Sharon，Aged 22

    The most important thing to keep in mind when going into high school is to be yourself．Besides, I don't know what your middle school was like, but high school teachers will not care about things such as how much homework you already have in one night．It's best to just learn to deal with things and manage your time wisely so you can achieve everything you need to.

Frank, Aged 21

    I think almost every kid feels both nervous and excited before their first day．You will probably love it．I know I did．You should join some sports or activities that will make your high school experience more enjoyable．Good luck!

Eddie，Aged 20

    When I started high school I was really nervous too，especially since I had been homeschooled all through middle school and didn't really know anyone．I suppose the best advice would be to just relax．The first couple of days can be a little bit hard，but things will become easier before you know it.

David，Aged 19

    I'm not going to lie．The first day is kind of frightening(令人恐惧的)．But you'll get used to it．Don't be afraid of anyone；upperclassmen will pick on(刁难) you more if you let them know you're afraid．Just take it easy．Making some friends and staying with them will greatly help you get used to high school quickly．After the first week it's really not bad at all．Don't worry.

    Welcome to your future life!

    You get up in the morning and look into the mirror. Your face is firm and young-looking. In 2035, medical technology is better than ever. Many people your age could live to be 150, so at 40, you're not old at all. And your parents just had an anti-aging(抗衰老的) treatment. Now, all three of look the same age!

    You say to your shirt, “Turn red.” It changes from blue to red. In 2035, “smart clothes” contain particles(粒子) much smaller than the cells in your body. The particles can be programmed to change clothes' color or pattern.

    You walk into the kitchen. You pick up the milk, but a voice says,“ You shouldn't drink that!” Your fridge has read the chip (芯片) that contains information about the milk , and it knows the milk is old . In 2035, every article of food in the grocery store has such a chip.

    It's time to go to work. In 2035, cars drive themselves. Just tell your “smart car” where to go. On the way, you can call a friend using your jacket sleeve. Such “smart technology” is all around you.

    So will all these things come true? “For new technology to succeed,” says scientist Andrew Zolli ,”it has to be so much better that it replaces what we have already.” The Internet is one example—what will be the next?

    If two scientists at Los Alamos National Laboratory are correct, people will still be driving gasoline powered cars 50 years from now, giving out heat-trapping carbon dioxide(二氧化碳) into the atmosphere—and yet that carbon dioxide will not contribute to global warming.

    In a proposal by two scientists, vehicle emissions(排放) would no longer contribute to global warming. The scientists, F. Jeffrey Martin and William L. Kubic Jr., are proposing a concept, which they have named Green Freedom, for removing carbon dioxide from the air and turning it back into gasoline.

The idea is simple. Air would be blown over a liquid solution of potassium carbonate, which would absorb the carbon dioxide. The carbon dioxide would then be put to chemical reactions that would turn it into fuel(燃料): gasoline or jet fuel.

    This process could change carbon dioxide from an unwanted, climate-changing pollutant into a vast resource for renewable fuels. The cycle—equal amounts of carbon dioxide produced and removed—would mean that cars, trucks and airplanes using the synthetic(合成的) fuels would no longer be contributing to global warming.

    Although they have not yet built a synthetic fuel factory, or even a small model, the scientists say it is all based on existing technology. “Everything in the concept has been built, is operating or has a close cousin that is operating.” Dr. Martin said.

    The Los Alamos proposal does not go against any laws of physics, and other scientists who have independently suggested similar ideas. Dr. Martin said he and Dr. Kubic had worked out their concept in more detail than former proposals.

    There is, however, a major fact that explains why no one has built a carbon-dioxide-to-gasoline factory: it requires a great deal of energy.

    According to their analysis, their concept, which would cost about $5 billion to build, could produce gasoline at an operating cost of $1.40 a gallon and would turn economically practical when the price at the pump hits $4.60 a gallon.

    Other scientists said the Los Alamos proposal perhaps looked promising but could not evaluate it fully because the details had not been published. “It's definitely worth pursuing,” said Martin I. Hoffert, a professor of physics at New York University. “It's not that new an idea. It has a couple of pieces to it that are interesting.”

    The loud noise of the cars or the sound of a plane can force its way into the deepest forest, yet it's not only humans that are bothered by the noise.

