Sports are the base of my life, next to my mother who raised me when my dad left us. I have been into sports since I was six years old. I have known many coaches and heard hundreds of their tips, but they usually focused on drills to develop my skills and reach the next level of play.

    When I was in Senior Two, I met the new school basketball coach, Brian Pawloski. I thought I was certain to be selected for the school team since I had been in it the year before. I showed up to the tryouts and put out about 90% effort since I thought I'd make it with no problem. That was a big mistake.

    Brian Pawloski is the hardest-working coach I have ever met. He didn't expect 100% effort, he expected 200% effort. One example: he once made us do 40 suicide drills for the 40 lay-ups (投篮) we missed in a game. Some think this is crazy, but it isn't. After this conditioning practice, as we were getting a cup of cold water to drink, I said, "coach, that was the best practice I ever had." I was completely sincere. This man was and is the person who influenced me most at my high school. He expects us to be excellent not just on the court but in the classroom. If I am not working on basketball, I am reading a book that he thinks will help us better understand life's challenges, including Wooden, Coach, and The Screwtape Letters.

    In the first two years I slacked off, not putting forth my full potential. Now, unlike the coaches of my youth, this man was interested in how he did off the court. He always made sure I kept up with my studies and was able to be trusted. I can honestly say that on other coach has given me so much advice on how to succeed in basketball, but more importantly, in life. My school is lucky to have such a great person to teach, coach and influence their students. I will always remember my high-school basketball days as one of the hardest times I have ever worked in my life not only in basketball but in my growth as an individual.

    Traveling abroad for leisure is becoming more and more popular for Chinese. The UK is high up in the list of places that the Chinese want to visit. There is a sense of mystery about the UK: it's often the images of England's green parks, countryside and Victorian houses that people point to as an alternative to polluted, overcrowded cities such as Beijing and Guangzhou.

    The capital is viewed as modern and dynamic, while being filled deep with history. When asked what other images are thought of by the UK, the reply is often "the Queen, tea and Oxbridge". So what's stopping them actually coming? Sebastian Wood, the British ambassador in Beijing, has described the UK as a "fortress", and while this is perhaps an exaggeration (夸张), Britain does have a reputation as a country that is harder to access.

    The main problem for Chinese tourists is obvious. Although visa applications are now completed online, visitors are still required to visit one of 12 UK centers across the country for a face-to-face interview and fingerprinting. If you don't live near one of these centers already, you'd have to travel some distance to get there.

    Another problem is also to be mentioned. If travelers from China visit the UK, they also want to cover as much ground as possible. But the UK is not included in the Schengen visa, which allows access to a host of 26 European countries such as France and Germany. So it makes the former seem less worth it.

    There is also the issue of cost:￡47 for a Schengen visa, ￡82 for the UK. On top of this, the UK is viewed as stricter in its handling of visas compared with the rest of Europe, fed by urban legends of rejected applications. In the end, the decision comes down to one question: Is Britain worth a visit?

    "Opinion" is a word that is used carelessly today. It is used to refer to matters of taste, belief, and judgment. This inaccurate use would probably cause little confusion if people didn't attach too much importance to opinion. Unfortunately, most attach great importance to it. "I have as much right to my opinion as you to yours,'' and "Everyone's entitled to his opinion,'' are common expressions. In fact, anyone who would challenge another's opinion is likely to be branded intolerant.

    Is that label accurate? Is it intolerant to challenge another's opinion? It depends on what definition of opinion you have in mind. For example, you may ask a friend "What do you think of the new Ford cars?" And he may reply, "In my opinion, they're ugly." In this case, it would not only be intolerant to challenge his statement, but foolish. For it's obvious that by opinion he means his personal preference, a matter of taste. And as the old saying goes, "It's pointless to argue about matters of taste."

    But consider this very different use of the term. A newspaper reports that the Supreme Court has delivered its opinion in a controversial case. Obviously the justices did not share their personal preferences, their mere likes and dislikes. They stated their considered judgment, painstakingly arrived at after thorough inquiry and deliberation(审议).

    Most of what is referred to as opinion falls somewhere between these two extremes. It is not an expression of taste. Nor is it careful judgment. Yet it may contain elements of both. It is a view or belief more or less inaccurately arrived at, with or without examining the evidence.

    Is everyone entitled to his opinion? Of course, this is not only permitted, but guaranteed. We are free to act on our opinions only so long as, in doing so, we do not harm others.

    The values of artistic works, according to cultural relativism (相对主义), are simply reflections of local social and economic conditions. Such a view, however, fails to explain the ability of some works of art to excite the human mind across cultures and through centuries.

