（特别提示：要使用标准符号进行修改，否则不给分。每一行的错误都要写在行下，写在行上的不给分。）

Dear Ken,

    I am very exciting to learn that you're coming to Beijing for the Olympics. Both my parent miss you a lot. So do our friend, Cathy. August is the best time of the year to visit Beijing, because of there is only a few rain and the weather is neither too hot or too cold. There are so many places I want to take you after I finish my work like a volunteer. When you come, you can stay with ourselves. My home is about three kilometers away from the National Stadium, knowing as the “Bird's Nest”, where opening ceremony will be held.

Best regards,

Janet

What is an accent? An accent is a flavoring to your speech that influences the sounds of words and sentences. In Birmingham you might hear "lake" sounding close to "like", and In Ireland you might hear "this" sounding close to "diss".

Accents are related to social groups: Birmingham, say, or upper class. Everyone has an accent, and no one is accent-free. And for every accent there are groups of people who react badly to it. These reactions are the result of prejudice —an unreasoned jumping to conclusions.

Everybody has prejudices about accents. I certainly do. I have held prejudices about other people's accents. But over the decades, my experience of working with people from a wide range of backgrounds has led me to give up these prejudices. However, I still have prejudices that I find difficult to control.

Academics tell us that no accent is superior to any other. But the reality is that the wider world likes the idea of simple rules which tell us what is right and wrong. We like to judge our colleagues on the basis of these rules. If you break these rules, you are somehow to blame.

Jacob, Member of Parliament, remembers when he first stood unsuccessfully for election in Fife, Scotland, "I gradually realized that whatever I happened to be speaking about, the number of voters in my favor dropped as soon as I opened my mouth."

And some people change their accents to sound more refined (文雅的) when talking to people outside their immediate circle of family and friends.

Sky News ran a report recently in which an 18-year-old woman was trying to sound less posh (上等人的), that is speaking non-standard English, because she didn't like random people telling her that she must be rich and from a privileged background.

Lastly, it's worth being reminded that people can have an accent and still be recognized.

—I can't agree more. After all，people's health is the most important thing of all. （   ）

    Julian Beever is a well-known British artist. His drawings have appeared on the streets of London, Paris, Tokyo, New York and many other cities around the world. Beever creates what looks like a three-dimensional design (三维设计). From animals to heroes to buildings, the paintings are wonders for our eyes to see.

    In his book Pavement Chalk Artist, Beever shares some of his most attractive and humorous pieces. Here are the examples you will find in the book.

    Philadelphia Eagle, created in the USA, is a huge drawing with an eagle (鹰) landing on an American national flag. Meeting Mr. Frog was created in Spain and is about a realistic- looking (样子逼真的) frog sitting on a lily pad (睡莲叶子). Swimming Pool in the High Street is about a woman relaxing in a swimming pool sinking into the middle of the street.

    Along with an introduction about his background, Beever shares information about his time at home in the UK and abroad. With a fun story coming after each piece of art, this 112- page book is really worth another look.

    Last week the electricity in my flat went out. My typical evening is spent watching TV and scrolling (滚动) through social media. Tonight this wasn't possible. My roommate and I weren't prepared with candles and matches. We just rely on electricity.

    So for me it was an early night. That night, losing our electricity felt like losing a basic necessity, as basic as running water. But really, electricity is a luxury that we've grown to take for granted. I use electricity all the time, even when it's not really necessary.

     And as I'm writing this, I have my lights on, even in the middle of the day when I don't really need them.

    It contributes to global warming. It is harming our environment and we need to do what we can to stop it. Not only that, but if we continue to use the same large amount of energy, we will soon run out of it.

    How would we survive in a world without electricity? Our daily lives go around it. We wouldn't be able to function.So, shouldn't we start preparing for it now? Cutting down on our use of electricity would save energy resources so that they could last for longer. And if everyone does it, we can make a big difference.

