Testing the five-second rule

    You may have seen a friend drop food on the floor, pick it up, and eat it, while declaring, “Five-second rule! ” It's said that food dropped on the floor for five seconds or less is still likely to be clean. {#blank#}1{#/blank#}.

    Students at Britain's Aston University, led by microbiology professor Anthony Hilton, tested the rule and found it to have some scientific basis. The study's results show that food dropped for five seconds is less likely to contain bacteria than if it sits there for longer, according to Hilton.

    The students also found that the type of flooring where the dropped food lands has an effect. {#blank#}2{#/blank#} Bacteria are most likely to transfer from tiled (铺瓷砖的) surfaces to moist food when the food has stood there for more than five seconds.

    {#blank#}3{#/blank#} Therefore, consumers should still be cautious. “However, the findings of this study will bring some light relief to those who have been employing the five-second rule for years, despite a general consensus that it is purely a myth,” professor Hilton said in a statement.

    The research team at Aston also surveyed 500 people to find out who employs the five-second rule. Of the people surveyed, 87% said they would eat food dropped on the floor, or have done so in the past. {#blank#}4{#/blank#} “Our study showed people are also more likely to follow the five-second rule, which our research has shown to be much more than an old wives' tale,” Hilton says.

    Still, scientists say you should be careful about eating food dropped on the floor, especially if you have doubts about the cleanliness of the surface. {#blank#}5{#/blank#}

A. But is that true?

B. Carpeted surfaces posed the lowest risk.

C. Of those people, the majority were women.

D. We've just lost our last excuse to eat food off the floor.

E. Usually people recover from the infection in five to ten days.

F. There is still a risk of infection if certain bacteria are present on the dropped surface.

G. A biologist points out that one in six Americans get sick from food poisoning every year.

    All over the world people are hooked on sports, which help them to strengthen their body and build their character.{#blank#}1{#/blank#} They improve the participants' physical skills, and provide entertainment for the audience as well.

    Many people like to watch others play games.{#blank#}2{#/blank#}Often they get very excited when “their” player or team wins. If they are crazy about the game or the player, then they'll become their die-hard fans. Some sports are so interesting that people everywhere go in for them. Football, for example, has spread around the world. Swimming is popular in countries near the sea or in those with many rivers.{#blank#}3{#/blank#}And think of people in cold countries. Masses of people love to skate or ski in Japan, Norway or Canada.

    {#blank#}4{#/blank#}Chinese boxing, also has a very long history. But basketball and volleyball are rather new, which started in the late of the nineteenth century. People are inventing new sports or games all the time. Water skiing, as a modern game, is one of the newest in the family of sports.

    People from different countries or races may not be able to understand each other, but after a game, they get to know each other better and they often become good friends.{#blank#}5{#/blank#}They learn to fight hard but fight fair, to win without pride and to lose with grace. They also learn to be competitive and optimistic, which will equip them for life challenges in the future.

A. They buy tickets or turn on the TV to watch the games.

B. What fun it is to jump into a pool or lake, whether in China, Egypt or Italy!

C. Some sports or games date back thousands of years, like running or jumping.

D. Sports help to train a person's character.

E. Chinese people liked doing sports even in ancient times.

F. Sports are competitive physical activities or games through casual or organized participation.

G. And the friendship may last for a life time.

    Sticking to your body's natural sleep-wake cycle is one of the most important strategies for achieving good sleep. If you keep a regular sleep schedule, you will feel much more refreshed and energized than if you sleep the same number of hours at different times. This holds true even if you change your sleep schedule by only an hour or two.{#blank#}1{#/blank#} Try the following ways to help you stick to your body clock, and you will have a better sleep.

    {#blank#}2{#/blank#} Keeping a regular sleep-wake schedule helps set your body's internal clock and improve the quality of your sleep. Start by setting realistic bedtime that will work with your lifestyle.{#blank#}3{#/blank#} If you're getting enough sleep, you should wake up naturally without an alarm. If you need an alarm clock to wake up on time, you may need to set earlier bedtime.

    Avoid sleeping in — even on weekends or nights you've stayed up late.{#blank#}4{#/blank#} If you need to make up for late night, choose a daytime nap rather than sleeping in. This way allows you to pay off your sleep debt with disturbing your natural sleep-wake rhythm.

    Be smart about napping. As mentioned above, napping is a good way to recharge and make up for lost sleep hours. But if you tend to have trouble falling asleep or staying asleep throughout the night, napping can make things worse.{#blank#}5{#/blank#} Besides, limiting them to 15 to 20 minutes in the early afternoon is a good idea.

A. Never sleep after dinner.

B. Consistency is vitally important.

C. Try to go to sleep and get up at the same time every day.

D. Don't turn to sleeping pills every time you can't sleep quickly.

E. If sleeplessness is a problem for you，consider ridding naps altogether.

F. Choose a time when you normally feel tired, so that you will fall fast asleep.

G. The more your weekend / weekday sleep schedules differ, the worse the jet lag-like symptoms you will experience.

    After a long day at work, coming home is a breath of fresh air. Home is a comfortable place to sit back and relax. {#blank#}1{#/blank#}Below are a number of things we can do to create a healthy home environment that will help to ease the workday stress and promote our physical and mental health.

