单选题There is a growing gap between the rich and the poor. A．conflict B．tension C．gulf D．confrontation

单选题Even sensible men do {{U}}absurd{{/U}} things.

单选题The church forecasts that by 2015 this number will increase to nearly to million. A. rejected B. projected C. released D. produced

单选题Michael is now{{U}} merely{{/U}} a good friend．

单选题They voted to abolish the office of second vice-president.

单选题How do you {{U}}account for{{/U}} your absence from the class last thursday?

单选题We shall keep the money in a secure place.

单选题Anyone who wants to apply for a loan need read the following {{U}}specifications{{/U}}.

单选题He began his talk by giving a concise definition of post-modernism. A. long and detailed B. short and clear C. comprehensive D. professional

单选题Dairy products may provoke allergic reactions in some people.

单选题I have been trying to quit smoking.

单选题It can be seen from the last two paragraphs that

单选题Her sister urged her to apply for the job. A．advised B．caused C．forced D．promised

单选题We ale disappointed to find out that he has made a fatal mistake.A. crucialB. foolishC. stupidD. big

单选题City dwellers are {{U}}exhilarated{{/U}} by country air.

单选题The Theory of Everything If Stephen Hawking lives until the year 2017, he will have lived more than 50 years longer than his doctors expected. When he was a college student, doctors discovered that he had a rare disease. This disease causes a gradual disintegration (分解) of the nerve cells in the brain cells that regulate voluntary muscle activity. Death almost always occurs within two or three years. Today Stephen Hawking cannot walk or speak. He cannot move his arms or his head. He cannot taste or smell anything. And yet this man is Professor of Mathematics at Cambridge University, a position held by the famous scientist Isaac Newton in 1669. Hawking is often described as the greatest scientist since Albert Einstein, but to the world outside science, he is also known as the man who made scientific theory understandable. His book, A Brief History of Time , has sold over eight million copies. He says that since he does not have to think about his body or do any of the things other men have to worry about, such as washing the car or working in the yard, he can dedicate all of his time to thinking. This puts him in the perfect position to find the answer to the question that he has dedicated his life to. His question is: Is there a complete theory of the universe and everything in it? Despite his tremendous physical disabilities, he has already made some very important discoveries about the origin of the universe, how the universe holds together, and how it will probably end. He has also been able to explain the secrets of "black holes" in space. Now he is looking for a set of rules that everything in our universe must obey. He calls it the Theory of Everything. He thinks that someone will have found the answer within the next 20 years. If Stephen Hawking is able to find his Theory of Everything, he will have given the world the opportunity to understand things that will change the whole nature of science and probably also the way we live.

单选题Some students lose marks in their examinations simply because they don't read questions carefully.

单选题{{B}}第二篇{{/B}} {{B}}Powering a City? It's a Breeze.{{/B}} The graceful wooden windmills that have broken up the flat Dutch landscape for centuries -- a national symbol like wooden shoes and tulips -- yielded long ago to ungainly metal-pole turbines. Now, windmills are breaking into a new frontier. Though still in its teething stages, the "urban turbine" is a high-tech windmill designed to generate energy from the rooftops of busy cities. Lighter, quieter, and often more efficient than rural counterparts, they take advantage of the extreme turbulence and rapid shifts in direction that characterize urban wind patterns. Prototypes have been successfully tested in several Dutch cities, and the city government in the Hague has recently agreed to begin a large-scale deployment in 2003. Current models cost US ＄8,000 to US ＄12,000 and can generate between 3,000 and 7,000 kilowatt hours of electricity per year. A typical Dutch household uses 3,500 kilowatt hours per year, while in the United States, this figure jumps to around 10,000 kilowatt hours. But so far, they are being designed more for public or commercial buildings than for private homes. The smallest of the current models weigh roughly 200 kilograms and can be installed on a roof in a few hours without using a crane. Germany, Finland and Denmark have also been experimenting with the technology, but the ever-practical Dutch are natural pioneers in urban wind power mainly because of the lack of space. The Netherlands, with 16 million people crowded into a country twice the size of Slovenia, is the most densely populated in Europe. Problems remain, however, for example, public safety concerns, and so strict standards should be applied to any potential manufacturers. Vibrations are the main problem in skyscraper-high turbine. People don't know what it would be like to work there, in an office next to one of the big turbines. It might be too hectic. Meanwhile, projects are under way to use minimills to generate power for lifeboats, streetlights, and portable generators. "I think the thing about wind power is that you can use it in a whole range of situations," said Corin Millais, of the European Wind Energy Association. "It's a very local technology, and you can use it right in your backyard. I don't think anybody wants a nuclear power plant in their backyard."

单选题There is an {{U}}abundant{{/U}} supply of cheap labor in this country. A.a steady B.a plentiful C.an extra D.a stable

单选题The largest warming effects happened in the Northern Hemisphere with