Q: Read the following article and select the best answer. Article: It is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain lives for only three to five minutes. More often the doctors can't fix the damage. Sometimes they are afraid to try something to help because it is dangerous to work on the brain. The doctors might make the person worse if he operates on the brain. Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain. Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, and then he operated on them. He made the monkeys' blood go through a machine. The machine cooled the blood. Then the machine sent the blood back to the monkeys' brains. When the brain's temperature was 10degC, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before. They were healthy and busy. Each one could still do the jobs the doctor had taught them. Question: The brain operation was made possible mainly by _ . - taking the blood out of the brain - trying the operation on monkeys first - having the blood go through a machine - lowering the brain's temperature
A: lowering the brain's temperature

Q: Read the following article and select the best answer. Article: Robert Frost was at heart a mean-spirited human being, not the kind of man one would expect to write poetry. He was born in San Francisco. Frost entered Dartmouth University in 1893, but dropped out, and switched to Harvard, which he attended for two years. He started a brief teaching career, where he was inspired to become a poet by some of his students' work. Frost stopped teaching and became a farmer. During this time he wrote numerous poems, and a couple of short stories. While he was a farmer he started to think seriously about becoming a famous poet. In almost all of his poems, Frost wrote in the first person. The first widely-read poem that he published was called My Butterfly. At first his audience was very small, but with his Collected Poems he became famous. Robert Frost received almost all the awards that there were for poetry. His poetry describes the forces of nature, and the violence and deep emotional needs of human beings, which reflect the experiences of his childhood. Robert Frost will always be known as one of the best poets in history. His way of putting emotion and violence into words is remarkable . His talent for poetry is natural-born and he had discovered this when he started to farm. Even though he treated his wife and children terribly, he still became one of the best-known poets of his and our day. Question: We can learn from the passage that _ . - Robert Frost had been a famous writer before he started teaching - Robert Frost wrote his poems mostly in the first person - Robert Frost was very famous at the beginning of his writing career - Robert Frost began to write poems when he was a teacher
A: Robert Frost wrote his poems mostly in the first person

Q: Read the following article and select the best answer. Article: The private automobile has long played an important role in the United States. In fact, it has become a necessary and important part of the American way of life. In 1986, sixty-nine percent of American families owned at least one car, and thirty-eight percent had more than one. By giving workers rapid transportation, the automobile has freed them from having to live near their place of work. This has encouraged the growth of the cities, but has also led to traffic problems. For farm families the automobile is very helpful. It has made it possible for them to travel to town very often for business and for pleasure, and also to transport their children to distant schools. Family life has been affected in various ways. The car helps to keep families together when it is used for picnics, outings, and other shared experiences. However, when teenage children have the use of the car, their parents can't keep an eye on them. There is a great danger if the driver has been drinking alcohol or taking drugs, or is "showing off" by speeding or breaking other traffic laws. Mothers of victims of such accidents have formed an organization called MADD(Mothers Against Drunk Driving). These women want to prevent further tragedies . They have worked to encourage the government to limit the youngest drinking age. Students have formed a similar organization, SADD (Students Against Drunk Driving) and are spreading the same message among their friends. For many Americans the automobile is a necessity. But for some, it is also a mark of social position and for young people, a sign of becoming an adult. Altogether, cars mean very much to Americans. Question: We can infer from the text that _ in America. - it will be more difficult for people to get new cars - parents will not allow their children to have their own cars - the government will encourage people to use public transportation - cars will still be popular though they have caused many problems
A: cars will still be popular though they have caused many problems

Q: Read the following article and select the best answer. Article: Work is a part of living --my grandparents understood that. They lived and worked on a farm that has been in my family for 150 years. They raised chickens for eggs , pigs and cattle for meat . Cows were kept for milk and the cream, from which Grandma made butter and cheese. What little yard they had became a garden. The Depression, therefore, didn't make much change in their lives. But it did bring an unending flow of men out of work, drifting from job to job, to the farm. The first to show up at the door of the kitchen was a man in rags. He took off his hat and quietly explained that he hadn't eaten for a while. Grandpa stood watching him a bit , then said , "There's a stack of firewood against the fence behind the barn . I've been needing to get it moved to the other side of the fence . You have just about enough time to finish the job before lunch ." Grandma said a surprising thing happened. The man got a shine in his eyes and he hurried to the barn at once. She set another place at the table and made an apple pie. During lunch, the stranger didn't say much, but when he left, his shoulders had straightened. "Nothing ruins a man like losing his self-respect," Grandpa later told me. Soon after, another man showed up asking for a meal. This one was dressed in a suit and carried a small old suitcase. Grandpa came out when he heard voices. He looked at the man and then offered a handshake." There is a stack of firewood along the fence down behind the barn I've been meaning to get it moved. It'd sure be a help to me . And we'd be pleased to have you stay for lunch." The fellow set his suitcase aside and neatly laid his coat on top. Then he set off to work. Grandma says she doesn't remember how many strangers they shared a meal with during those Depression days-or how many times that stack of wood got moved. Question: The writer's grandfather was all of the following but _ . - kind - thoughtful - wealthy - sympathetic
A: wealthy