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#}

    Give your eyes a break. Two­thirds 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 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 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 wear.

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

阅读短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

    Human beings are the most intelligent of all animals because we are gifted with the ability to think and reason logically. Scientists and even common people with special intelligence have made a lot of inventions and contributions to modern lifestyle in the past. “Houses” have been the most popular area for discoveries and inventions in the past and even now.

    Many household items have been the result of inventions of people who desired better functioning of the existent products. Every individual has intelligence and if it is used properly for the right purpose it leads to invention of a new tool or device. Many new household inventions are made almost every day and there are specific companies, which particularly keep a record of all these inventions.

    A lot of inventions have been made recently in the household field. These products are patented(专利的) and have trade mark licenses. The patented sliding cinch is a very simple but effective method to prevent shoulder stress and injury for those who work before computers all day long. Vanity PC is a type of computer furniture that specifically hides all the computer wires and keeps a clean and good look. All the outdoor dust, mud and snow can be kept out of the house by installing(安装) the dirt drain(排水管) at the entrance of the door. Another important invention is the automatic toilet night-light, in which a small light starts when the lid of the toilet seat is opened and closes as soon as the lid is closed.

    These are some of the new household inventions invented mostly by common people. Thus, a variety of new household items are invented every day, which helps in a better functioning of household chores and in a more useful manner.

     Many of us feel uneasy when someone stands too close to us, talks to us too loudly or makes eye contact(接触) with us for too long. But have you ever wondered why those things make you uncomfortable?
      It's all about personal peace, which means not only an imaginary space around the body, but also the space around all the senses. People feel that their space is being violated(侵犯) when they meet with an unwelcome sound, smell or look. This is probably why a man on a crowded bus shouting into his mobile phone or a woman next to you putting on strong perfume(香水) makes you feel angry.

    Whether people have had a stronger wish to protect their personal space in recent times is hard to say. Yet studies of airlines show that people have a strong desire to have space to themselves. In a survey by Trip Advisor, a travel website, people said that if they had to pay more for some extra service, they would rather have larger seats than extra food.

    Although people may need their personal space, some hardly realize it. For example, people on a bus who hold newspapers in front of their faces to read in fact keep a distance from strangers.

    Go and watch a library table. You will notice that one of the corner seats will usually be taken first, because they are the farthest way. What if someone sits opposite to you? Maybe you will pile up books as if to make a wall.

    Preference for personal space is different from culture to culture. Scientists have found that Americans generally prefer more personal space than people from other cultures. In Latin cultures, however, people are more comfortable standing close to each other.

    What's fiercer than a lion? The honey badger (蜜獾), one of the toughest mammals in Africa and western Asia. Honey badgers stand less than a foot high. They are only a couple feet long. They weigh just over 20 pounds. Yet they have a reputation for toughness that is far greater than their size.

    So what makes the honey badger so tough? They have speed, but so do many animals. They aren't stronger than lions, so how do they stop them? The thing that sets the honey badge apart is their skin. Their skin is thick and tough. Arrows, spears, and bites from other animals can rarely go through it. Not only is their skin thick and tough, it is also loose. This allows them to twist and turn to fight back while another animal is attacking them.

    Honey badgers have long, sharp claws. These claws are good for attacking and even better for digging. Honey badgers are some of nature's most skilled diggers. They can dig a nine-foot tunnel into hard ground in about 10 minutes. They love to catch a meal by digging up the holes of frogs and snakes. They also use their digging skills to create their homes. They live in small holes in the ground and defend them fiercely.

    You don't get a reputation like the honey badger by running from danger. The honey badger is a fearless and tireless fighter. They will attack any creature that threatens them, man included. Because of the honey badger's reputation, most predators (食肉动物) avoid them. Some animals use the honey badger's reputation to their advantage. Adult cheetahs (猎豹) have spotted coats, but their kittens have silver manes (鬃毛) and look like honey badgers. Some scientists believe that their coloring tricks predators into avoiding them.

    You might be wondering: "If honey badgers are so tough, how did they get a name that makes them sound like a piece of candy?" The answer makes sense. Since honey badgers have such thick skin, bees rarely harm them. So honey badgers love to attack beehives(蜂窝). Honey badgers run after honey so aggressively that beekeepers in Africa have to use electric fencing to hold them back. There's nothing sweet about that.

Do you want to learn the material you're studying—like, reallylearn it? {#blank#}1{#/blank#}One learning theory suggests that if you overlearn, you'll gain the ability to do something without having to think about it — and eventually obtain more knowledge. Here's what overlearning is and how to do it.

What is overlearning?

Simply put, overlearning means studying something even once you're sure you know it. Don't stop reviewing or studying just because you succeeded in memorizing something. {#blank#}2{#/blank#}

The purpose of overlearning is to make the task easy to ensure it is completed to a high standard with no stress. For example, a student wants to pass their spelling test which has 10 words. Knowing about overlearning, she doesn't just memorize each word, but also learns about the origins of each word. {#blank#}3{#/blank#} Similarly, a teacher wanting to learn about teaching strategies might not simply read one book — they may read ten books, watch videos, attend lectures (and maybe even write their own book).

How do you overlearn?

{#blank#}4{#/blank#} For instance, when using the Leitner method, always review all the flashcards you're assigned on a particular day, even if you feel like passing over them because you got them right last time. Repeatedly going over material you know well is the key to overlearning and eventual automatic recall.

Schedule blocks of time in your week for reviewing materials you've already mastered. {#blank#}5{#/blank#} Continually reintroducing familiar ideas to yourself will dig them deeper into your long term memory.