1 . My teacher held up a piece of broken glass and asked, “Who broke this window?”

Thirty boys tried to think about not only what they had done, but also what the teacher might have found out. She seldom became angry, but she was this time.

“Oh,” I thought. I was the one who broke the window. It was caused by a naughty throw of a baseball. If I admitted guilt, I would be in a lot of trouble. How would I be able to pay for a big window like that? I didn’t even get an allowance. “My father is going to have a fit as a result of it,” I thought. I didn’t want to raise my hand, but some force much stronger than I was pulled it skyward (朝向天空). I told the truth, “I did it.” It was hard enough to say what I had done.

My teacher took down a book from one of our library shelves and I had never known my teacher to strike a student, but I feared she was going to start with me.

“I know how much you like birds,” she said as she stood looking down at my guilt-ridden face. “Here is the field guide about birds that you are constantly checking out. It is yours now. It’s time we got a new one for the school anyway. You will not be punished, but remember that I am not rewarding you for your misdeed (恶行), but I am rewarding you for your truthfulness.”

I couldn’t believe it! I wasn’t being punished and I was getting my own bird field guide — the very one that I had been saving up money to buy.

The lesson my teacher taught me stays with me every day, and it will echo forever.

2 . Back in the early 2000s, lots of people couldn’t have imagined life without alarm clocks, CD players, calendars, cameras, or lots of other devices. But along came the iPhone and other smartphones, and they took over the functions of dozens of things we used to think were essential.

The smartphone story could even be a model for fighting climate change; not because smartphones use a small part of the energy of all the things they replace - although they do-but because they represent a different approach to design in general. And that approach is to focus on function rather than form. That requires focusing on understanding the underlying problem，and then engineering a wide range of potential solutions. This approach could revolutionize how we think about energy efficiency.

Traditionally, improvements in energy efficiency have mostly focused on individual devices, which can be quite fruitful. But focusing on individual devices is like if Apple had spent effort inventing a better alarm clock, a better CD player, a better calendar, and a better camera. Now with an iPhone, we don’t need the standalone(独立运行的) devices at all, because it can function as all of them.

So when it comes to using energy efficiently, rather than just installing a more efficient heater，some people have focused instead on the desired function: staying warm. They designed and coated their house so well that they could get rid of their heater altogether, letting them heat their house with 99% less energy.

In the same way, rather than just making cars more efficient, what if we focus on the desired function-getting where we want when we want-and create an efficient transportation system where we can drive less or get rid of our personal cars entirely?

The most energy efficient car or heater is no car, or no heater, while still being able to get around and stay warm. In other words, it’s not thinking efficient, it’s thinking different.

3 . Love the way you walk

Listen carefully to the footsteps in the family home, and you can probably work out who is walking about. The features most commonly used to identify people are faces, voices and fingerprints. But the way they walk is also a giveaway.

Researchers have used video cameras and computers to analyze people’s gaits, and are now quite good at it. But translating such knowledge into a practical identification system can be tricky.   Cameras are often visible, are difficult to set up, require good lighting and may have their view blocked by other people. A team led by Dr. Ozanyan and Dr. Scully have been looking for a better way to recognize gait. Their answer: pressure-sensitive mats.

Such mats are nothing new. They have been a part of security system. But Ozanyan and Scully use a complicated version that can record the amount of pressure applied in different paces as someone walks across it. These measurements form a pattern unique to the walker. The researchers turned to an artificial-intelligence system to recognize such patterns, and it seemed to work. In a study in 2018, they tested the system on a database of footsteps of 127 people. They found its error rate in identifying who was a mere 0. 7%. And Scully says even without a database of footsteps to work with, the system can determine some’s sex and, with reasonable accuracy, a subject’s age.

One application of the mat-based gait-recognition system might be in health care, particularly for the elderly. A mat placed in a nursing home or an old person’s own residence could monitor changes in an individual’s gait that indicate certain illnesses. That would provide early warning of someone being at greater risk of falling over.

Gait analysis might also be used as a security measure in the workplace, monitoring access to restricted areas, such as parts of military bases, server farms or laboratories dealing with dangerous materials.

Perhaps the most interesting use of the mats, though, would be in public places, such as airports. For that to work, the footsteps of those to be recognized would need to have been stores in a database, which would be harder to arrange than the collection of photographs and fingerprints that existing airport security systems rely on. Many aircrew or preregistered frequent flyers would welcome anything that speeded up one of the most tiresome modern travel.

5 . The Tropical Paradise Holiday

Welcome to St. Anna, our tropical paradise just off the coast of Latin America. You can spend two weeks in our luxury four-star hotel. The cost of your flight is included in the holiday, and you can be picked up from your home by our special airport bus. On your arriving, our coach will be waiting to take you to the hotel. All flights leave from Heathrow on a Monday morning.

The Cowrie Hotel is built right on the beachfront, and many rooms have wonderful ocean views. If swimming and surfing are not enough for you, the hotel also offers horse rides on the island, and a discount membership of the golf club.

The Rain Forest Adventure Holiday

Every year Broughton holidays offer twelve days of unforgettable adventure in a tropical rain forest. You may have a choice of Borneo, Malaysia, Indonesia, or even to the greatest rain forest of them all, the mighty Amazonian forest.

You will fly to our special base camps at the edge of the forest, where you will be given five days of survival training, and talks on the local wildlife.

Then you take a bus into the forest. You will have to walk the final five miles to the camp sites to avoid disturbing the local ecology. All of the camp sites have been carefully built to cause the minimal amount of disturbance to the local wildlife.

