Why can you look at an object in the real world and see it as a three-dimensional (三维的) object, but if you see that same object on a television, it looks flat? What' s going on, and how does 3-D technology get around the problem? It all has to do with the way we see objects. When the light that travels to an object is sent back to our eyes, our brains understand the light and make up a picture in our minds. When an object is far away, the light travelling to one eye is parallel(平行的) with the light travelling to the other eye. But as an object gets closer, the lines are no longer parallel—they move toward the same point where they join. You can see this effect if you try to look at something right in front of your nose—you'll get a lovely cross-eyed expression. When you look at an object, your brain measures the effort your eyes make to focus on the object as well as how much they had to gather the light to the same point. Together, this information allows you to guess how far away the object is. If your eyes had to gather the light with quite a big effort, then it stands to reason that the object is close to you. The secret to 3-D television and films is that by wearing a special pair of glasses and by showing each eye the same picture in two different places, you can make your brain think that the flat picture you' re seeing has depth. But this actually doesn't match up the way we see real objects. While your eyes may gather two images(形象) that seem to be one object right in front of you, they' re actually focusing on pictures further away. This is why your eyes get very tired if you try to watch too many 3-D movies in one sitting.

Where did Tom get the idea of becoming a businessman?

What is the purpose of the woman' s talk?

In my time here at Carleton College, I've picked up many valuable pieces of advice from others, and have come up with a few of my own. With my time here drawing to a close, here' s two of the most valuable ones I wish I had known as a freshman (一年级学生). First, don't expect to join all the clubs here. Taking part in them is good, but the workload here is too heavy and time with your friends is too limited to devote yourself to a million and one clubs. Find a couple of things you dig, and you' 11 find yourself much happier than if you had spent your time joining every single organization that sounds somewhat interesting to you. Also, don't always think of your free time in terms of organizations you can join. Getting really good at something—an instrument(乐器), creative writing, cooking—is just as good a use of your free time, even if it might never be taken into any resume (简历). Second, when Socrates said "Know Yourself", he was talking about your sleep schedule. You can fool yourself into thinking that an 8: 30 a. m. class in the winter is the perfect way to get your day started, but you soon may find yourself emailing the teacher with excuses for being absent. Scheduling all your classes afternoon is sometimes equally deadly; you might just end up going out the night before knowing you can safely sleep in. I've found that the way to take classes is to load them in the middle of the day, nothing before 9: 50 a. m., nothing after 3:10 p. m.

阅读下面的对话，根据其内容写一篇有关一起交通事故的记叙文。要求：1．所写短文应与对话相关内容意义相符，涵盖其要点。2．用你自己的语言来表达，可以改写对话中的句子，但不可以照抄原句。注意：词数80词左右。Mark: Anything interesting in the news?Linda: Nothing much, just the same old things about politics and celebrity gossip. But there was an accident yesterday on Broad Street. Mark: What happened?Linda: A car knocked down the roadside barrier and then run into a tree. Mark: How come? Was the driver drunk? Linda: No, he wasn't. Mark: Was he speeding then? Linda: No. Mark: That' s curious. Then why did he lose control of the car? Linda: Because the truck right in front, which was loaded with large boxes, suddenly dropped a box onto the ground. Trying to avoid hitting the box, the driver turned left sharply, which was lucky, because there are five or six people on the side walk on the right. Mark: Oh! That was scary. Was the driver hurt? Linda: Yes, but not badly. Witnesses called the police and the driver was brought to the hospital. He suffered from some bruises but otherwise, he's Okay. Mark: What a lucky escape! Linda: Yes, it was really dangerous. And the police are still trying to find out who should be responsible for the accident. Mark: I just hope it won' t happen again.

假设你是李明，正在英国牛津大学参加短期语言培训，计划星期天去伦敦旅游。你在互联网上看到了一则广告如下： Places to visit：Big Ben，London Eye，Buckingham Palace Transport：Bus Price：￡45 Start—time：6：30 a．m． Pick-up：Anywhere in Oxford For information，contact： Tel：01865—783279 E—mail：C Travel@service．uk 如果你还有一些具体信息要咨询，请给旅行社发一封电子邮件，询问有关情况。要点： 是否有学生票价； 费用是否含景点门票、午餐； 去牛津的时间。 参考词汇：牛津：Oxford 费用：fee 门票价钱：entrance fees 注意：词数80词左右。

It was________lovely weather that the boys all went swimming.

When is their flight?

