Read the following article and select the best answer. Article: Carbon monoxide poisoning kills and injures many people and animals around the world. The gas has been a problem since people first began burning fuels to cook food or to create heat. It is a problem in all parts of the world that experience cold weather. Carbon monoxide is called the silent killer because people do not know it is in the air. The gas has no color1. It has no taste. It has no smell. It does not cause burning eyes. And it does not cause people to cough. But it is very deadly. It robs the body of its ability to use oxygen. Carbon monoxide decreases the ability of 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 happens depends on the length of time a person is breathing the gas and the amount of the gas he or she breathes in. Carbon monoxide poisoning has warning signs. But people have to be awake to recognize them. Small amounts of the gas will cause a person's head to hurt. He or she may begin to feel tired. The person may feel sick. The room may appear to be turning around. The person may have trouble thinking clearly. People develop severe head pain as the amount of gas continues to enter their blood. They will begin to feel very tired and sleepy. They may have terrible stomach pains. Medical experts say carbon monoxide affects people differently. For example, a small child will experience health problems or die much quicker than an adult will. The general health of the person or his or her age can also be important. An older adult with health problems may suffer the effects of carbon monoxide more quickly than a younger person with no health problems. People with heart disease may suffer chest pains. They may begin to have trouble breathing. Question: Which of the following about carbon monoxide poisoning is true? - Adults are affected more seriously than children. - Young people are more severely affected than old people. - People in poor health may have more severe consequences. - People with heart problem only suffer from chest pains.
People in poor health may have more severe consequences.

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Read the following article and select the best answer. Article: I got your letter and was glad to find that you had not forgotten Jourdon, and that you wanted me to come back and live with you again in Tennessee, promising to do better for me than anybody else can. Although you shot at me twice before I left you, I did not want to hear of your being hurt. It would do me good to go back to the dear old home again and see Allen, Esther, Green, and Lee. Give my love to them all, and tell them I hope we will meet in the better world, if not in this. I want to know particularly what the good chance is you propose to give me. I am doing tolerably well here in Ohio. I get twenty-five dollars a month, with food and clothing; have a comfortable home for Mandy, the folks call her Mrs. Anderson; and the children--Milly, Jane, and Grundy--go to school and are learning well. The teacher says Grundy has a head for a preacher. We are kindly treated. Now, if you will write and say what wages you will give me, I will be better able to decide whether it would be to my advantage to move back again. We have concluded to test your sincerity by asking you to send us our wages for the time we served you. This will make us forget and forgive old scores and rely on your justice and friendship in the future. I served you faithfully for thirty-two years, and Mandy twenty years. At twenty-five dollars a month for me, and two dollars a week for Mandy, our earnings would amount to eleven thousand six hundred and eighty dollars. Add to this the interest for the time our wages have been kept back, and deduct what you paid for our clothing, and three doctor's visits to me, and pulling a tooth for Mandy. If you fail to pay us for faithful labors in the past, we can have little faith in your promises in the future. In answering this letter, please state if there would be any safety for my Milly and Jane, who are now grown up, and both good-looking girls. I would rather stay here and starve--and die, if it should come to that--than have my girls brought to shame by the violence and wickedness of their young... Question: According to the passage, the letter was written by Jourdon to his former _ . - friend - master - neighbor - relative
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master

Read the following article and select the best answer. Article: What do those countries have in common? People are killing each other or drive others out of their homes. Why is this happening? Very simple, in each of these, one group of people believes another group is different from them and dangerous to them. It has been thus through history. How different are humans from each other? We come in different colors: red, black, white, yellow and brown; we have a variety of political systems, social systems, religious views or none at all; We are different in mind, have different educational systems, different economic classes. We speak different languages, and have different customs and dresses. If we were to break each of these further, we would have quite a long list of qualities and characteristics that make humans appears to be different from each other. I say they appear to be different, because most of what have been listed stand for what we see or hear, not what is true of human. Man is man everywhere. It is only where he lives, when he lives there, with whom he lives there, and al the others that have effect on how he lives, that is, what he believes, what he wears, his customs, his language and so on. These are man-made facts that each group develops over tome, living together, facing the same problems, needing and desiring the same things. They are his culture. The truth is that we are much more same than different. If you wear one type of clothing and I wear another, we both wear some kind of clothing. Our culture demands it. If you speak one language and I another, we both speak so that others will understand us; we must communicate with each other. Nothing is gained by giving too many differences, but much is lost. If we understood our differences as the ones of culture, then we could make our world more peaceful. Differences does not mean better or worse, right or wrong. It means only that differences have been made by society. Differences produce variety of thoughts, work out human problems peacefully. Question: From this passage it can be inferred that _ . - Our world would be more peaceful if we understand and communicate with each other. - People don't know how differences are caused. - It is only differences that can solve man's problems. - Man is man everywhere but not woman.
Our world would be more peaceful if we understand and communicate with each other.