Robert is nine years old and Joanna is seven. They live at Mount Ebenezer. Their father has a big property. In Australia they call a farm a property.

    Robert and Joana like school very much. At school they can talk to their friends, but Robert and Joanna can not see their friends. They live 100,perhaps 300,miles away and like Robert and Joanna, they all go to school by radio.

    Mount Ebenezer is in the centre of Australia. Not many people in “The Centre”, there are no schools with desks and blackboards and no teachers in “The Centre”.  School is a room at home with a two-way radio. When all students answer, lessons begin.

    Think of your teacher 300 miles away!

    “One thing I enjoy about my job is that I can work on something that is actually active,” says Game McGimsey, an American volcanologist(火山学家). Part of his job includes keeping an eye on Alaska's many active volcanoes and giving people a heads-up when a volcano might erupt(喷发).

    Like most jobs in the science, volcanology requires a lot of education. McGimsey received an undergraduate degree in geology at the University of North Carolina, then landed an internship(实习期) with a geologist at the USGS(美国地质勘探局) whose work field was about volcanoes. After earning a graduate degree at the University of Colorado, McGimsey accepted a job with the USGS and has been with the Alaska Volcano Observatory for 25 years.

    Volcanoes can influence the world in ways we might not think about. For example, on Dec.15 1989, a 747 jetliner (a large airplane) flew through a thick ash cloud produced by Mount Redoubt, an Alaskan volcano that hadn't erupted in 25 years. The ash caused all four engines to die, and the plane's electronics went dead.

    “The plane was within several thousand feet of flying into the mountains below when the pilots got a couple of engines restarted and landed safely in Anchorage,” McGimsey says. It cost nearly $80 million to repair the damage to the plane.

    Such situations show just how dangerous volcanoes can be. However, volcanologists know the risks and are prepared to protect themselves.

    McGimsey admits, “There is certainly a higher danger level in volcanology than some other jobs. We understand how serious the danger is, and we don't like taking unnecessary chances. We avoid getting too close to an erupting volcano, because it is not worth injury or death simply to get a rock or a photograph.”

    On 20th July 1969, millions of people saw Neil Armstrong take his first steps in space on television. Armstrong got out of the spacecraft Apollo 11, touched the ground of the moon and said, “That's one small step for man, one giant leap for mankind.”

    A conspiracy(阴谋)theory has existed since the night of his lunar handing. Armstrong's achievements were considered amazing, but people wondered if it really happened. Many people believe that the scene on the moon wasn't real. Rumours spread throughout coffee shops, street comers, and newspapers, but it soon died down.

    But theories resurfaced in 2001 Suspicion began when an American television network aired a program called Conspiracy Theory: Did We Land on the Moon? The show argued that NASA did not have the money for such a voyage, and that the whole scene was probably filmed in a movie studio. Many critics say that there were no stars in the background during the lunar landing, so it must have been a fake. They also point out that the American flag that was posted was waving. How could that be if there is no wind on the moon?

    NASA(National Aeronautics and Space Administration)has denied these rumours many times. They explained that now photographers can capture the brightness of the astronauts with the dimness of the stars behind them. Also, they said that the flag was waving because the astronauts were pulling it back and forth trying to get it deeper into the rock. NASA also points out that the television program fails to mention that Armstrong and his team brought back 800 pounds of rock from the moon.

    Nell Armstrong is seen as a national icon in the US and his lunar landing is one of the most historic events in the country's history. But either way, this conspiracy theory still exists today.

    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.

    It's that time of year when people need to lock their cars. It's not because there are a lot of criminals running around stealing cars. Rather, it's because of good-hearted neighbors who want to share their harvest. Especially with this year's large crop, leaving a car unlocked in my neighborhood is an invitation for someone to fill it with zucchini（西葫芦）.

    My sister, Sharon, recently had a good year for tomatoes. She and her family had eaten and canned so many that they had begun to feel their skin turn slightly red. That's when she decided it was time to share her blessings. She started calling everyone she knew. When that failed, she began asking everyone in the neighborhood, eventually finding a neighbor delighted to have the tomatoes. "Feel free to take whatever you want, "Sharon told her. Later that day, Sharon found that her garden had indeed been harvested. She felt happy that she could help someone and that the food didn't go to waste.

    A few days later, Sharon answered the door. There was the neighbor, holding a hot loaf of bread. The neighbor smiled pleasantly, "I wanted to thank you for all of the tomatoes, and I have to admit that I took a few other things and hoped you wouldn't mind. "

    Sharon couldn't think of anything else in her garden that had been worth harvesting and said so. "Oh, but you did, "the neighbor said. "You had some of the prettiest zucchini I've ever seen. "

    Sharon was confused. They hadn't even planted any zucchini. But her neighbor insisted that there really were bright-green zucchini in her garden. Sharon felt curious and decided to go to see where the zucchini had grown. The two of them walked together into the backyard. When the neighbor pointed at the long green vegetables, Sharon smiled. "Well, actually, those are cucumbers（黄瓜）that we never harvested, because they got too big, soft and bitter for eating. "

    The neighbor looked at Sharon, shock written all over her face. She gulped（哽住）a few times, and then, smiling, held out the bread, part of a batch she had shared all over the neighborhood. "I brought you a nice loaf of cucumber bread. I hope you like it. "

    In the past five years, Instagram has taken off faster than anyone would have ever expected. It has become more than just a social media platform; it has become a community. With this community of over 800 million people, there are two distinct sides when it comes to diet culture and weight-loss programs. These two sides are body positivity and body manipulation(操纵）

    I have run a food and lifestyle blog/Instagram for over two years, and I have experienced both of these sides shown through Instagram. I have followed accounts (账户) that have been about strictly counting their calories, and have looked at other people carefully for their food habits

    On the other side of this, the only accounts that I'll follow now are people who support intuitive eating, never calorie counting, and make sure to remind people that their weight is the least interesting thing. They try to remind people that food is fuel, rather than something that will make them lose or gain weight. This side of

    Instagram is what helps people suffering from eating disorders, rather than fueling them.

    The rise of Instagram also led to the rise of what we called" Instagram models. These people have a lot of fans and a very pleasant page on Instagram. Basically, this isn't a bad thing. Humans are attracted to attractive people. Where this does go wrong is when weight-loss programs, weight-loss products, and other people supporting different types of diets get in touch with these people and offer them pay to get their message across.

    We also run into issues with how the public thinks of and admires these people for only their bodies. Not only is it bad for the self-respect of the people viewing the account, but also for the mental health of the person running the Instagram account.

    The people that promote these products are usually attractive, with what we would consider "the perfect body and the products are almost always diet related in some way, which makes consumers believe that in order to reach this ideal body they must use this product.