The Healthy Habits Survey(调查)shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.
1．How many times did you brush your teeth yesterday?
·Finding：A full 33% of seniors brush their teeth only once a day.
·Step：Remove the 300 types of bacteria in your mouth each morning with a battery－operated toothbrush. Brush gently for 2 minutes, at least twice a day.
2．How many times did you wash your hands or bathe yesterday?
·Finding：Seniors, on average, bathe fewer than 3 days a week. And nearly 30%wash their hands only 4 times a day—half of the number doctors recommend.
·Step：We touch our faces around 3,000 times a day－often inviting germs(病菌)to enter our mouth, nose, and eyes.Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.
3．How often do you think about fighting germs?
·Finding：Seniors are not fighting germs as well as they should.
·Step：Be aware of germs. Do you know it is not your toilet but your kitchen sponge(海绵)that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.

Plastic-Eating Worms

    Humans produce more than 300 million tons of plastic every year. Almost half of that winds up in landfills(垃圾填埋场), and up to 12 million tons pollute the oceans. So far there is no effective way to get rid of it, but a new study suggests an answer may lie in the stomachs of some hungry worms.

    Researchers in Spain and England recently found that the worms of the greater wax moth can break down polyethylene, which accounts for 40% of plastics. The team left 100 wax worms on a commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it. To confirm that the worms' chewing alone was not responsible for the polyethylene breakdown, the researchers made some worms into paste(糊状物) and applied it to plastic films. 14 hours later the films had lost 13% of their mass — apparently broken down by enzymes (酶) from the worms' stomachs. Their findings were published in Current Biology in 2017.

    Federica Bertocchini, co-author of the study, says the worms' ability to break down their everyday food — beeswax — also allows them to break down plastic. “Wax is a complex mixture, but the basic bond in polyethylene, the carbon-carbon bond, is there as well,” she explains, “The wax worm evolved a method or system to break this bond. ”

    Jennifer DeBruyn, a microbiologist at the University of Tennessee, who was not involved in the study, says it is not surprising that such worms can break down polyethylene. But compared with previous studies, she finds the speed of breaking down in this one exciting. The next step, DeBruyn says, will be to identify the cause of the breakdown. Is it an enzyme produced by the worm itself or by its gut microbes(肠道微生物)?

    Bertocchini agrees and hopes her team's findings might one day help employ the enzyme to break down plastics in landfills. But she expects using the chemical in some kind of industrial process — not simply “millions of worms thrown on top of the plastic.”

    Sometimes you'll hear people say that you can't love others until you love yourself. Sometimes you'll hear people say that you can't expect someone else to love you until you love yourself. Either way, you've got to love yourself first and this can be tricky. Sure we all know that we're the apple of our parents' eyes, and that our Grandmas think we're great talents and our Uncle Roberts think that we will go to the Olympics, but sometimes it's a lot harder to think such nice thoughts about ourselves. If you find that believing in yourself is a challenge, it is time you build a positive self-image and learn to love yourself.

    Self-image is your own mind's picture of yourself. This image includes the way you look, the way you act, the way you talk and the way you think. Interestingly, our self-images are often quite different from the images others hold about us. Unfortunately, most of these images are more negative than they should be. Thus changing the way you think about yourself is the key to changing your self-image and your whole world.

    The best way to defeat a passive self-image is to step back and decide to stress your successes. That is, make a list if you need to, but write down all of the great things you do every day. Don't allow doubts to occur in it.

    It very well might be that you are experiencing a negative self-image because you can't move past one flaw or weakness that you see about yourself. Well, roll up your sleeves and make a change of it as your primary task. If you think you're silly because you aren't good at math, find a tutor. If you think you're weak because you can't run a mile, get to the track and practice. If you think you're dull because you don't wear the latest trends, buy a few new clothes. But remember, just because you think it doesn't mean it's true.

    The best way to get rid of a negative self-image is to realize that your image is far from objective, and to actively convince yourself of your positive qualities. Changing the way you think and working on those you need to improve will go a long way towards promoting a positive self-image. When you can pat yourself on the back, you'll know you're well on your way. Good luck!

Not all English is the same

    To many learners of English, it's easy to think that all native speakers have no trouble communicating with one another.

    {#blank#}1{#/blank#}

    Well, it turns out that being a native English speaker from one country doesn't mean that you're able to perfectly understand a native English speaker from another country, and vice versa (反之亦然)

    Take the UK and the US for example.

