Organic exercise is a good fit for people looking to train functionally. It is defined as exercise that is similar to the type of physical activity performed by ancient hunter-gatherer ancestors. Organic exercise is generally preformed in natural or outdoor settings. {#blank#}1{#/blank#} Organic exercise may include such activities as walking, jogging, swimming, hiking or rock climbing.

    When it comes to organic exercise, one of its most significant benefits is its limited reliance on equipment. {#blank#}2{#/blank#} Going for a jog, walking, or even hiking does not require tools, weights, or even hiking does not require tools, weights, or other products, and therefore, is fairly inexpensive.

    Since the types of activity emphasized in organic exercise programs are similar to those performed as part of daily life, they do not require extensive or long amounts of practice to obtain proficiency(精通). {#blank#}3{#/blank#} Therefore the type of activity recommended in an organic workout routine can be performed by beginning or advanced exercisers alike with relative ease.

    While the type of exercise recommended in an organic workout may be easy enough to perform, the intensity at which it is recommended can be too much for some individuals. {#blank#}4{#/blank#} Individuals who are new to exercise or suffer from a chronic health condition that limits their physical ability may find it difficult to perform exercise that is especially strenuous.

    {#blank#}5{#/blank#} Individuals who are new to exercise may want to talk with their health care provider before choosing this type of activity. In some cases, it may be better to start off with a more traditional workout and slowly transition to organic exercise than starting with this regimen(养生法)right off the bat.

A. Weigh both the benefits and drawbacks.

B. In fact, it can be done nearly anywhere, any time.

C. Therefore it requires very little helping equipment.

D. Choosing the right types of organic exercise is important.

E. Most adults already know how to hike, swim or dig, for example.

F. In fact, one of the biggest drawbacks is the emphasis on high-intensity exercise.

G. While organic exercise may be a good choice for some, it is right for all adults.

B

    According to a new study ,a smiley face emoji（笑脸符）in work-related e-mails may not create a positive impression and could even weaken information sharing. In formal business emails, a smiley is not a smile.

    In one of the experiments, people were asked to read a work-related e-mail from an unknown person and then tell about both the ability and warmth of that person. Before that, they all received similar messages. But some included smileys while others did not. The results suggested that contrary to face-to-face smiles, which increase both ability and warmth, the smileys in a business e-mail had no effect on the perception（感知）of warmth, and in fact had a bad effect on the perception of ability. The perceptions of low ability in turn weakened information sharing.

    In another experiment, the use of a smiley was compared to a smiling or neutral photograph. The findings showed that in the case（情况）of a photograph, a smiling sender was judged to be more able and friendly than a neutral one. However, when an e-mail on formal work-related maters included a smiley, the sender was thought to be less able. The smiley did not influence the opinion on the sender's friendliness.

    “People are easy to accept that a smiley equals a real smile, but the findings of this study show that in the workplace, this seems not the case, especially when first communications are concerned.” Dr. Glikson says. “In such a situation, it is better not to use smileys to people at whatever age. Smileys could hardly be a wise choice to a person you are not familiar with.”

    Honeybees can do three kinds of jobs.

    It is one of the most unusual insects in the world. Bees are special because they divide up their honeybee work. Each bee has a certain job to do.

    The busiest bee is the worker. Workers build the nest, called a hive. Inside the hive, workers make a honeycomb from wax(蜂蜡). They store honey there for food. Workers are always cleaning and fixing the hive. They even stand at the opening and fan their wings to cool the hive. Worker bees will attack anything—even people—to keep their hive safe, if need.

    Another kind of bee is the drone(雄蜂). Drones are male bees, and their job is to fly with the queen bee and mate with her. After the queen mates, the worker bees drive the drones away. The drones then starve to death.

    The third kind of bee is the queen. Each hive needs only one queen, and her job is laying eggs. She can lay as many as 2, 000 eggs a day.

    Whether in the home or the workplace, social robots are going to become more common in the next few years. Social robots are about to bring technology to the everyday world in a more humanized way, said Cynthia Breazeal, chief scientist at the robot company Jibo.

    While household robots today do the normal housework, social robots will be much more like partners than tools. For example, these robots will be able to tell when someone is happy or sad. This allows them to respond more properly to the user.

    The Jibo robot, arranged to ship later this year, is designed to be a personalized assistant. You can talk to the robot, ask it questions, and make requests for it to perform different tasks. The robot doesn't just give general answers to questions; it responds based on what it learns about each person in the household. It can do things such as reminding an elderly family member to take medicine or taking family photos.

    Social robots are not just finding their way into the home. They have potential(潜在的) applications in everything from education to health care and are already finding their way into some of these areas.

    Fellow Robots is one company bringing social robots to the market. The company's “Oshbot” robot is built to assist customers in a store, which can help the customers find items and help guide them to the product's location in the store. It can also speak different languages and make recommendations for different items based on what the customer is shopping for.

    The more interaction the robot has with humans, the more it learns. But Oshbot, like other social robots, is not aimed to replace workers, but to work together with other employees. “We have technologies to train social robots to do things not for us, but with us,” said Breazeal.

    Languages have been coming and going for thousands of years, but in recent times there has been less coming and a lot more going. When the world was still populated by hunter-gatherers, small, tightly knit(联系) groups developed their own patterns of speech, independent of each other. Some language experts believe that 10,000 years ago, when the world had just five to ten million people, they spoke perhaps 12,000 languages between them.

    Soon afterwards, many of those people started settling down to become farmers, and their languages too became more settled and fewer in number. In recent centuries, trade, industrialization, the development of the nation-state and the spread of universal compulsory education, especially globalization and better communications in the past few decades, all have caused many languages to disappear, and dominant languages such as English, Spanish and Chinese are increasingly taking over.

    At present, the world has about 6,800 languages. The distribution of these languages is hugely uneven. The general rule is that mild zones have fewer languages spoken by many people while hot, wet zones have more, often spoken by small numbers. Europe has only around 200 Languages: the Americas about 1,000, Africa 2,400; and Asia and the Pacific perhaps 3,200, of which New Guinea alone accounts for well over 800. The median number(中位数) of speakers is a mere 6,000, which means that half the world's languages are spoken by fewer people than that.

    Now over 400 of the total of 6,800 languages are close to extinction(消亡), with only a few elderly speakers left. None of these seems to have chances of survival.

    Before you make friends, you have to decide who you want to be your friends.

    Most people like to have friends who like to do the same kind of things they do.

    The quickest way to make a friend is to smile. When you smile, people think you are friendly and easy to talk to. It may not be easy at first to smile, but remember most people will stay away from a scaled or angry looking.

    One easy way to start a conversation with someone is to say something nice about him. Think about how great you feel when someone says something nice to you. Doesn't it make you want to keep talking to that person?

    Ask your new friends questions about themselves. Who's their favourite singer, where do they live, what do they do after school are all good questions to start a conversation. Make sure you have something to add to the conversation, too. Then someone asks you a question, do have an answer for it. There is nothing that will stop a conversation quicker than a shrug for an answer.

    Kids who show an interest in other kids and who are kind and friendly make good friends. Remember, everyone wants to be around people who like to do similar things and people who are nice to them.