仔细阅读下列短文, 根据题目, 选出最佳选项. Today there are 6 billion people on the earth. By the year 2050 there may be 12.5 billion. There are a lot of people to feed. We need more food. One way to produce more food is by growing stronger plants. For thousands of years, farmers have made plants better. Every season, they pick the best plants for the next season. It works very slowly. Since 1983, scientists have been able to change plants more quickly by changing their genetic material(遗传物质). Foods from plants grown in this way are called genetically modified foods(转基因食品), or GM foods. By changing the genetic material of a plant, it is possible to make new plants. They make plants which are strong against plant diseases. They can also help in our diseases: a kind of rice is being prepared(准备), for example, which stops people from becoming blind. Rich countries produce GM foods because they are easy to grow and bring in more money. Poor countries are interested in them because they help produce more food. GM plants are not natural. No one knows whether good or bad they are. Making GM foods is only one way of feeding people in 2050. There are strong feelings against them, because they are unnatural. They may feed people, then hurt them or their children later. But, both rich and poor countries are very interested in their use, and they are not going to go away. In 2050 we may think differently about them.

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仔细阅读下列短文, 根据题目, 选出最佳选项. A month ago I had no idea that on a Saturday afternoon in November I would be hanging 39 meters above the ground and enjoying it. Now I looked down on the river far below me, and realized why people like rock-climbing. My friend Matt and I arrived at the Activity Centre on Friday evening. The accommodation(食宿) wasn't wonderful, but we had everything we needed——beds, food and so on. And we were pleased to be out of the city in the fresh air. On Saturday morning we met the other ten members of our group. Cameron had come along with two friends, Kevin and Simon, while sisters Carole and Lynn had come with Amada. We had come from different places and none of us knew the area. We knew we were going to spend the weekend outdoors, but none of us was sure exactly how. Half of us spent the morning caving(钻山洞) while the others went rock-climbing and then we changed at lunchtime. Matt and I went to the cave first. Climbing out was harder than going in, but after a good deal of pushing, we went out at last梒overed with mud(泥浆) but pleased and excited by what we had done.

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仔细阅读下列短文, 根据题目, 选出最佳选项. People at home keep asking me, "Is it hard to learn Chinese Why have you learned it so well " Well, there's one thing that makes Chinese easy to learn: there are so many people to talk to. You've probably heard that it's the most spoken language. Today it's also one of the most written languages online. And with so many Chinese people interested in learning English, it couldn't be easier to find a friend for language learning. You just have to know where to look for them. The really good place to look for them is QQ. QQ has the same status (地位) in China as AIM (AOL Instant Messenger) does in the US. It is reported that at any moment, up to 9,000,000 people are using QQ. They're at work, or in a web café (网吧), or at home, and the information of the users can be found. If you sign on with your address set to "abroad", you'll soon find that many thousands of them are interested in speaking to you! This is a great way for you to learn Chinese, and for them to learn English. I think that it's a very interesting way of cultural contact (文化交流), too, for ordinary people from around the world to be able to have one-on-one contact.

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仔细阅读下列短文, 根据题目, 选出最佳选项. No one wants to look silly or do the wrong thing at a new job. It is important to make the right impression(印象)from the very first day. You will face new people. You will be in a new place. It may be difficult to know what to do. Here are five tips to help you make it through the first day at a new job: First impression can last forever. Make sure you make a good one. Before your first day, find out if your new job has a dress code(rules about what you can wear to work). If so, be sure to follow it. No matter what, always be neat and clean. Get to work on time. Give yourself an extra 15 minutes to make sure you arrive on time. Pay attention to introductions. One of the first things that your supervisor may do is to introduce you to co-workers. These co-workers will be important to you. They are the ones who will answer your questions when the boss is not around. Ask plenty of questions. Make sure that your supervisor has told you what is expected of you. If he or she has not told you your duties, ask for a list. Set daily and weekly goals for yourself. Never be the first one to leave. Observe(观察) what your co-workers do around quitting time(下班时间). It does not look good for you to be eager to leave.

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仔细阅读下列短文, 根据题目, 选出最佳选项. Visit Dongqian Lake ZooCome and see big elephants from Yunnan and tigers the northeast. The African giraffes are waiting for you. Clever monkeys are going to make you laugh. A lot of other animals you have never seen are waiting to meet you. Tickets　　 Grown-ups: ￥80　　 Children: ￥40　　 Under Six: Free　　 From Monday to Friday: 8: 30a. m. ?: 30 p. m.　　 Saturday and Sunday: 8: 00 a. m. ?: 30 p. m. Keep the zoo clean. Do not feed or go near to the animals.

