Read the article and select the best answer. Article: There is a discovery that students who rely on working at night to improve their grades might want to sleep on that strategy: a new survey in the US says those who never study all night have slightly higher grades than those who do. A survey of 120 students at St. Lawrence University found that students who have never pulled an all-nighter on average have higher grades than those who have. The survey found those who did not study through the night had a grade point average of 3.2 compared to 2.95 for those who have. The study, by assistant professor of psychology Pamela Thacher, is to be included in the January issue of Behavioral Sleep Medicine. "It's not a big difference, but it's pretty striking," Thacher said. "I am primarily a sleep researcher and I know nobody thinks clearly at 4 in the morning. You think you do, but you can't." Many college students, of course, have inadequate or irregular sleep, for reasons ranging from excessive caffeine to poor time management. "A lot of students were under the impression that all-nighters were a very useful tool for accomplishing work, that caffeine intake was very useful in meeting deadlines and stuff like that," said Chatani, who had a 3.4 grade point average last term. Dr Howard Weiss, a physician at St. Peter's Sleep Center in Albany, said the study results make sense. "Certainly that data is out there showing that short sleep duration ly interferes with concentration, interferes with performance on objective testing," he said. Some night owls do get good grades, of course, which may be explained by circadian rhythms , Weiss said. Some people have different 24-hour body clocks than others, and may do better depending on class and testing times, Weiss said. Question: The purpose of the passage is to tell us _ . Options: A: the bad effects of pulling an all-nighter B: pulling an all-nighter leads to sleep problems C: Thacher' s doubt about all-nighters D: all-nighters hurt students' grades
D

Read the article and select the best answer. Article: A student and his teacher were walking through the forest. The student was disturbed by the fact that his mind was in constant unrest . He asked his teacher, "Why most people's minds are restless, and only a few have a calm mind? What can one do to still the mind ?" The teacher looked at him, smiled and said, "I will tell you a story. An elephant was standing and picking leaves from a tree. A small fly came, flying and buzzing near his ear. The elephant waved it away with his long ears. Then the fly came again, and the elephant waved it away _ ". This was repeated several times. Then the elephant asked the fly, "Why are you so restless and noisy? Why can't you stay for a while in one place?" The fly answered, "I am attracted to whatever I see, hear or smell. My five senses pull me constantly in all directions and I cannot resist them. What is your secret? How can you stay so calm and still?" The elephant stopped eating and said, "My five senses do not rule my attention. Whatever I do, I get immersed in it. Now that I am eating, I am completely immersed in eating. In this way I can enjoy my food and chew it better. I rule and control my attention, and not the other way around." The student's eyes opened wide and smile rose on his face. "I understand! If my five senses are in control of my mind and attention, then my mind is in constant unrest. If I am in charge of my five senses and attention, then my mind becomes calm". "Yes, that's right", answered the teacher, "The mind is restless and goes wherever the attention is. Control your attention, and you control your mind". Question: How did the elephant drive the fly away? Options: A: With its long tail. B: With its long ears. C: With its strong legs D: With its long trunk.
B

Read the article and select the best answer. Article: Technology is making life easier for some dairy farmers.They use robotic systems to milk their cows.Cows are trained to follow a series of paths that lead to milking stations.Only one cow at a time can enter a station. Once inside,the cow is rewarded with food.As the cow eats,a robotic arm cleans and connects the animal to the milking machine.A few minutes later,milking is complete.The gate is opened,the cow is released and the next cow enters. The robotic systems are designed to operate 24 hours a day.The cows get to decide when they want to be milked.Cows are milked an average of about three times a day.Some are milked four to six times a day. The cows wear collars around their necks that identify them to the system.A computer keeps records on their eating and milking.A cow is released from the station if the computer decides it should not be milked. The automated system also measures the temperature and color of freshly produced milk.Milk is thrown away if it does not pass the tests. Professor Plaut believes the systems will appeal especially to the next generation of farmers.She means young people who are more interested in technology and less interested in working all the time on the farm.Still,she says the price of robotic milking systems will continue to limit their use. Doug and Tina Suhr have more than 100 cows on their family farm.Last year it became the fourth farm in southeast Minnesota to get a robotic milking system.A recent story in a local agricultural newspaper said the first robot cost 175 000 dollars.The second cost 150 000. Doug told AgriNews that wages that would have been paid for one employee in five years will pay for one robot.He says the increase in milk production reaches a high of more than six kilograms per cow per day. Question: Why is the robotic system not popular now? Options: A: Because young people have no interest in it. B: Because it is difficult to learn how to use it. C: Because people can't afford to buy it. D: Because it usually causes the waste of milk.
C

Read the article and select the best answer. Article: I was on my way home by train. The train's gentle rocking made me feel sleepy, despite the fact that I was standing with what felt like a building in the bag on my back. I turned slightly to reduce some of the pain in my shoulder and saw the door at the end of the car. An obviously homeless man walked through the door. He was dressed in a dirty heavy coat. He dragged a bag that looked thirty times as heavy as mine. He asked people for spare change in the polite, experienced voice of a person who had done this before. I glanced down as I did a quick check of my pockets, hoping for spare change to give him that wouldn't leave me short for the rest of the week. I came up empty and lifted my head just as his path crossed mine. Shrugging apologetically, I told him I had no change, expecting him to move through the door next to me and continue going to the next cars. However, he stood and stared at me, saying something quietly. Then I realized he was asking me to take him home. Suddenly money didn't matter that much to this man who lived in poverty without even enough money to purchase socks to stave off the chill. Not food, not clothes, not even a blanket. Just affection. I felt worse than I had done about not finding any spare change. My heart sank and I couldn't even think of the proper words to say besides "I can't, I'm sorry." He asked me, "What's wrong with my request?" The answer was on my lips before I knew it. I told him that I was not good enough for him. It was after the man had left that I thought about the answer I had given him and wondered why it felt so right to say so. I realized that I should have requested love over money or food. The fact that he could appreciate something so simple and invisible is more than I could ever have expected of myself. Question: To his surprise, the author found that the homeless man wanted _ . Options: A: neither food nor money B: not money but love C: neither money nor love D: both shelter and protection
B