Q: I'm taking a test and have to guess the right answer to the question after the article. Article: Contrary to people's previous knowledge, it's food shortage not dietary preference that motivates birds to migrate thousands of miles back and forth between breeding and nonbreeding areas each year, a new research shows. "It's not whether you eat insects,fruits or candy bars or where you eat them that counts,but how reliable that daytoday food source is," said the study leader W.Alice Boyle of the University of Arizona. To figure out the underlying pressure that drives some birds to leave home for the season,Boyle examined 379 related species of New World flycatchers and compared their sizes,food types, habitats, migratory behaviors and whether or not they fed in flocks. To compare the birds,the researchers constructed a "supertree" showing the exact evolutionary relationships among different species. A computer analysis then determined whether a particular species was migratory because it ran in the "family" or whether something in the bird's environment was forcing it to leave each season.Boyle and her colleagues found that food shortage was the number one issue that predicted a species' migratory behavior. "Food availability is the underlying pressure, not diet and habitat," Boyle said. An alternative strategy that the birds use to handle food shortage is to hunt in flocks, since a group is more likely to find a new source of food than an individual. "If you suffer from food shortage, you have two options," Boyle said."You can either hunt with other birds or you can migrate." Question: Birds were thought to migrate in order to _ . Options: A: seek their favorite food in a new place B: avoid being constantly hunted C: breed more young in a new place D: adjust themselves to the changes of weather
A: A

Q: I'm taking a test and have to guess the right answer to the question after the article. Article: If you were to come up with a list of organizations whose failures had done the most damage to the American economy in recent years,you would probably have to start with the Wall Street firms that brought us the financial.From there,you might move on to the automakers in Detroit. But I would suggest that the list should also include a less obvious nominee:public education. At its top level,the American system of higher education may be the best in the world.Yet in terms of its core mission-turning teenagers into educated college graduates--much of the system is failing. The United States does a good job enrolling teenagers in college,but only half of the students who enroll end up with a bachelor's degree. So identifying the causes of the college dropout crisis m the world's largest economy matters enormously, and a new book called Crossing the Finish Line tries to do precisely that.Its authors are economists William Bowen and Michael.McPherson,and a doctoral candidate Matthew Chigoes.The first problem they diagnose is something they call tender-matching. It refers to students who choose not to attend the best college they can get into.They instead go to a less selective one,perhaps one that is closer to home or less expensive.About half of the low--income students with a grade-point average of at least3.5 in high school and an SAT score of at least 1,200 do not attend the best college they could have. "I was really astonished by the degree to which well--qualified students from poor families under-matched," said Mr.Bowen. In fact,well-off students attend the colleges that do the best job of producing graduates.Meanwhile,lower-income students-even when they are better qualified--often go to colleges that excel in producing drop-outs."It's really a waste,"Mr.Bowen said,"and a big problem for the country."As the authors point out, the only way to lift the college graduation rate significantly is to lift it among poor and working--class students. Instead,it appears to have fallen. What can be... Question: Which of the following would people first think of as a factor responsible for the American financial crisis according to the passage? Options: A: The government B: Public education C: The Detroit automakers. D: The Wall Street firms
A: D

Q: I'm taking a test and have to guess the right answer to the question after the article. Article: The cars were honking on the road one morning as I was walking to the park. I walked on and soon found the cause -- a little taxi that had got stuck in the middle of the road. There was sweat on the driver's face as he tried to start the engine again and again -- nothing happened. "No petrol," I said to myself and then found myself getting angry. "Why doesn't the fool move his taxi to the side?" I thought, so did all the others who honked and shouted. He got up tiredly, and the passenger in the taxi got out. He was a young man in a white shirt, who watched the driver try to push it to the side. "Stupid guy!" I said. "Can't he lend a helping hand? " I watched as the poor driver pushed it to the side. Cars, buses and trucks went past cursing ( ) the poor man. The young man took another taxi and went off. The taxi driver began mending his taxi. "Stupid passenger!" I said to him. "He didn't help you!" The taxi driver slowly got up. "Sir!" he asked, "Did you?" I looked at him guiltily, then looked away, and walked away fast, asking myself, "Did I help the poor man push his taxi?" What had I been doing as the traffic jam took place? How had I helped deal with the problem? Did I help the poor man push his taxi? I'd done my bit, with my mouth. But never had I moved to solve the problem. I was shocked with guilt as I heard him asking, "Sir! Did you?" Question: From the incident, the author learnt a lesson that we should _ . Options: A: criticize those who don't help B: hurt the self-respect of others no more C: think more of those who are in need D: stop talking and start to help
A: D

Q: I'm taking a test and have to guess the right answer to the question after the article. Article: "If you want to see something well, reach out and touch it!" That may seem a strange thing to say.But touching things can help you to see them better. Your eyes can tell you that a glass ball is round.But by holding it in your hands, you can feel how smooth and cool the ball is.You can feel how heavy the glass is.When you feel all these about the ball, you really see it. With your skin, you can feel better.For example, your fingers can tell the difference between two coins in your pockets.You can feel a little drop of water on the back of your hand, too. You can even feel sounds against your skin.Have you ever wanted to know why some people like very loud music? They must like to feel the sounds of music. All children soon learn what "Don't touch!" means.They hear it often.Yet most of us keep on touching things as we grow up.In shops, we often have to touch things before we buy them. The bottoms of our feet can feel things, too.You know this when you walk on warm sand, cool grass or a hard floor.All feel different under your feet. There are ways of learning to see well by feeling.One way is to close your eyes and try to feel everything that is touching your skin.Feel the shoes on your feet, the clothes on your body, the air on your skin...... Most museums are just for looking.But today some museums have some things to touch.Their signs say, "Do touch!" There you can feel everything on show. Question: When people buy things in shops, they often _ . Options: A: try them on first B: put their right hand on them C: just have a look D: feel and touch them
A: D