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仔细阅读下列短文, 根据题目, 选出最佳选项. Jack Brown, an office worker, lives in Washington. He inherited (继承) a million dollars when he was 23, but he wasn't happy at all. When his college friends were looking for their jobs, he didn't have to. Jack decided to living a simple life like everyone else. He gave \$l0,000 of his money to a charity (慈善机构) to help poor children live a better life. Today he is 36. He still wears cheap shoes and clothes and drives a small car only, but he is very happy. Up to now Jack has helped some children from poor countries all over the world, by sending them each \$200 a mouth. The money was used for the children's study, food, medicine and clothing. Jack receives a report each year on the children's progress (进步). They can write to each other, but usually the children do not speak English. When Jack first heard about these children, he wanted to help them. "It was nothing special," he said. "Until I went to these countries and met the children I was helping, I didn't know anything about their life. " Once Jack went to meet a little girl in Africa. He said that the meeting was very exciting. "When I met her. I felt very, very happy. " he said. "Ana I saw that the money was used for a good cause. It brought me happiness. I want to do everything I can to go on helping those children. "

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仔细阅读下列短文, 根据题目, 选出最佳选项. What are you going to do if you are in a burning house How will you escape Do you know how to save yourself Please read the following passage. Escaping a fire is a serious matter. Knowing what to do during a fire can save your life. It is important to know the ways you can use and show them to everyone in the family, such as stairways and fire escapes, but not lifts. From the lower floors of the buildings, escaping through windows is possible, learn the best way of leaving by windows with the least chance of serious injury. The second floor windows is usually not very high from the ground. An average(平均高度的) person, hanging by the finger-tips will have a drop of about six feet to the ground. It is about the height of an average man. Of course, it is safer to jump a short way than to stay in a burning building. Windows are also useful when you are waiting for help. Be sure to keep the door closed. Or smoke and fire may be drawn into the room. Keep your head low at the window to be sure you get fresh air rather than smoke that may have leaked(渗) into the room. On a second or third floor, the best windows for escape are these which open onto a roof. From the roof a person can drop to the ground more safely. Dropping onto cement(水泥) might end in injury. Bushes(灌木丛) and grass can help to break a fall.

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仔细阅读下列短文, 根据题目, 选出最佳选项. There are many things we need to know that we do not learn at school. For example, if we want to use our money wisely, we need to shop carefully. We need to know how to compare(比较) the prices of things in different shops. We need to be able to compare the quality of different brands(品牌). We need to know how to make a choice(选择) when we shop. Knowing how to make such choices is a "life skill", and we need these skills if we are to live useful and happy lives. Some of these choices are small. For example, will I take an apple for lunch or a pear Will I go to school by bus or on foot Will I wear the red T-shirt or the blue one to the movies Other choices are more important. For example, will I eat healthy food for lunch or will I eat junk food because it is tastier Will I work hard in all my classes or will I only work hard in the classes I enjoy We make choices like this every day. We have to realize that the choices we make can affect(影响) the rest of our lives. Just as importantly, our choices can also affect other people. The next time you decide to waste time in class, play a joke on someone or talk loudly at the movies, think about this: Who else does your choice affect

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仔细阅读下列短文, 根据题目, 选出最佳选项. It was the final examination for physics at the college. The examination was two hours long, and exam papers were given. The professor(教授) was very strict and told the class that any exam paper which was not on his desk in two hours would be refused and the student would fail. A half hour into the exam, a student came rushing in and asked the professor for an exam paper. "You're not going to have time to finish this," the professor said slowly as he gave the student a paper. "Yes, I will," answered the student. He then took a seat and began writing. After two hours, the professor began to call for the exam papers, and the students stood up and put them on the professor' s desk, all except the late student, who continued writing. A half hour later, the last student came up to the professor who was sitting at his desk and busy writing something. He tried to put his exam paper on the stack(摞) of the other papers already there. "No, you can't, I'm not going to take that in. It's late. " The student became worried. He thought for a while, then he asked the professor in a low voice, "Do you know WHO I am " "No, surely I don't," answered the professor. "DO YOU KNOW WHO I AM " The student asked again. "No, and I don't care," said the professor in a louder voice. "Good," answered the student, who quickly lifted the stack of exam papers, put his paper in the middle, and rushed out of the room.

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仔细阅读下列短文, 根据题目, 选出最佳选项. What do you usually use mobile phones for Sending text messages for fun Playing games Well, mobile phones can do far more than that. During this year's Asian tsunami(海啸), mobile phones saved many lives. People were using more than 10,000 international phones when the tsunami hit. Police sent text messages to them and found more than 2,000. But how They followed the signal(信号) and found out where the tourists were. So, how can something so small be so smart Well, here's how. When you turn the phone on, it tries to find a signal. This signal comes from the telephone network. When the phone is finding a signal, it also sends a message to the telephone network. This message tells the station where the phone is. When you start to make a phone call, the telephone network tells telecommunication(电信) offices where you are. The office will find out who you're calling, then put you through to your friend. When you start to talk, a device(装置) in the phone changes your voice into electric signals. These signals travel across the telephone network and reach your friend's phone. Then his phone changes the signals into your voice again. Finally, you can hear each other!

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