The evidence for harmony may not be obvious in some families. But it seems that four out of five young people now get on well with their parents, which is the opposite of the popularly-held image of unhappy teenagers locked in their room after endless family quarrels.

    An important new study into teenage attitudes surprisingly shows that their family life is more harmonious than it had ever been in the past. “We were surprised by just how positive today's young people seem to be about their families,” said one member of the research team. “They're expected to be rebellious(叛逆的) and selfish but actually they have other things on their minds: they want a car and material goods, and they worry about whether school is serving them well. There's more negotiation(商议) and discussion between parents and children, and children expect to take part in the family decision-making process. They don't want to rock the boat.”

    So it seems that this generation of parents is much more likely than parents of 30 years ago to treat their children as friends. “My parents are happy to discuss things with me and willing to listen to me,” says 17-year-old Daniel Lazall. “I always tell them when I'm going out clubbing. As long as they know what I'm doing, they're fine with me.” Susan Crome, who is now 21, agrees. “Looking back on the last 10 years, there was a lot of what you could call negotiation. For example, as long as I'd done all my homework, I could go out on a Saturday night. But I think my grandparents were a lot stricter with my parents than that.”

    Maybe this positive view of family life should not be unexpected. It is possible that the idea of teenage rebellion(反抗) is not rooted in real facts. A researcher comments, “Our surprise that teenagers say they get along well with their parents comes because of a brief period in our social history when teenagers were regarded as different beings. But that idea of rebelling and breaking away from their parents really only happened during that one time in the 1960s when everyone rebelled. The normal situation throughout history has been a smooth change from helping out with the family business to taking it over. ”

    Have you ever wondered why people drive on a different side of the road? It might seem bizarre that U. K. drivers stay on the left, but they're not the only ones. Around 35 percent of the world population do the same, including people in Ireland, Japan, and some Caribbean islands.

    Originally, almost everybody traveled on the left side of the road. However their way of transport was quite different from today: Think about four legs instead of four wheels. For Medieval swordsmen on horseback, it made sense to keep to the left to have their right arms closer to their enemies. Getting on or off was also easier from the left side of the horse, and safer done by the side of the road than in the center.

    So why did people stop traveling on the left? Things changed in the late 1700s when large wagons (货车) pulled by several pairs of horses were used to transport farm products in France and the United States. The wagon driver sat behind the left horse, with his right arm free to use his whip to keep the horses moving. Since he was sitting on the left position, he wanted other wagons to pass on his left, so he kept to the right side of the road.

    The British Government refused to give up their left-hand driving ways, and in 1773 introduced the General Highways Act, which encouraged driving on the left. This was later made law thanks to The Highway Act of 1835.

    When Henry Ford showed his Model T in 1908, the driver's seat was on the left, meaning that cars would have to drive on the right hand side of the road to allow front and back passengers to exit the car onto the roadside. However, British drivers remain on the left, and this is highly unlikely to change.

    Back in 1988, Red Delicious made up 70 to 80 percent of the domestic apple market. Over the years, farmers sold a lot of them because they looked great. But they had a floury texture (质地), and people want an apple that's firm, crisp(脆的)and juicy. I started searching for one. By 1994, threatened by varieties from Japan and New Zealand, the U.S. apple industry and Washington State University agreed that we had to grow our own.

    First, we cross-pollinated(授粉) existing apples: Collect pollen from one flower, put it on the tip of a pencil eraser, and rub it into another. We crossed dozens of crisp, tasty varieties such as Gala, Fuji, and Pink Lady. But the best breed came out of Honey Crisp and Enterprise parents. We grew the cross-bred seeds into 5-foot trees, grafted those to rootstocks(根茎) to make them start producing quickly, and planted them in evaluation gardens. A few years later, they fruited—and we began tasting.

    So I would walk down long rows of hundreds and thousands of trees, and when I found an attractive fruit, I'd bite, chew, spit it out. Most were terrible, but when I found one with good texture and taste, I'd pick 10 or 20 of them. Then I put them in cold storage to see how they would hold up after a few months. After that, three or four researchers sat down and tasted every apple. We checked acidity and sugar levels, which can break down over time, and tested firmness and crispness using instruments that measure pressure and cell breakdown.

    When we found exactly what we wanted, we planted and tested them all over again. Eventually, we ended up with the Cosmic Crisp. It can spend nine to 12 months in storage, and stay crisp, firm, juicy and sweet.