    Bioacoustician Bernie Krause has been studying the effect of noise pollution on wildlife, and has come across some interesting behaviors, especially among animals that communicate by sound, like humans. Birds use sound to communicate, but in noisy places, these animals have to shout over the natural noise to be heard.

    Krause mentions a study of nightingales(夜莺) to explain what he means. The birds responded to（回应） traffic noise by singing louder and louder until they actually went beyond noise pollution standards in the city. To belt out (sing loudly) their songs, they increased their lung pressure fivefold, but scientists say that this is not dangerous for the birds themselves.

    Studies show that sudden noise can cause certain birds to leave their nests, leaving the young to their enemies. One study also showed that songbirds that nested close to busy motorways were much less productive than those that nested farther away. Mammals（哺乳动物）too are affected(影响). A recent study showed that nursing caribou（驯鹿） responded to plane noise by not producing enough milk to feed their young.

    In some cases noise pollution can actually help some animals while harming others. Toads（蟾蜍）and frogs are known to sing in union（同步发声）so that no predator (their enemies) can catch them. Krause found that when planes flew overhead and disturbed the toad's song, they lost their union, and it took them 45 minutes to get it back again. That gave their natural enemies plenty of time to find and catch individual toads by sound.

    According to Kruse, 'Not only will noise pollution bother wildlife, but it won't help our lives either.'

    We were on tour a few summers ago, driving through Chicago， when right outside of the city, we got pulled over(被迫停车). A middle-aged policeman came up to the car and was really being troublesome at first. He said,“ You were speeding. Where are you going in such a hurry?” Our guitarist, Tim, told him that we were on our way to Wisconsin to play a show. Then his way towards us totally changed. He asked, “Oh, so you boys are in a band(乐队)?” We told him that we were. He then asked all the usual band questions about the type of music we played and how long we had been at it.

    Suddenly, he stopped and said, “Tim, you want to get out of this ticket, don't you?” Tim said, “Yes.” So the officer asked him to step out of the car. The rest of us, inside the car, didn't know what to think as we watched the policeman talk to Tim. Then the policeman put Tim in the back of the police car and threw the car into reverse(倒车), stopping a few feet in back of our car.

    Now we suddenly felt frightened. We didn't know if we were all going to prison. Suddenly, the policeman's voice came over in a loudspeaker. He said, “Ladies and gentlemen, for the first time ever, we have Tim here singing on Route 90.” Later we knew, the policeman had told Tim that if he sang one of our songs over the loudspeaker in the police car, we would get out of the ticket. Seconds later, Tim started screaming into the receiver. The policeman enjoyed the performance, and sent us on our way without a ticket.

    I have two kids, a boy and a girl. I don't worry about my girl; I'm sure she'll be well trained in mixed martial arts. I worry about my son. I'm pretty sure he's going to be feminine (女性化的). Sorry to say that, but let's face it. No dad wants his son to go feminine.

    At the rate we're moving in a couple of years you won't be able to tell the difference between boys and girls. Sound extreme? Think about this. In every movie where advanced time-traveling beings come to our planet, there's one constant: You can't tell the male aliens from the female aliens!

    But that's the future. Kids today are soft and fat. People ask why. Is it junk food? No. Junk food has been around for fifty years. Is it video games? No. Video games have been around for thirty years. None of the kids playing them back in the day were terribly obese. We're all scratching our heads trying to figure out what we've introduced to society to ruin our kids. But it's not anything we've added that has ruined our kids. It's stuff we've gotten rid of.

    Take the gym rope for example. Remember that thing that stretched from the floor to the ceiling in your gym class that you could never climb? Most of the kids couldn't make it to the top. But that wasn't the point; the point was that you had to try while some middle-aged guy who couldn't make it up a flight of stairs shouted at you. We should have put our son on that rope, and given him a head start. But we didn't want to shame the boy, so we took it down.

    Taking down the rope would be a good idea if there were no ropes in life. But they're everywhere. You just can't see them. They're in every goal unrealized and expectation not met. The point everyone missed about the rope is you weren't supposed to make it to the top. It was there to create a fire that burned in the oversize belly of every kid.