A. Yet we know one day we will run out of it.

B. Our over-use of electricity is a big problem.

C. This left me in complete darkness the whole night.

D. It is a real problem to cut down on the use of electricity.

E. I know for sure I could cut down on my use of electricity.

F. I couldn't help but think, do we rely too much on electricity?

G. I turn on the TV in the background even when Tm not watching it.

    Self-driving vehicles have been proposed as a solution for the rapidly increasing number of fatal traffic accidents, which now cause 1.3 million deaths each year.

    While we have made great progress in advancing self-driving technology, we have yet to explore how autonomous vehicles will be programmed to deal with situations that endanger human life, according to a new study published in Frontiers in Behavioral Neuroscience.

    To understand how self-driving cars might make these judgments, the researchers looked at how humans deal with similar driving dilemmas.

    When faced with driving dilemmas, people show a high willingness to sacrifice themselves for others, make decisions based on the victim's age and turn onto sidewalks to minimize the number of lives lost. Ethical（伦理的）guidelines tend to disagree with human instincts（本能） in this case, saying that no life should be valued above another.

    “The technological advancement and adoption of autonomous vehicles are moving quickly but the social and ethical discussions about their behavior are lagging behind,” says lead author Lasse T. Bergmann from University of Osnabrück, Germany.

    Automated vehicles will eventually outperform their human counterparts, but there will still be circumstances where the cars must make an ethical decision to save or possibly risk losing a human life.

    The study is especially relevant considering earlier this year a self-driving Uber car struck and killed a passenger in Arizona, in an incident widely regarded as the first death resulting from an autonomous vehicle.

    An ethics commission launched by the German Ministry for Transportation has created a set of guidelines, representing its members' best judgement on a variety of issues concerning self-driving cars. These expert judgments may, however, not reflect human instinct.

    Bergmann and colleagues developed a virtual reality experiment to examine human instinct in a variety of possible driving situations. It was based on the well-known ethical thought experiment—the trolley problem.

    In this experiment, there is a trolley running down the railway tracks. Ahead, on the tracks, there are five people tied up, unable to move, and the trolley is headed straight for them. A person is standing some distance off in the train yard, next to a lever（操作杆）.If he pulls this lever, the trolley will turn to a different set of tracks. However, there is one person tied up on the side track. Does the person choose to pull the lever and kill one person, or do nothing and let five people die?

    Bergmann recognized that the majority of people would not approve of the proposal made by the ethics commission that a passenger in the vehicle should not be sacrificed to save more people. “We find people chose to save more lives, even if this involves turning onto the sidewalk, endangering people uninvolved in the traffic incident,” said Bergmann, “Furthermore, subjects considered the factor of age, for example, choosing to save children over the elderly.” He also realized further discussion and research were needed. “Driving requires a complex weighing of risks versus rewards, for example, speed versus the danger of a critical situation,” Bergmann explained.

In my childhood, there were no smart phones or computers. Still, I never felt bored. The field, hills and woodlands around my home were the perfect playground. I can remember once hiking to a nearby 1 and walking slowly around it At the back of it, I was amazed to find an old dirt road that I had never seen before. It was full of muddy tyre tracks and deep woods bordered it on both sides, but 2 it still seemed like a fine adventure.

I walked on and on for what seemed like hours, I was sure someone was 3 in my ears to ask me to turn around and 4 back home but I was stubborn and even a bit stupid, so I walked on. There was still neither a car nor a house 5. My legs were getting tired. I noticed that the sun was starting to go down and I grew 6. I didn't want to end up 7 on this road in the dark night t and I was worried that it would be dark 8 I could make my way back to the lake again.

I continued to walk on with the fear growing inside of me. My heart was 9 and my legs were aching. When I 10 one last comer and 11 my house, I jumped up and down and laughed out loud. I knew the way home! It was still over a mile away, but legs felt like feathers. I 12 into the house with a big smile just in time for dinner. Then I ended my adventure with a good night's sleep.

I remembered this recently when I saw a sign that said, "All roads lead home." This is true. I also remembered a sage (智者) compared life to a journey. Are we going to make this life a terrible 13 or are we going to make the life a joyful one? It 14 our own choice.

All roads, no matter how they twist and turn, can 15 us home in our hearts. May you always walk your path with love! May you always help your fellow travelers along the way!