    A new study, a project of the researchers from the University of Pittsburgh in Pennsylvania, finds the fitness tracker probably does not help with weight loss.

    The devices are designed to record your physical activity. They are usually worn around the wrist, where they measure a person's heart rate. The research team looked at two groups of individuals. The first wore a fitness tracker and took part in health counseling (咨询) with experts to consider the best weight-loss plan. The researchers compared this group with people who only got health counseling.

    The study found that those only speaking with the health experts lost nearly 6 kilograms, but those using a fitness tracker lost only 3.5 kilograms. John Jakicic, the lead researcher, questioned the use of electronic devices for weight control in place of "effective behavioral counseling for physical activity and diet."

    The study involved 470 subjects aged between 18 and 35. Some of them were overweight, while others were considered obese (肥胖的). Over three fourths of the subjects were women. All the subjects were told to increase physical activity and start on a low-calorie diet. They had their weight measured once every six months. After six months, researchers divided the group into two parts: one continued with monthly counseling, while members of the other group were given a fitness tracker. Eighteen months later, both groups "showed significant improvements in fitness, physical activity, and diet," with no major difference between groups. However, when it came to losing weight, the people who only spoke with experts lost nearly twice as much weight.

    Jakicic said, "the study's findings are important because effective long-term treatments are needed to address America's obesity." More information is needed, he added, to learn how to best use these devices to change "physical activity and diet behaviors" in adults who want to lose weight.

    What do you do in a situation like this? You're eating dinner with friends at a nice restaurant. You're having a great time when a phone rings at the table next to you. A man takes out his phone and starts talking loudly about problems he's having with his girlfriend. He talks for almost ten minutes! {#blank#}1{#/blank#}

    Many people find cell phones useful in their daily lives. But we've all sat next to someone talking too loudly on a cell phone. You may want to tell the loudmouth to end the conversation, but let the management take care of those noisy customers. {#blank#}2{#/blank#} Here are a few rules:

    ▪Off means off! {#blank#}3{#/blank#} If a sign says "turn off cell phones", don't use your phone.

    ▪{#blank#}4{#/blank#} Speak softly and for a short time. Try to move away from other people.

    ▪Lights off, phone off! Never make calls in a theater or at the movies.

    ▪{#blank#}5{#/blank#} Talking on a cell phone while driving is dangerous. And watch where you're going when you're walking down the streets and talking on the phone.

    As more people use cell phones, things are only going to get worse. So, the next time you're getting ready to make a call, stop and consider the people around you.

Unit the 1980s, scientists were trained to ignore animal pain, according to the belief that the ability to feel pain was associated only with higher consciousness. However, today, scientists view humans as a species of animals, and largely accept that many species are capable of some level of self-awareness. {#blank#}1{#/blank#}

If you hit another person in the face, you can estimate their pain level by what they do or say in response. {#blank#}2{#/blank#} Gradually, scientists have developed a set of indicators of pain response in non-human animals. Demonstrating a response to a negative stimulation and displaying protective behavior of injured areas are two major signs.

{#blank#}3{#/blank#} Some researchers argue lobsters (龙虾) are too dissimilar to vertebrates (脊椎动物) to feel pain. Nonetheless, lobsters do satisfy all of the standards for a pain response. Lobsters guard their injuries, and learn to avoid dangerous situations. They are even believed to possess some level of consciousness. In result, today most scientists agree that injuring a lobster causes physical pain.

Due to growing evidence that the lobsters may feel pain, it is now illegal to boil lobsters alive or keep them on ice in some countries. Even in locations where boiling lobsters remains legal, many restaurants prefer more humane methods. {#blank#}4{#/blank#} To satisfy picky diners, more restaurants rule out the cruel cooking methods.

Currently, the most humane tool for cooking a lobster is the CrustaStun. This device electrocutes (电击) a lobster. {#blank#}5{#/blank#} The following process of cooking is sure to cause no pain. In contrast, it takes about 2 minutes for a lobster to die from boiling water during which time pain lasts.

A. But huge disagreement exists.

B. The creature instantly loses consciousness in half a second.

C. It beats the former method by saving chefs' effort in cleaning the creature.

D. It's difficult to assess pain in other species because we cannot communicate as easily.

E. People are coming to realize that other species might also enjoy the luxury of emotion.

F. Except for moral consideration, many chefs believe stress negatively affects the flavor (味道) of the meat.

G. Legal prohibition becomes the major consideration for restaurants when choosing a cooking method.