Q: Read the following article and answer the question. Article: Why would an animal kill itself? It seems a strange question, and yet it is one that has made some scientists curious for a long time. For there is a kind of animal called lemming , that periodically killed themselves together, and no one knows just why! The small creatures which live in the Scandinavian mountains, feed on a diet of roots and special insects and live in nests they dig underground. When their food supply is large, the lemmings live a normal and undisturbed life. However, when the lemmings' food supply becomes too low to support the population, a _ migration begins. The lemmings leave their nests in groups. Great numbers of them begin to travel across the Scandinavian plains, a journey that may last weeks. The lemmings eat everything in their path, continuing their long march until they reach the sea. The reason for what follows remains unbelievable to naturalists. Upon reaching the coast, the lemmings do not stop but swim by the thousands into the sea. Most stay afloat only a short time before they tire, sink and drown. A common theory for this mass self-killing is that the lemmings do not realize that the ocean is such a huge body of water in their cross-country journey, the animals must cross many smaller bodies of water, such as rivers and small lakes. They may think that the sea is just another such swimmable path to go through. But no final answer has been found to the strange happening. Question: The passage is mainly about _ . Answer:

OPTIONS:
- how lemmings find food
- why animals kill themselves
- the lemmings' self-killing
- the food supply in the Scandinavian mountains

A: the lemmings' self-killing

Q: Read the following article and answer the question. Article: In many countries, heart disease kills a lot of women and even more men. There are four major causes of this disease and these are smoking, poor or bad diet, a family history of heart disease and stressful work. Among these main wrong-doers, the most common cause is stress. What is stress and how do you feel when you are under stress? Imagine you live alone - you are lying in bed at night and, suddenly, you hear someone in the kitchen. Immediately your heart begins to beat very fast and you feel that you can hardly breathe. What you are feeling is not stress, but fear. However, your body changes in the same way when you feel stress. That means that if you feel anxious and worried during an important examination, your heart may beat very fast and you may feel breathless too. You are experiencing stress. Another common situation in which a person is likely to feel stress is to have to do something, for example, performing a boring duty, every day. Let us look at the case of Annie who was a nurse. She felt a lot of stress in her work and began to have very bad headaches at the end of the day. Each morning she woke up more tired than she was when she went to sleep. She did not want to go out in the evening with her friends and she felt unhappy all the time. Finally, she sat down and thought about her life. She saw a lot of illness and death in her work but that was not the reason why she was under stress. The real reason was that she felt unable to make a positive decision in her job - she had to do what the doctors and sisters told her. So, Annie went back to college for further study. When she graduated, she found a job where she was part of a team as before, but where she had responsibility in making decisions. Her working hours were longer and her work more difficult than when she was a nurse but she enjoyed it. She felt she was in control of her life and her work. For Annie, stress in her old job had made her change her life and end a difficult situation. Stress in her new job became a good thing because it... Question: Feeling _ is one form of stress. Answer:

OPTIONS:
- tired
- alone
- anxious
- breathless

A: anxious

Q: Read the following article and answer the question. Article: One of the most popular American singers of the twentieth century was Elvis Presley. He made the Rock & Roll music popular around the world. He sold millions of records and made many successful films, and he helped change the direction of popular music in the 1960s. Elvis Presley was born in a poor family in 1935. His parents were simple country people who often took him to church, where he learned to sing and he never forgot the kind of songs that he used to sing in church as a child. When he was a teenager, Elvis moved from Tupelos to Memphis in Tennessee, where he attended high school, but he was not a good student. His only real interest was singing. He began to sing in the style that is called "country and western". In 1955 he recorded some songs for his mother's birthday. The people at the recording studio liked his singing and his music. There was something different about it. It was country and western music, but it also sounded a little like the music, which black people used to sing in the American South, music known as "blues". Shortly after that, Elvis met Tom Parker, who became his manager and arranged concerts for him across the United States and new recordings as well. Soon Elvis rose to fame all over the country. Later, Elvis went to Hollywood and began to appear in films like Love Me Tender and King Creole. But Elvis found it hard to live with success, like many other entertainment personalities .He began to take drugs and his health began to suffer. When he died at an early age of 42 in 1977, his many millions of fans were shocked. "The King Is Dead!" the newspaper said. But today his memory and his music live on and he will always be remembered as the King of Rock & Roll. Question: Judging from the passage, we may conclude _ . Answer:

OPTIONS:
- Elvis forgot his church music at a later age
- his church songs helped his development in his singing
- Elvis didn't get any help from his parents in singing
- his church songs didn't help develop his own style

A:
his church songs helped his development in his singing