1 . The rapid increase of the oil price has brought the world to its senses. Scientists are seeking suitable alternative (替换) but so far in vain. They are considering how they can make better use of the two other major fuels, coal and natural gas, but they have found that neither can replace oil in their economics. In recent years, there has been a growing concern for the environment and coal is not a popular fuel with environmentalists. Natural gas, the purest of the three fuels, is also the most limited in supply.

The answer would seem to lie in nuclear power stations. They need very little fuel to produce enormous amounts of power and they do not pollute the atmosphere. Their dangers, however, are so great and the costs of building them are also high. Not only could one accident in a nuclear power station spread as much radioactivity (放射物) as a thousand Hiroshima atom bombs, but the radioactive waste from these stations is extremely dangerous.

Scientists have recently turned their attention to natural sources of energy: the sun, the sea, the wind and hot spring, of which the sun seems the most promising source for the future. Houses have already been built which are heated entirely by solar energy. However, solar energy can only be collected during daylight hours, and in countries where the weather is unreliable, an alternative heating system has to be included.

However, many scientists are optimistic that new ways of generating large amounts of energy will be successfully developed, but at the same time they fear the consequences. If the world population goes on increasing at its present rate, we may, in fifty years’ time, be burning up so much energy that we would damage the earth’s atmosphere. By raising the temperature of the atmosphere,we could melt the Arctic and Antarctic ice-caps and change the pattern of vegetable and animal life throughout the world——a frightening possibility.

2 . There are some sounds most of us acknowledge are annoying — the chewing of chips, the low noise of air conditioning or a screaming baby. These noises, for many people, act as a mere inconvenience that can distract them from the task at hand. However, there are some amongst us who have a much more severe response to these noises. Has a noise ever made you feel so angry that you could explode with rage? If the answer is yes, you may be suffering from misophonia (恐音症).

The word “misophonia” literally means “a hatred of sound” and is sometimes called Selective Sound Sensitivity Syndrome. There are some experts who doubt the existence of the condition. However, for those who claim to suffer from it, the experience can be painful. Certain sounds could set off intense emotional or psychological responses that may seem over the top compared with a non-sufferer’s complaints.

The sound of people chewing their food could trigger sufferers’ anxiety, or make them feel panic. It may even activate their fight-or-flight response, making them want to run away. In extreme cases, that feeling of panic may result in intense anger and even end up expressing rage physically.

Sadly, there’s no known cure. But tinnitus retraining therapy, cognitive (认知的) behavioural therapy and counselling could help sufferers tolerate noises and manage the condition. According to James Cartreine, a clinical psychiatrist, the condition can lead to separation. Sufferers use coping strategies that include avoiding places with lots of noises, like restaurants, or moving away when they feel like raging against someone due to their breathing.

So, the next time you see someone fly into a rage because of a sound that is driving them crazy, it may be due to a difficult condition they are trying to manage, and not just because they hate a certain sound.

3 . In recent years, China has witnessed the growth of luxury (奢侈品) brands. In this market, Chinese consumers are now the largest spenders. It’s clear that a new generation of young, materialistic people is increasingly relying on luxury brands to improve its self-image. I am a fashionist too, at least in spirit — I love to look at clothes and shoes. But I don’t understand why people spend lots of money on designer labels. When a young woman buys a handbag that costs two months of her salary, that’s a scary thing.

What’s interesting is that scientists have found that having luxury things doesn’t lead to happiness. Study after study has shown that although we want material things, when we get them we don’t suddenly become “happy” people. In fact, a series of studies by Leaf Van Boven at the University of Colorado, US, has shown that individuals who spend money on travel and similar experiences get more pleasure than those who invest it in material things. That’s because experiences are more easily combined with a person’s identity. If I travel to Yunnan, that adventure affects how I think in the future. My memories become a part of me.

Moreover, as Van Boven has observed, young people who pursue happiness through “things” are liked less by their peers. People prefer those who pursue happiness through experiences.

It’s natural to want to express yourself through your appearance. So my advice is: create a look that isn’t tied to a designer label. Convey your own message. Take some lessons from the late Apple co-founder Steve Jobs. He was always in Levis jeans and a black turtleneck. Mark Zuckerberg, founder of Facebook, routinely appears in hoodies and sneakers. These people, successful people, have style. You don’t have to break the bank to send a message about who you are. Take a trip. Go out into the world. Then come back and confidently create your own signature look.

5 . People have many different ways to relax during break time at work or school. Smartphones are probably the number one choice for a quick mental vacation. Looking at your cellphone may damage your mental power, according to a recent psychological study from Rutgers University in the United States.

For the study, more than 400 students were asked to finish a set of 20 word puzzles. The students were divided into three groups. One group was allowed to take a break and use cellphones to buy things online. The second group was asked to have a rest and buy things using a computer. The last group didn't take any break at all.

Interestingly, the group that used their cellphones during the break went back to work feeling the most tired and least motivated to continue. They also had the hardest time solving the remaining word puzzles. The cellphone group took 19 percent longer to finish the rest of the task, and solved 22 percent fewer problems than those in the other break conditions combined.

