Q: How Does Your Body Keep the Same Temperature?        The temperature of your body should always be the same if you are fine, no matter whether the weather is hot or cold. That is why the doctor tests your temperature with a thermometer when you are sick. Normally, your  body temperature is ninety-eight point six degrees Fahrenheit  . If it is higher than that, it is a sure sign that something is wrong with your body.        Your body keeps the same temperature all the time, because it balances   the heat it produces and the heat it gives off. It is always burning up food and producing heat. It can produce heat faster when the body needs or give off heat faster when the body becomes too warm. Let's see how this works.        The heat of your body is given off chiefly through the skin. When you feel cold, your skin is tight and shows "goose flesh". When you feel chilly  , you must jump around to keep warm. Then your muscles begin to work, burn up fuel and produce more heat. It is not pleasant to shiver so you usually prefer warming up by taking exercise, or put on more clothes to keep warm.        When you get warm, the skin is loose and soft. It is so supplied with blood that heat is given off rapidly. If you get too warm, you begin to sweat and more body heat is used in evaporating the moisture   in your body. In warm weather or warm rooms, you wear less clothing, so that heat can be given off freely. You prefer less exercise because your body is warm enough, and the extra heat produced by taking too much exercise makes you uncomfortable.        Now you see why you feel differently in different kinds of weather. In summer, when it is hot, you feel tired and lazy. You do not care to work or play, but enjoy lying down and doing nothing. When you get out of doors in winter, the cold air makes you feel lively. You want to run and play. How does the body keep the same temperature all the time? A) It balances the heat it gets and loses. B) It is always producing heat from food. C) It gives off the heat that the body produces. D) It stops producing heat when it needs to.
A: A


Q: The leaders of Russia and China vowed to support each other's fight against Muslim separatists and urged peaceful solutions in Iraq, during a meeting in Beijing's Great Hall of the People on December 2, 2002. Russian President Vladimir Put in and China's Jiang Zemin signed a joint declaration calling for a "multipolar world". His two - day visit comes shortly after the conclusion of the 16th Patry Cogress which elected the new CPC leadership. Put in said that Russia wants to "work hard" with the new generation of Chinese leaders. The Treaty of Good =" Neighbourliness" and Friendly Cooperation, signed in July last year, has provided a solid legal foundation for lasting friendship for generations to come, according to Jiang, "China and Russia will be good neighbours, friends and partners forever." The Russian Government, in return, said it would continue to give priority to relations with China in its foreign policies. Put in spoke on the morning of Dec. 3rd at Peking University and took questions from students on his understanding of Chinese literature, Russian reform and NATO enlargement. He said a growing number of young people in Russia are interested in Chinese literature and one of his daughters is learning Chinese. It is implied, in the sentence"Put in said that Russia wants to'work hard'with the new generation on Chinese leaders", that   _   . A) Russia will co - operate closely with China B) There are many differences between Russia and China C) Put in knew little of the new generation of Chinese leaders D) It will be long before Put in gets to know the new generation of Chinese leaders
A: A


Q: If you need any help in planning your future, call in at the Education and Careers Expo  , which opened at the City Convention and Exhibition Centre yesterday. Expo gives you a unique opportunity to meet leading industrialists and educators. I spoke to several young people at Expo, and they all agreed how useful it was to have so much information under one roof. Duncan Kelly intends to take a university course in design after he leaves school. He was collecting some of the free literature when I spoke to him. "I'm not in a hurry to make a choice at the moment. I want to get all the information before I make up my mind." One feature of Expo is the careers seminars  , at which expert speakers outline their respective fields. Barbara Watts is already at university, in the second year of a law degree. She's decided to keep on studying after she graduates. She attended a seminar on international law. "The speaker was really good at getting across his message," said Barbara. "It was very helpful." But Expo isn't just for people who are still in education. It also offers help to those in employment, and to people who are considering retraining or a change of career. One advantage of Expo in that you can meet many prospective employers face to face, and talk to them frankly about your plans. As Charles Li told me, "Normally I wouldn't dare to go and talk to the manager of a company. But today I have talked to several managers. It's easy to meet them here, in a relaxed environment." He left school after Junior High and went to work in a factory to earn a living. He's looking at changing his career and perhaps tidying to be an accountant. The organizers expect over 200,000 young people to visit Expo, and there's no doubt that it's a bit of a squash  . But the opportunities available here certainly make up for any discomfort. So, if you need any help with your future, come along to Expo. You don't need a ticket. It's open today, Saturday and Sunday from 10 am to 7 pm, and entry is free to all. The interviewees at Expo all felt that_. A) the careers seminars were very successful B) meeting managers face to face was tense C) it was an honor to be able to learn from experts D) it was great to get all the information in one place
A: D


Q: When an NBA player is young he thinks he can win the championship by himself. It is only later when he has aged and been through many battles that he learns an important lesson: there is no "I " in "team". There is no better example of the value of teamwork than the Boston Celtics. Paul Pierce, Ray Allen and Kevin Garnett were all superstars on three different teams. Yet, none of them had any titles to show for it. Then, last season, they decided to sacrifice money and individual statistics to play together. Garnett and Allen joined Pierce on the Celtics and changed the NBA in the process. It started in simple ways. Garnett and Allen are two of the most intense athletes in the world. They treat every second of every practice like it is the NBA championship. If you want to play alongside them then you will have to do the same. So, the young guys on the Celtics started giving their full effort too. Pierce had been the star of the Celtics for many years. He used to shoot the ball many times a game. But with the addition of Allen and Garnett he shot less and focused on defense. His selflessness showed the young players that doing what made the team better was the only thing that mattered. When the Celtics were winning and the game was almost over, Garnett, Pierce and Allen would come out of the game. But they wouldn't just sit on the bench. Instead, they stood and cheered and screamed for their teammates. They wanted to support their friends and teammates. Now, the guys who don't play know they can still affect the game by cheering so they scream and cheer when Garnett, Allen and Pierce are playing. The Celtics have developed a strong relationship. They are more than just teammates. They are brothers. The result: the Boston Celtics won the championship and are considered the favorites to win the Eastern Conference championship again this year. There is a saying that goes, "A successful team beats with one heart." If that is the case, the Celtics may have the biggest heart in the NBA. Which of the following is NOT true about Pierce's recent performance? A) He became an even better shooter with others' help. B) He focused much more attention on defense. C) He created more chances for teammates. D) He stood and cheered for his teammates

A: A