user: (Question)
Read the following article and select the best answer. Article: "The British government will offer PS1,000,000 to anyone who can solve the world's biggest problem--whatever it might be," said Prime Minister  David Cameron at a science conference. In an unusual competition, the Government will ask people to find out the greatest challenge  today, such as finding a replacement  for oil, producing low cost food or curing AIDS/HIV. When the toughest problem has been decided, the Prime Minister will give away PS1,000,000 to the person who successfully works out the answer. The competition follows the example of the Longitude Prize started by the government in 1714, which offered PS20,000 (worth PS6,000,000 today) to anyone who could discover how far east or west ships had sailed. Sailors could work out their location north and south, and were able to decide their local time from the sun. However, they needed to know the time at a reference  point in order to find out how far they had travelled east or west. Many people thought the problem was impossible to solve, but the prize was finally won by John Harrison, an ordinary worker. He did this by designing a clock that kept accurate  time at sea and made it possible for sailors to work out their location.        Almost exactly 300 years on, Mr Cameron will have a group of scientists collect suggestions and draw up a short list of problems facing the world. He will then start a race to solve the most difficult problem. A government officer said, "We want people to think big: what does the world need and how can we achieve that? We are looking for the next penicillin , airplane or World Wide Web. Something that is going to really change what we do and how we live our lives--sending us ahead in the global race. "According to Mr Cameron, it is important to "encourage new ideas" and "attract back the best and the brightest" to Britain. Question: Which of the following is true according to the text? - John Harrison was sure that he would win the prize. - The million pound prize will go to a British scientist. - The British government pays special attention to the nation's creativity. - A replacement for oil is considered as the toughest problem by the scientists.
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The British government pays special attention to the nation's creativity.


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Read the following article and select the best answer. Article: This Thursday, across the USA, kids are skipping school  and going to work with their parents. They'll be making copies, sending faxes  and sweeping floors. This is because April 28 is Take Our Sons and Daughters to Work Day all over the USA. This holiday shows kids what it means to be a grown-up in the working world. I still remember when this day started, I was very happy. Not only did I have the chance to miss school, but I also got to sit in my dad's taxi all day long and we would go to a restaurant for lunch. But after only 20 minutes of driving around the city, I was very bored. couldn't read my book in the car as I would get carsick  and my dad didn't like to turn on the radio. I got hot and uncomfortable. People wouldn't get into his taxi because they thought he already had a passenger-me, so nothing happened. It seemed years before we went out for lunch. I actually started to miss school. While the point of the day is to give kids a chance to experience real-life jobs and give them an idea of the possibilities   for their futures, I got something completely different from the day. I learned to appreciate   school. Where else do you get to play with your friends, do science experiments, read great books and write stories all in one day? Just as you'll have to learn to love your job later in life, learn to love school now. If you don't already, try spending the day at work with your dad. Question: Which of the following is NOT the purpose of 'Take Our Sons and Daughters to Work Day'? - To teach kids to appreciate school. - To give kids a chance to experience real-life jobs. - To give kids an idea of the possibilities for their futures. - To show kids what it means to be adults in the working world.
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To teach kids to appreciate school.


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Read the following article and select the best answer. Article: Carbon monoxide poisoning   causes death and injuries around the world. This gas is a problem in all parts of the world that experience cold weather. A few years ago, America's Centers for Disease Control (C. D. C.) studied deaths linked   with carbon monoxide poisoning. It found that the number of carbon monoxide deaths in the United States was greatest in January. The C.D.C. also found that carbon monoxide kills more than four hundred Americans each year. And, it said more than twenty thousand people are taken to hospital for treatment of health problems linked with the gas. Carbon monoxide is called the silent killer because people do not know it is in the air. The gas has no color, no taste and no smell. It does not cause burning eyes. And it does not cause people to cough. Yet, carbon monoxide gas is very deadly  . It steals the body's ability to use oxygen. Carbon monoxide makes it difficult for the blood to carry oxygen to body tissues  . It does this by linking with the blood. When the gas links with the blood, the blood is no longer able to carry oxygen to the tissues that need it. Damage   to the body can begin very quickly from large amounts   of carbon monoxide. How quickly this can happen depend on how long a person is breathing the gas and how much gas he or she breathes in. Carbon monoxide poisoning has warning signs . But people have to be awake to realize them. Small amounts of the gas will cause a person's head to hurt. He or she may begin to feel tired. Their stomachs may feel sick. The room may appear to be turning around. The person may have trouble thinking clearly. People develop serious headache as the amount of the gas continues to enter their blood. They will begin to feel very tired and sleepy. They may have terrible stomachache. Doctors say carbon monoxide influences people differently. For example a small child will experience health problems or die much sooner than an adult. The general health of the person or his or her age can also be important. Question: What does the passage mainly talk about? - Warning signs that carbon monoxide poisoning has. - Reasons why carbon monoxide can cause person's death. - The damage of carbon monoxide and how it works. - Influences of carbon monoxide on children and adults.
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assistant: The damage of carbon monoxide and how it works.