Global warming has a great influence on species all over the world. Polar bears are particularly at risk because their habitat is increasingly threatened by global warming. Lots of scientific research has shown that polar bear numbers are on the decline, and that if action is not taken quickly, polar bears may die out from the Earth. Pack ice is decreasing globally. In the wild, polar bears spend much of their lives wandering pack ice in search of food. In 2009, several polar bear deaths by drowning were recorded, which had never been heard of before. The polar bears had been trapped on isolated areas of floating ice, and had tried to swim for land. Due to the shrinkage of the ice, the polar bears tired and drowned before reaching the shore, though they are rapid and aggressive swimmers. This problem will only grow as the pack ice shrinks. The shrinkage of the ice has other consequences for polar bears. They are losing their natural prey , who are also affected by the shrinkage in habitat. Land animals also do not provide the high-fat diet that polar bears need, which will lead to starvation. Starving mothers will not be able to provide their babies with the nutrition they need, which will further contribute to the decline in polar bear numbers. While searching for food and habitat, polar bears have also fought with humans. With the disappearance of the sea ice, polar bears have begun to show up around inhabited areas looking for food and shelter. But they often end up being killed by hunters because they present a threat to human communities. The combination a deadly factors brought about by global warming put polar bears at a very high rate of risk. A global effort is needed to act against global warming before it is too late for polar bears, as well as many other species that call Earth home. This text is mainly developed by _ . A) analyzing causes and effects B) making comparisons C) examining differences D) giving examples
A
This year's Newsweek list of the top 100 high schools shows that today those with fewer students are rising. Ten years ago, when the first Newsweek Top School List based on college-level test participation was published, only three of the top 100 schools had graduating classes smaller than 100 students. This year there are 22. Fifty years ago, they were the latest thing in educational reform: big, modern high schools outside the cities with thousands of students. Big schools meant economic efficiency, a greater choice of courses, and better football teams. But only years later did we understand that it involved the difficulty of strengthening personal connections between teachers and students. SAT scores began dropping; on average, 30% of students did not complete high school in four years, a figure that rose to 50% in poor city neighborhoods. High schools for a variety of reasons seemed to have made little progress. Size isn't everything, but it does matter, and the past decade has seen a noticeable trend toward smaller schools. This has been partly due to the Bill and Melinda Gates Foundation, which has invested $1.8 billion in American high schools, helping to open about 1,000 small schools -- most of them with about 400 kids, each with an average enrollment of only 150 students per grade. About 500 more are on the drawing board. Districts all over the country are taking notice, along with mayors in cities like New York, Chicago and San Diego. And most noticeable of all, there is the phenomenon of large urban and suburban high schools that have split up into smaller units of a few hundred. Hillsdale High School in San Mateo, California, is one of those ranking No.423 -- among the top 2% in the country. In 2003, Hillsdale remade itself into three "houses". 300 students arriving ninth graders are randomly assigned to one of the houses, where they will keep the same four core subject teachers for two years before moving on to another for 11th and 12th grades. Teachers meet with students in groups of 25, five... What attitude does the author have towards the present trend in high school education? A) Subjective. B) Objective. C) Indifferent. D) Disapproving.
B
Q: As the global financial crisis hits the economy, it's tough finding a job--especially if you're competing with thousands of other hopeful students. Sometimes you get the interview, but don't quite seem to land the job because you don't have related experience. Don't despair! Here are a few tips that might give you an edge. Get connected to your network and try to expand it. Talk to friends, family and acquaintances. Let everyone know you are looking for a job. Prepare your resume carefully and be sure it's perfect. Have someone else read it over for typos and grammatical errors. Get professional help. It's worth the money to present yourself well. If money is tight, read books on resume writing from your public library or search for free help on the Internet. When you apply for a job, be sure you match and list any skills listed on the posting with the skills you have. If you get an interview, be sure to describe those skills thoroughly. Just having the skills is not enough. Expressing your abilities well can make all the difference in getting the job. Research typical interview questions and practice interviewing. Be well prepared for every interview.www.ks5u.com Don't be afraid to accept a position for which you are overqualified--if there's room for advancements. Many great job advancements come from first doing well at an entrylevel position. If you have the right skills and attitude, it won't be long before you're in the job you want. Volunteer for a few weeks in your field of study to gain experience if you feel your resume needs an improvement. When deciding what to wear for an interview, think about the position level and the dress code of the organization. Use every tool available to you. For example, this site has many job links for your use. Good luck! What's the author's advice on the resume? A) To read it over several times by yourself. B) To get professional help even if it costs. C) To copy something from books. D) To publish it on the Internet.
A: B
Q: Renaissance is a French word. It means "rebirth". It's a strange name for a period of history. What was exactly " reborn" during the Renaissance? To answer this question, we need to look back at the time of the Roman Empire. At this time Roman artists, scientists and writers influenced by Greek ideas were the world's most advanced. They had become skilled observers of the natural world around them, and had become experts in studying animals, plants, the human body or the stars and planets. They wrote down their ideas about what they saw, and based their theories about the world on their observations. During the fourth and fifth centuries the Roman Empire slowly broke down. Many of the Romans' art and sculptures were destroyed and some manuscripts were lost as well. But most importantly, some of the ancient attitudes were lost. A questioning approach to the world was replaced by an unquestioning one. Why did this happen? One reason was to do with the influence of the Christian Church. Through the thousand years following the fall of the Roman Empire, the Church controlled many aspects of life including education and learning. The Church ran all the universities and thought that the aim of a university should be to teach old ideas more clearly, not to introduce new ones. The scholars in the universities were expected to study God and heaven from the Bible and ancient books, rather than the world around them. Take medicine for example. The main textbook for doctors had been written by a Greek doctor called Galen more than a thousand years earlier. But when Roger Bacon, a thirteenth-century priest , said that a new approach to medicine was needed --- doctors should do their own original research instead of reading writers from the past such as Galen-the Church put him in prison. By the time of the fourteenth century, however, some parts of the Christian Church were becoming less strict about their ideas and there was a new state of mind among artists, doctors and scientist. People wanted to find out more about... We can infer that students in the Church controlled universities might _ . A) have good memories B) change their beliefs C) be lacking in creativity D) be interested in astronomy
A: C