    History has witnessed the endless productions of Shakespearean plays in every major language of the world. It is never rare to find that Mozart packs Japanese concert halls, as Japanese painter Hiroshige does Paris galleries, Unique works of this kind are different from today's popular art, even if they began as works of popular art. They have set themselves apart in their timeless appeal and will probably be enjoyed for centuries into the future.

    In a 1757 essay, the philosopher David Hume argued that because "the general principles of taste are uniform (不变的) in human nature," the value of some works of art might be essentially permanent. He observed that Homer was still admired after two thousand years. Works of this type, he believed, spoke to deep and unvarying features of human nature and could continue to exist over centuries.

    Now researchers are applying scientific methods to the study of the universality of art. For example, evolutionary psychology is being used by literary scholars to explain the long-lasting themes and plot devices in fiction. The structures of musical pieces are now open to experimental analysis as never before. Research findings seem to indicate that the creation by a great artist is as permanent an achievement as the discovery by a great scientist.

Accines (疫苗) may soon make their first film appearance. Led by expert Maria A. Croyle, researchers have developed a thin sheet that preserves vaccines for long periods without refrigeration. This means the carefully cooled small bottles now used to ship vaccines could potentially be replaced by lightweight films that can be mailed in an envelope and stored on a shelf.

Croyle's laboratory began developing the technology in 2007. Inspired by amber's ability to preserve the DNA of insects, the researchers set out to create their own version of the substance by mixing "a lot of sugar and a little bit of salt, much like hard candy," Croyle explains. The vaccine-containing film is administered by mouth—sweet news for many who dislike needles.

The film is tailored to suit each specific vaccine candidate and provide a protective coating. "We've learned over time that the key to really stabilizing whatever the film holds is to have it intermixed with all the components," Croyle says, adding that the process is quick and uses affordable, standard equipment. "We really wanted to come up with something that would be transferable to developing countries."

Immunization(免疫) programs depend heavily on keeping vaccines cold(2℃-8℃) as they are transported, sometimes over thousands of kilometers to far-away locations. Delivery can be difficult and costly, and transport disruptions can cause the vaccines to be ineffective.

But this new product can store live viruses, bacteria and antibodies for several months at 20℃. In a paper published in Science Advances, the scientists show that the live viruses in one vaccine were preserved in the film even after 36 months. They also find that a flu vaccine suspended in their film compares favourably with a traditional flu shot(流感预防针). "The study demonstrates early proof of concept for an exciting platform for vaccine product development," says Lisa Rohan, a pharmacologist, who was not involved in the study. She also notes that each vaccine type would need a custom formulation(配方) for future stages of development.

Finding partners to mass-produce for clinical trials is the researchers' most pressing problem, Croyle says. They are also exploring packaging methods to keep their films stable up to 40℃.

Size is a major advantage—a letter-sized sheet of the film can carry more than 500 doses(剂) of vaccine, about 1⁄900 the weight of the same amount of traditional doses. By making it easier and cheaper to ship and preserve vaccines efficiently, Croyle says, the technology could vastly improve immunization rates the world over, particularly in middle- to low- income countries.

A City in the Jungle

In the summer of 1848, in Guatemala, a man called Ambrosio Tut went out into the jungle, as he did almost every day. Tut was a gum collector, looking for gum in the jungle. {#blank#}1{#/blank#}One day, he got to the top of one tree and something caught his eye. He looked out across the trees and saw the tops of some old buildings. 

{#blank#}2{#/blank#}He ran to tell the local governor excitedly, and together they walked into the jungle. There they found Tikal, the city that the Mayans had built many hundreds of years before. The two men saw pyramids, squares and houses. 

For a long time before that day, local people had known that somewhere in the jungle there was an old Mayan city. {#blank#}3{#/blank#}Between 200 and 900 AD, the city of Tikal had been the centre of Mayan civilisation(文明) in the area, but then the Mayans left it—nobody knows why!After 1000 AD, the jungle began to cover it. {#blank#}4{#/blank#}

Seven years before Tut found Tikal, two British explorers had gone to Guatemala and had written a report about Mayan treasures in the jungle—but they hadn't mentioned Tikal. Even earlier than this, local Indians had told people about a great city hidden in the trees, but no one had listened to them. {#blank#}5{#/blank#} Now the lost city had been found again, and people went there immediately to see it. 

A. But no one had seen it for centuries. 

B. To do this, he had to climb the trees. 

C. And then people forgot that it was there. 

D. So they lost the chance to find the treasure. 

E. Tut found many other treasures after that. 

F. More and more scientists began to study the Mayan city. 

G. Tut didn't really know what he had seen but he knew it was something special.