    {#blank#}2{#/blank#}It may seem like a tiring thing to clean but there is a reason for doing so. We can remove dust by cleaning the house. Leaving layers of dust everywhere means that there is a build-up of dust. And where do these layers of dust go? Into our lungs.

Making sure the rooms are full of sunlight is also important. We may not realize it but sunlight is an important part of our growth. We all know that sunlight promotes better working conditions. {#blank#}3{#/blank#}Think about using a Parans system where sunlight does not reach. This technology gathers the sunlight by using solar panels(板). It can send out sunlight wherever we are.

    It is also a good idea to add more plants in our house. {#blank#}4{#/blank#}They also give off oxygen, which can lower stress and improve our moods.

    Along the lines of being green, it can also be vital to think about what things we are bringing into the house. Try to avoid specific plastics that are harmful to health. {#blank#}5{#/blank#}They may contain poisonous chemicals that can be breathed in, or simply absorbed through the skin.

A. However, is it as healthy as it can be?

B. Is our home as comfortable as it used to be?

C. The same thing applies to certain carpets and paint

D. Going green will help to remove toxins(毒素) in the air.

E. Besides, it can reduce both stress and high blood pressure.

F. Cleaning the house regularly is the first thing we should do.

G. It is acknowledged that a greener lifestyle is linked to better health.

    Every student has his/her own style of studying and it's up to you to use the available resources to be as effective and productive as possible. Here are some tips on how to study effectively.

    ● Know yourself. When determining the best approach, you need to assess your personality. Some people can read for hours while others can't sit still through more than one chapter. Find your pace, improve it and work around your strengths and weaknesses.

    {#blank#}1{#/blank#}If you prefer being alone, learn to study by yourself.

    ●Set a goal. {#blank#}2{#/blank#}It'll not only help you keep focused and stay on track, but it'll also help you organize your time and activities.

    ●Learn over time. It's impossible to learn a lot of things in a short time. If you don't know or understand the lesson from the start, you won't get it the night before your big test. {#blank#}3{#/blank#}

    ●{#blank#}4{#/blank#}Allocate(分配) your time between studying and other activities. Create a routine schedule for your studying time. Strictly follow this schedule so as to develop an effective studying session.

    ●Have time to rest. It's necessary to have enough time to rest in order to regain all the energy used up by the body from all the studying. {#blank#}5{#/blank#}Communicate with other people and participate in recreational activities to help you relax and refresh your mind.

    Following the tips above, you can easily have your way of studying effectively!

A. Have good study habits.

B. Set a realistic and reasonable schedule.

C. Try to discover the type of reading that best suits you.

D. Your mind won't be so sharp if you don't have enough sleep.

E. You need to determine what you want to achieve in a given subject.

F. If you need other people to help you, get a tutor(家教) or join a study group.

G. It's best to study smaller loads of information repeatedly over a period of time.

You know that eating healthy, staying active, and solving a few brain games can help keep your memory. But the following lesser-known habits work wonders too.

⒈{#blank#}1{#/blank#}

When we sit with our shoulders bent forward, this defeated position actually causes us to feel anxious or depressed — which makes it harder to think clearly and remember things. Conversely (反过来), straight upright posture apparently improves memory because it boosts blood and oxygen flow to the brain.

⒉ Exercise — Once

Having trouble remembering faces? {#blank#}2{#/blank#} In a study, pictures of faces were shown to

older folks after they pedal a stationary (静止的) bike at an intense pace or simply sit on a self-pedaling bike. On average, people remembered the faces better after the intense exercise. What's more, the memory gains after a single workout were similar to the gains after 3 months of regular exercise.

⒊ Limit TV

Every parent and grandparent has heard that too much screen time can hurt a child's cognitive development. {#blank#}3{#/blank#} According to a study, people (aged 50 or older) who watched more than 3. 5 hours of TV a day for 6 years experienced a greater drop in verbal memory test scores than those who watched less.

⒋ Draw aimlessly

A research shows those who drew the words remembered the most when recalling words. That's because while some parts of the brain about getting memory back become worse as people grow older, the picture processing regions usually don't.  {#blank#}4{#/blank#}    

⒌ Walk Backward

{#blank#}5{#/blank#}Walk back! Backward motion — whether real, imagined, or watched — helps people remember the information better than sitting still and, in most cases, better than forward motion. It may be that moving backward in space mentally helps us move back in time to the moment we learned something.

A. Sit Tall.

B. Stand Straight.

C. Start more workouts.

D. Sweat for physical training.

E. Thus sketching can help adults keep their memory sharp.

F. But what about those at the other end of their life span?

G. Next time you're trying to recall something, don't just think back.