to save money in the long term is to spend a little more money right now. {#blank#}3{#/blank#} A high-quality pair of shoes will last longer than a bargain pair and prevent foot pain. Leaner (瘦的) cuts of meat and organic produce provide health benefits for your family.

    Buy secondhand.

    Check classified ads, thrift stores and garage sales for used clothing, toys, furniture, and much more available at a part of their original cost. {#blank#}4{#/blank#} And there members offer unwanted items for free to anyone willing to pick them up.

    Borrow instead of buy.

    If you're only going to use something once, try to borrow it instead of spending your money on it. Borrow a tool from your neighbor. {#blank#}5{#/blank#} Check out the resources at your local library. You'll also be reducing disorder in your home.

A. Make things by yourself.

B. Exchange books with a friend.

C. Know when to pay for quality.

D. Refuse to buy things you can't use.

E. For instance, you might leave your credit cards at home.

F. A good piece of furniture can stay in the family for decades.

G. For the most secondhand savings, check out groups like Freecycle.

Getting the Cheapest Flights

    After interviewing 10 travel agents in the area, we've compiled (汇编) the very best tips for finding the cheapest flights.

    Book your flight 21 days before you want to fly. Booking a flight is like playing a game of chicken. Airlines want to get the most money possible for their tickets and have difficult computer programs that adjust their prices automatically. Booking too early, you might miss out on some major deals. {#blank#}1{#/blank#}The best advice is to book your flight 21 days before your planned departure date to get the best deals.

{#blank#}2{#/blank#}Most airlines update their reservation systems on Tuesday at 7 p.m. GMT. People tend to buy their tickets on weekends, so airlines make changes on one of the slowest days of the week—Tuesday.

    Fly on Tuesday or Wednesday. Tuesday and Wednesday are the least busy days at airports, and are also the cheapest days to fly. {#blank#}3{#/blank#}Friday and Sunday are the peak flying days of the week, and are the worst, and most expensive days to fly.

    Book early for international flights. {#blank#}4{#/blank#}You can also try flying into smaller airports, which sometimes have better deals.

    Eat your cookies（网络标记)． Delete your Internet browser cookies if you've visited an airline site within the last 30 days. {#blank#}5{#/blank#}

    Compare prices. Use travel search engines, in addition to airline websites, to make sure you're getting the best deal possible.

A. Collect it one day ahead.

B. Tuesday is the best day of the week.

C. Pay in cash when you receive your ticket.

D. Booking too late, you might be shocked to see prices skyrocket.

E. The best deals for international flying are found 11-12 weeks in advance.

F. As an added bonus, you'll also have less people to deal with at the airport.

G. It's been discovered that some airlines will raise prices for previous visitors to their websites.

    Do you want to be at the top of your class？Add these tips to your life and you should be on your way to being a top student！

    {#blank#}1{#/blank#} I cannot stress(强调)enough how important it is to pay attention to what your teacher is teaching you. Take part in class discussions if you have something worthwhile to add. Pay attention during class, especially during lectures.

    Taking notes is important. You don't need to write down every word your teacher says but write down what he writes on the board, or any special fact you think you might need for a test. {#blank#}2{#/blank#} This way it will help you learn more effectively by actually thinking about what you are writing.

    Don't skip school(逃学). You will be missing out on stuff. {#blank#}3{#/blank#} However, you will have more work because you have missed lectures. Also, try not to be late for class. It's most likely that your teacher won't appreciate it and you will get yourself behind.

    {#blank#}4{#/blank#} If you have an "I don't care about school or this class" attitude, then teachers will be less willing to offer you extra credit(学分). The same goes for lazy attitude. Have a respectful attitude to the teacher and other students. Try not to laugh when other students make a mistake.

    Always ask questions. {#blank#}5{#/blank#} If you don't understand, ask someone. Read your textbook and notes, and then if that fails, seek help. Ask a teacher, friend, classmate, parent, etc. Get a tutor if you need one.

A. Be prepared.

B. Write in your own words.

C. Staying organised will be helpful.

D. Keep a good attitude toward things.

E. There is no shame in needing some help.

F. I t is true that you could make up the work.

G. Pay attention to everything the teacher says.

Customs on either side of the Atlantic

    We all know that Britain and the US are two countries connected by a common language. But in fact, {#blank#}1{#/blank#} as BBC did in a recent story called 8 Situations When Britons Behave Differently From Americans. Below Teens has picked out four for you. Take a look.

    When someone knocks into you.

    If someone bumps into an American, the victim will most likely look the accidental aggressor in the face and expect an apology. If however, {#blank#}2{#/blank#} chances are that the victim will say "sorry" before the other can make his or her own apology.

    {#blank#}3{#/blank#}.

    Britons don't all change into evening dress for supper like what you may have seen in popular TV shows like Downton Abbey. But they do tend to make an effort when going out for dinner somewhere nice. Americans, however, will probably wear a casual shirt to a fancy eatery.

    When you drift finish your food.

    When dining out at a restaurant, {#blank#}4{#/blank#}. They think the food is somehow "tainted" once they've poked at it with a knife and fork. In the US, wrapping it up to take home is a standard practice.

    When you get into a taxi.

    Britons will give the cab driver an address, then assume that's it for the interaction until it's time to pay. Even if they're being taken in a roundabout way, {#blank#}5{#/blank#}. In the US, however, most passengers think nothing of telling the driver what route to take after telling him or her the destination.

A. When you get dressed for dinner

B. When you go out with your friends

C. the differences are more fun to observe

D. they're very unlikely to say anything

E. the victim happens to be British

F. Britons wouldn't think to take the leftovers home

G. they will point it out immediately and politely

Every animal sleeps, but the reason for this has remained foggy. When lab rats are not allowed to sleep, they die within a month. {#blank#}1{#/blank#}

One idea is that sleep helps us strengthen new memories. {#blank#}2{#/blank#} We know that, while awake, fresh memories are recorded by reinforcing (加强) connections between brain cells, but the memory processes that take place while we sleep have been unclear.

Support is growing for a theory that sleep evolved so that connections between neurons(神经元) in the brain can be weakened overnight, making room for fresh memories to form the next day. {#blank#}3{#/blank#}

Now we have the most direct evidence yet that he is right. {#blank#}4{#/blank#}The synapses in the mice taken at the end of a period of sleep were 18 per cent smaller than those taken before sleep, showing that the connections between neurons weaken while sleeping.

If Tononi's theory is right, it would explain why, when we miss a night's, we find it harder the next day to concentrate and learn new information — our brains may have smaller room for new experiences.

Their research also suggests how we may build lasting memories over time even though the synapses become thinner. The team discovered that some synapses seem to be protected and stayed the same size. {#blank#}5{#/blank#}"You keep what matters," Tononi says.

A. We should also try to sleep well the night before.

B. It's as if the brain is preserving its most important memories.

C. Similarly, when people go for a few days without sleeping, they get sick.

D. The processes take place to stop our brains becoming loaded with memories.

E. That's why students do better in tests if they get a chance to sleep after learning.

F. "Sleep is the price we pay for learning," says Giulio Tononi, who developed the idea.

G. Tononi's team measured the size of these connections, or synapses, in the brains of 12 mice.