单选题During the rainy season the Mississippi River may carry away hundreds of acres of valuable topsoil from one area and Uarbitrarily/U deposit it in another.

单选题If the trade deficit really is one of the nation's most pressing problems, the surest and swiftest way to tackle it would be ______ a deep recession.

单选题The police had decided not to proceed with a prosecution against Irwin, ______ that it was highly unlikely that any jury in the land would wish to punish him for doing this mercy killing. A. since they had clearly recognized B. clearly recognizing C. clearly being recognized D. clearly having recognized

单选题This road is ______ to flood in summer, so it is necessary for us to build a reservoir during the drought.

单选题So the most______ scientist alive at that time who symbolized the height of human intellect adopted what became his last message-this manifesto, which implored governments and the public not to allow our civilization to be destroyed by human folly.

单选题States are considering major changes in prepaid college tuition programs——raising prices, restricting participation or canceling them——as they grapple with financial woes. Nationwide, families will likely have to pay more to participate, or accept that they might not cover tuition when children go to college. Colorado has closed its prepaid plan to new investors and told existing ones that it may not cover future tuition increases. Wisconsin stopped selling its plan Dec. 20. Maryland and Illinois are among states hiking prices by 20% or more. Prepaid plans let parents lock in tuition by paying for it now, protecting them against rising costs. But the bear market has hurt investment returns, leaving the plans unable to keep up with big increases in tuition. So far, Colorado is the only state that has told participants their investments may not cover tuition, and no plan has missed a payment. Other states have said they will fulfill obligations, even if it requires a legislative bailout. Still, the financial problems have forced thousands to grapple with uncertainty——something prepaid plans were designed to avoid. More than 1 million families have an estimated $8 billion invested in the plans, says ＜SavingforCollege.com＞. Some states, including Colorado, may replace the prepaid plan with a guaranteed investment con tract, a CD-like investment that's backed by an insurance company. Investors get a minimum rate of re mm, but no guarantee that it will cover tuition. Wisconsin's EdVest program is encouraging investment in a stable value fund, which is similar to a guaranteed investment contract, in its investment plan. Wisconsin's prepaid plan never guaranteed to cover tuition inflation. It also never get a lot of investors, possibly because it lacked that guarantee. In Florida, a task force is considering limiting the state's prepaid program to low-income families. Ohio officials are also looking at limiting participation, but it's a measure they hope to avoid. "Program administrators are looking for alternatives, "says Andrea Feirstein, a state-plan consultant. Maryland recently boosted its prices by up to 30%; Illinois by up to 23%. The increases have made some prepaid plans uneconomical for parents of older children. In Ohio, the price of one year's tuition for a child over 12 months old is $8,000, more than 40% above current tuition at Ohio State. So it may not be a good deal for children starting college in three or four years because tuition may not jump that much that fast.

单选题

单选题The editor considered the author"s analysis in his article to be penetrating .

单选题Cosmic rays of various kinds come through the air from outer space, but enormous quantities of radiation from the sun are ______ off. A. avoided B. excluded C. screened D.separated

单选题The room was full of people and smoke. She started to feel ______ with the heat inside

单选题Intellectual property is a kind of ______ monopoly, which should be used properly or else would disrupt healthy competition order.(中国科学院2011年3月试题)

单选题The accused man ______ his innocence by proving that he was aboard when the murder was committed.

单选题{{B}}Passage 5{{/B}} Alison closed the door of her small flat and put down her briefcase. As usual, she had brought some work home from the travel agency. She wanted to have a quick bite to eat and then, after spending a few hours working, she was looking forward to watching television or listening to some music. She was just about to start preparing her dinner when there was a knock at the door. "Oh, no! Who on earth could that be?" she muttered to herself. She went to the door and opened it just wide enough to see who it was. A man of about sixty was standing there. It took her a moment before she realized who he was. He lived in the flat below. They had passed each other on the stairs once or twice, and had nodded to each other but never really spoken. "Uh, sorry to bother you, but.., uh. .. there's something I'd like to talk to you about," he mumbled. He had a long, thin face and two big front teeth that made him look rather like a rabbit. Alison hesitated, but then, opening the door wide, asked him to come in. It was then that she noticed the dog. She hated dogs--particularly big ones. This one was a very old, very fat bulldog. The man had already gone into her small living-room and, without being asked, had sat down on the sofa. The dog followed him in and climbed up on the sofa next to him, breathing heavily. She stared at it. It stared back. The man coughed. "Uh, do you mind if I smoke?" he asked. Before she could ask him not to, he had taken out a cigarette and lit it. "I'11 tell you why I've come. I...I hope you won't be offended but, well..." he began and then stopped. Suddenly his face went red. His whole body began to shake. Then another cough exploded from somewhere deep inside him. Still coughing, he took out a grey, dirty-looking handkerchief and spat into it. Afterwards he put the cigarette back into his mouth and inhaled deeply. As he did so, some ash fell on the carpet. The man looked around the room. He seemed to have forgotten what he wanted to say. Alison glanced at her watch and wondered when he would get to the point. She waited. "Nice place you've got here," he said at last.

单选题What things in life are you most desirous ______ attaining? A. to B. for C. with D. of

单选题Can't you speak more ______ to your parents? A) respectably B) respectingly C) respectively D) respectfully

单选题In most American cities, the rent for a one-bedroom apartment was $250 or more per month in recent years. In some smaller cities such as Louisville, Kentucky or Jacksonville, Florida the rent was less, but in larger cities it was more. For example, if you lived in Los Angeles, you had to pay $400 or more to rent a one-bedroom apartment, and the same apartment rented for $625 and up in Chicago. The most expensive rents in the U. S. were in New York City, where you had to pay at least $700 a month to rent a one-bedroom apartment in most parts of the city. Renters and city planners are worried about the high cost of renting apartments. Many cities now have rent control laws to keep the cost of renting low. These laws help low-income families who cannot pay high rents. Rent controls in the United States began in 1943 when the government imposed rent controls on all American cities to help workers and the families of soldiers during World War Ⅱ. After the war, only one city—New York—continued these World War Ⅱ controls. Recently, more and more cities have returned to rent controls. At the beginning of the 1980s, nearly one fifth of the people in the United States lived in cities with rent-control laws. Many cities have rent-control laws, but why are rents so high? Builders and landlords blame rent controls for the high rents. Rents are high because there are not enough apartments to rent, and they blame rent controls for the shortage of apartments. Builders want more money to build more apartment buildings, and landlords want more money to repair their old apartment buildings. But they cannot increase rents to get this money because of the rent-control laws. As a result, landlords are not repairing their old apartments, and builders are not building new apartment buildings to replace the old apartment buildings. Builders are building apartments for high-income families, not low income families, so low-income families must live in old apartments that are in disrepair. Builders and landlords claim that rent-control laws really hurt low income families. Many renters disagree with them. They say that rent control is not the problem. Even without rent controls, builders and landlords will continue to ignore low-income housing because they can make more money from high-income housing. The only answer, they claim, is more rent controls and government help for low-income housing.

单选题The Robogat is designed to pump water ______.