Terri Kurtzberg, co-author of the study, explained that they assumed looking at cellphones during a break would be no different from any other break—but instead, the phone may cause increasing levels of distraction that make it difficult to return focused attention to work tasks.

“Cellphones may have this effect because even just seeing your phone activates thoughts of checking messages, connecting with people, access to ever-refilling information and more, in ways that are different from how we use other screens like computers, and laptops,” Kurtzberg told Science Daily.

So, during your next break, try putting your smartphone way. Go out for a walk, get to know your classmates or even take a nap. You may be surprised by the results!

7 . How many phone numbers can you remember by heart? It’s probably fewer than you would like. Actually, you are not alone. Out of more than 1,000 Americans who were surveyed, more than half said that they couldn’t recall the phone numbers of their friends and neighbors. In their eyes, there is no point in filling their heads with phone numbers if they are all stored in smart phones that are with them almost all the time.

In fact, most people are suffering from a sort of digital amnesia(健忘). more than 90% of those surveyed agreed that they used the Internet as an online of their brains. Rote memorization(死记硬背) was once an important part of modern education, but we just need a click or slide now. That’s making us worse at remembering things.

Researchers found that when people expected to use the information online, they were less likely to remember actual facts, but more likely to remember how to find them. As a result, we are already becoming ones with our computer tools, growing into interconnected systems that remember less by knowing information than by knowing where the information can be found.

However, some believe it isn’t necessarily a bad thing--maybe it gives them more chances to think through things. We certainly acquire more knowledge now than ever, even if it isn’t all stored in our brains.

Even so, I still believe that there are more risks to this new world of memory beyond losing our ability to recall some information such as who the 15^th President was. That kind of information may always be a click away, but the important things are personal ones, like the way your parents smiled at your wedding. It’s harder to recall or find online. If you’re relying on yourself to keep track of those memories, they will be much more meaningful.

8 . How was 2019 for you? Was it pleasant and full of joy? Or was it unpleasant and full of sadness? Either way, some good things happened this year that can warm your heart. Let's take a look.

9 . You get anxious if there’s no wi-fi in the hotel or mobile phone signal up the mountain. You feel upset if your phone is getting low on power, and you secretly worry things will go wrong at work if you’re not there. All these can be called “always on” stress caused by smart phone addiction.

For some people, smart phones have liberated them from the nine-to-five work. Flexible working has given them more autonomy（自主权）in their working lives and enabled them to spend more time with their friends and families. For many others though, smart phones have become tyrants（暴君）in their pockets, never allowing them to turn them off, relax and recharge their batteries.

Pittsburgh-based developer Kevin Holesh was worried about how much he was ignoring his family and friends in favour of his iPhone. So he developed an app — Moment — to monitor his usage. The app enables users to see how much time they’re spending on the device and set up warnings if the usage limits are breached（突破）. “Moment’s goal is to promote balance in your life,” his website explains. “Some time on your phone, some time off it enjoying your loving family and friends around you.”

Dr. Christine Grant, an occupational（职业的）psychologist at Coventry University, said, “The effects of this ‘always on’ culture are that your mind is never resting, and you’re not giving your body time to recover, so you’re always stressed. And the more tired and stressed we get, the more mistakes we make. Physical and mental health can suffer.”

And as the number of connected smart phones is increasing, so is the amount of data. This is leading to a sort of decision paralysis（瘫痪）and is creating more stress in the workplace because people have to receive a broader range of data and communications which are often difficult to manage. “It actually makes it more difficult to make decisions and many do less because they’re controlled by it all and feel they can never escape the office,” said Dr. Christine Grant.

10 . In colleges around the country, most students are also workers.

The reality of college can be pretty different from the images presented in movies and television. Instead of the students who wake up late, party all the time, and study only before exams, many colleges are full of students with pressing schedules of not just classes and activities, but real jobs, too.

This isn't a temporary phenomenon. The share of working students has been on the rise since the 1970s, and one-fifth of students work year round. About one-quarter of those who work while attending school have both a full-course load and a full-time job. The arrangement can help pay for tuition (学费) and living costs, obviously. And there's value in it beyond the direct cause: such jobs can also be critical for developing important professional and social skills that make it easier to land a job after graduation. With many employers looking for students with already-developed skill sets, on-the-job training while in college can be the best way to ensure a job later on.

But it's not all upside. Even full-time work may not completely cover the cost of tuition and living expenses. The study notes that if a student worked a full-time job at the federal minimum wage, they would earn just over $15,000 each year, certainly not enough to pay for tuition, room, and board at many colleges without some serious financial aid. That means that though they're sacrificing time away from the classroom, many working students will still graduate with at least some debt. And working full time can reduce the chance that students will graduate at all, by cutting into the time available for studying and attending classes.

There is little reward for attending but not finishing college. Students who wind up leaving school because of difficulty in managing work and class are likely to find themselves stuck in some of the same jobs they might have gotten if they hadn't gone at all. The difficulty of working too much while in school can create a cycle that pushes students further into debt without receiving any of the financial or career benefits.