Urbanization Until relatively recently, the vast majority of human beings lived and died without ever seeing a city. The first city was probably founded no more than 5,500 years ago.【B1】______ In fact, nearly everyone lived on farms or in tiny rural (乡村的) villages. It was not until the 20th century that Great Britain became the first urban society in history—a society in which the majority of people live in cities and do not farm for a living. Britain was only the beginning.【B2】______ The process of urbanization—the migration (迁徙) of people from the countryside to the city—was the result of modernization, which has rapidly transformed how people live and where they live. In 1990, fewer than 40% of Americans lived in urban areas. Today, over 82% of Americans live in cities. Only about 2% live on farms.【B3】______ Large cities were impossible until agriculture became industrialized. Even in advanced agricultural societies, it took about ninety-five people on farms to feed five people in cities.【B4】______ Until modern times, those living in cities were mainly the ruling elite (精英) and the servants, laborers and professionals who served them. Cities survived by taxing farmers and were limited in size by the amount of surplus food that the rural population produced and by the ability to move this surplus from farm to city. Over the past two centuries, the Industrial Revolution has broken this balance between the city and the country.【B5】______ Today, instead of needing ninety-five farmers to feed five city people, one American farmer is able to feed more than a hundred non-farmers.[A] That kept cities very small.[B] The rest live in small towns.[C] The effects of urban living on people should be considered.[D] Soon many other industrial nations became urban societies.[E] But even 200 years ago, only a few people could live in cities.[F] Modernization drew people to the cities and made farmers more productive.[G] Modern cities have destroyed social relations and the health of human beings.

After the argument Colin ran away and________since.

Where does the conversation take place?

Maggie is________about her tea, and often carries her favourite tea with her in her hand-bag.

假定你是第一中学学生会主席李明，负责与下月来校访问的英国中学生代表团联系，请根据以下要点写一封电子邮件，告知英方团长史密斯先生有关活动和安排。要点：1．欢迎会；2．参观校园、双方学生座谈；3．晚宴、联欢。注意：1．词数80词左右；2．请将电子邮件直接写在答题卡上的相应位置。

The Pyramids of Egypt were built more than three thousand years ago, and no one knows ______.

It was a sunny day. A little boy's father was sitting on the couch, drinking a beer while watching【K1】______ basketball match. Seeing this, the boy rushed to his father and shouted," Daddy, show me how to play catch !" The father, staring【K2】______ the television screen, replied, " Let me finish watching the match. Play outside and come back in five minutes. " "Okay, Daddy!" said the boy, running out of the room. Five minutes later, the boy returned【K3】______ (scream), "Daddy, Let' s play catch now!" By this time, the father had opened another cold beer and another match was beginning.【K4】______ (patient) with the boy's interruption, the dad brought a magazine to his son. On the cover of the magazine was a large picture of the world. The father, who was angry and【K5】______ (bother) , began tearing the magazine cover into small【K6】______ . Then, the father turned to his boy and said," Son, once you put this picture back together, we can play catch, but do not interrupt me again【K7】______ you finish. " A few minutes later, the boy returned and said, " I have finished, Daddy! Can we play catch now?"【K8】______ (surprise) , the father glanced towards his child, and【K9】______ lay the magazine with the world pieced perfectly together in his small hands. The dad asked his child how he put the world together so quickly. "【K10】______ was simple," said the boy. "On the back of the world was the picture of a person, and once I put the person together, that's when the world came together."

I'll be in________next room, so give me________call if you need any help.

When I was a little girl, every time my dad was repairing something, he【K1】______ ask me to hold the hammer, and meanwhile, have a conversation with me. I never saw my dad drinking or taking a night out. All he did after work was taking care of his family. I grew up and left home for college and【K2】______ then, my dad had been calling me every Sunday morning, no matter what. Several years later I bought a house,【K3】______ my dad painted by himself for three days in the 80-degree summer heat. All he asked was【K4】______ me to talk to him. But I was always busy,【K5】______ (able) to find any time for conversation with him. One Sunday morning we had a telephone talk as usual. I noticed that my dad had forgotten some things we discussed lately. I was in a hurry, so our conversation was short. Later that day came a call【K6】______ (say) my father was in hospital. Immediately I bought a ticket for a flight and on my way I was thinking about all the【K7】______ (miss) occasions to have a talk with my dad. 【K8】______ the time I got to hospital, my father had passed away. Now it was【K9】______ who did not have time for a conversation with me. I realized【K10】______little I know about my dad, his deepest thoughts and dreams. After his death I learned more about him, and even more about myself.

What does the man want to order?

假定你是李华，毕业后准备去英国留学，现在想要寻找一个母语为英语的留学生练习口语，就此写一篇80词左右的短文。 要点： 1．找伙伴原因 2．对对方要求 3．自己能够给对方的帮助 注意：可适当增加细节使表达通畅。

假设你是王霞，计算机专业，即将毕业，现在想要申请去美国留学，就此写一封80词左右的英文申请信。要点： 1．简单的自我介绍 2．申请理由 注意：可以适当添加细节，以使行文连贯。