Remember that these adventure holidays take you deep into the wilderness, and they are not suitable for families with young children. Also remember that no more than two dozen guests can stay at any camp at one time, so if you want to go on one of these very special holidays, you will need to book early!

7 . There is a song by the great Jamaican singer Bob Marley called So Much Trouble in The World. Marley understood that part of the reason why there are so many problems in the world is the lack of tolerance between people. The UN understands this too— that is why it made November 16th “International Day for Tolerance”.

But first, what is tolerance? According to French philosopher Voltaire, “Tolerance is the consequence of humanity. We are all formed of frailty (脆弱) and error; let us pardon each other’s fool— that is the first law of nature.”

Very often, people do not realize that they are intolerant. This is because intolerance has a lot to do with ignorance. For example, the UN’s campaign is in part about the treatment of females by males. But often, the behavior of men toward women is intolerant because men do not put themselves in the shoes of women.

It is worth thinking a little about the words “tolerance” and “intolerance”. Are they the best words to describe the evils of which we are speaking here? To agree to be “tolerant” of someone is not necessarily a very respectful thing. When someone is tolerated, it implies that there is something wrong with them.

Still, what Voltaire said stands: We humans are not perfect and this weakness is something that we all share. That is the reason we should be tolerant. It is a little like generosity. We can give things to another person, and we can also give our forgiveness.

8 . There came Bryan’s game time. He sat back on the sofa and began to _______. “Don’t let the video game turn you into a couch potato (电视迷).” Mom said. That didn’t distract Bryan and he _______his eyes on the flashing television screen.

Soon, Bryan’s _______began to hurt. He was having trouble moving his fingers. Bryan tried to stretch out his hands, _______it felt like his fingers just wanted to curl back around the controller. Bryan _______back into the couch. It was so comfortable that he felt like he was sinking deeper into the cushions (靠垫). He felt a little thirsty, but it would be too much trouble to get up and _______the game. Then Bryan thought about _______Mom had said. Was his body really becoming part of the couch? He tried to concentrate_______his back and legs to feel where his body ended and the couch began, but he _______ feel much of anything at all.

Bryan looked down at his hands. They felt stiff now, and it seemed like they were stuck around the controller. Bryan felt ________. Could he really be turning into a video game controller? Would he just disappear into the couch before supper? Suddenly, Bryan ________ the controller and made himself stand up. He reached his hands down to touch his toes. His body tingled (感到刺痛) as he moved.

Bryan ran to the kitchen to tell his mom what had happened. “Well, at least we know that video games haven’t ________your mind,” Mom said. She smiled, but Bryan still felt very serious. “I think I should take a break from video games and go outside ________,” said Bryan. And that was just what he did.

That day Bryan got a ________. It’s wise to play video games in an appropriate way. Otherwise a man will end up with a couch potato, or even, a ________of video games.

9 . Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than two million years ago. They made these tools by hitting one stone against another. In this way, they broke off pieces from one of the stones. These chips of stone were usually sharp on one side. People used them for cutting meat and skin from dead animals, and also for making other tools out of wood. Human beings needed to use tools because they did not have sharp teeth like other meat-eating animals, such as lions and tigers. Tools helped people to get food more easily.

Working with tools also helped to develop human intelligence. The human brain grew bigger, and human beings began to invent more and more tools and machines. The stone chip was one of the first tools that people used, and perhaps it is the most important. Some scientists say that it was the key to success of mankind.

Since 1960, a new kind of tool has appeared. This is the silicon chip (硅芯片). It is smaller than a finger nail, but it can store lots of information. It is an electronic brain. Every year these chips get clever, but their size gets smaller, and their cost gets less. They are used in watches, calculators and intelligent machines that we can use in many ways. In the future we will not need to work with tools in the old way. Machines will do everything for us. People will have plenty of spare time. But what will they do with it?

Human beings used stone chips for more than two million years, but human life changed very little in that time. But now life is changing faster every day. What will life be like twenty years from now? What will the world be like two million years from now?

10 . The Intelligent Transport team at Newcastle University have turned an electric car into a mobile laboratory named “Drive LAB” in order to understand the challenges faced by older drivers and to discover where the key stress points are.

Research shows that giving up driving is one of the key reasons for a fall in health and well-being among older people, leading to them becoming more isolated and inactive.

Led by Professor Phil Blythe, the Newcastle team are developing in-vehicle technologies for older drivers which they hope could help them to continue driving into later life.

These include custom-made navigation (导航) tools, night vision systems and intelligent speed adaptations. Phil Blythe explains: “For many older people, particularly those living alone or in the country driving is important for keeping their independence, giving them the freedom to get out and about without having to rely on others.”

“But we all have to accept that as we get older our reactions slow down and this often results in people avoiding any potentially challenging driving conditions and losing confidence in their driving skills. The result is that people stop driving before they really need to.”

Dr Amy Guo, the leading researcher on the older driver study, explains, “The Drive LAB is helping us to understand what the key stress points and difficulties are for older drivers and how we might use technology to solve these problems.”

“For example, most of us would expect older drivers always go slower than everyone else but surprisingly, we found that in 30mph zones they struggled to keep at a constant speed and so were more likely to break the speed limit and be at risk of getting fined. We’re looking at the benefits of systems which control their speed as a way of preventing that.”

“We hope that our work will help with technological solutions to ensure that older drivers stay safer behind the wheel.”