    As a Briton, I grew up hearing American accents alongside British ones – on TV shows, movies and in songs.{#blank#}2{#/blank#} and how they would eat “cookies” instead of “biscuits”.  And it took me a while to figure out that the “trunk” (n. 后备箱) of a car is what us Britons call its “boot”.

    The confusion didn't stop at just vocabulary –{#blank#}3{#/blank#} For example, when talking about shopping malls, Americans pronounce it “mawl” instead of “mal”. And for some reason that's hard for Britons to understand, Americans remove the “H” sound from “herb”, pronouncing it “erb”.

    These small differences may not change much in a day-to-day conversation between a Briton and an American.{#blank#}4{#/blank#} Recently, for example, an American friend told me that she liked my pants. “You can see them?” I asked, shocked. Pants means “underpants” to most British people, which explains my horror.

    {#blank#}5{#/blank#} In the US, for example, a “bum” is a homeless person, while the same word in the UK is used to describe one's backside（n.臀部）.

    And, more amusingly, “trump” was only ever really used as a verb in the UK – meaning “to pass gas” – until the US' current president came into the spotlight.

But as long as you can speak one version of English, it's easy enough to understand any other – and any confusion just makes your day more interesting.

A. English is changing as it spreads around the world.

B. After all, English is English, isn't it?

C. I soon noticed how Americans would put “gas” in their cars instead of “petrol” .

D. However, confusion can still happen every now and then.

E. There are different words that mean the difficult thing.

F. Some words can even be offensive (adj.无礼的) without you realizing it.

G. I discovered that many words are even pronounced differently.

    Your local grocery store is a psychological minefield (布雷区), where even the bananas are ripe with mystery.

    ⒈Southpaws (左撇子) have an invisible advantage

    You've probably seen that stores keep go-to items produce, meats, dairy on the outer edge. But did you notice that most of them are set up to make you run counterclockwise (逆时针)? Ninety percent of us are right-handed, so we buy more when it's counterclockwise. You'll also often find the dairy section in the back-left corner: Because dairy is likely on your list, stores make sure you take the longest route to get there. In fairness, it's also a more convenient place to put a fridge.

    ⒉Everything is in its place

    It's safe to say that nothing you see on a shelf is there by chance. The cookies on sale at the end of a passage are likely the result of smart product placement. More expensive items are usually placed at an adult's eye level, while colorful treats and other products for kids are positioned lower to catch the attention of children.

    ⒊Time goes by so slowly

    Stores rarely have windows or clocks. With no reference to the outside world, customers can easily lose track of how long they've been there so that they can buy more. Grocery stores may use another trick to control your sense of time: small floor tiles (瓷砖).

    Maybe once you lived with your roommates! Many of us live with a roommate at some stage. Sometimes, there can be problems. Who hasn't had an argument about whose turn it is to take out the rubbish or who should be the one to clear up after dinner? {#blank#}1{#/blank#} 

    You know that there's always someone else around, which can help you feel safer. There is always someone to talk to, so you never feel lonely. Besides these obvious benefits, there are some you may not notice. {#blank#}2{#/blank#}

    To examine the effect of living alone, Australian university researchers did much research and found that people living alone tended to eat less fresh food, which can have a significant negative effect on long-term health. However, those living with others generally benefited from a more varied diet compared to those living alone.

    {#blank#}3{#/blank#} The researchers believe the social and cultural roles played by cooking, food preparation and eating may be important considerations. For example, those living with friends have someone else to go shopping with, and thus are likely to buy high-quality fresh food regularly.

    {#blank#}4{#/blank#} If people living alone find they do not have the knowledge required to prepare a particular dish or cook a certain food, they may fall back on ready-made, less healthy food.

    However, if they live with at least one other person, they maybe able to ask for help.

    In addition, people living alone can eat whatever they want at any time of the day or night. However, it's helpful to have someone around who questions your decision to eat frozen pizza at 3 am. {#blank#}5{#/blank#}

    So, if you now live alone and find yourself fighting a losing battle against poor eating habits, why not consider sharing a home with someone else? You could encourage one another onto greater health and well-being.

A. Cooking skills maybe another factor.

B. In other words, roommates can draw your attention to unhealthy routines.

C. Living with a roommate could be good to share your expenses and contribute to your home's maintenance.

D. For example, we're actually more likely to eat healthier food when living with others.

E. What could explain these findings?

F. It's hard to find someone who doesn't grate on your nerves, has a similar cleanliness level as you and goes to bed at the same time.

G. However, living with another person also comes with many benefits.