单选题Who are these New Yorkers? Why do they come here? Where are they from? The last question at least is easy to answer: we come from everywhere. In the list of the top 20 source nations of those sending immigrants to New York between 1990 and 1994 are six countries in Asia, five in the Caribbean, four in Latin America, three in Europe, plus Israel and the former Soviet Union. All the New Yorkers are immigrants.A. RightB. WrongC. Not mentioned

单选题There are some things in the class the teachers will not {{U}}put up with{{/U}}. A. tolerate B. contribute C. resist D. prohibit

单选题Listening Device Provides Landslide Early Warning A device that provides early warning of a landslide by monitoring vibrations in soil is being tested by UK researchers. The device could save thousands of lives each year by warning when an area should be evacuated, the scientists say. Such natural disasters are common in countries that experience sudden, heavy rainfall, and can also be triggered by earthquakes and even water erosion. Landslides start when a few particles of soil or rock within a slope start to move, but the early stages can be hard to spot. Following this initial movement, "Slopes can become unstable in a matter of hours or minutes," says Nell Dixon at Loughborough University, UK. He says a warning system that monitors this movement might be enough to evacuate a block of fiats or clear a road, and save lives. The most common way to monitor a slope for signs of an imminent landslide is to watch for changes in its shape. Surveyors can do this by measuring a site directly, or sensors sunk into boreholes or fixed above ground can be used to monitor the shape of a slope. Slopes can, however, change shape without triggering a landslide, so either method is prone to causing false alarms. Now Dixon"s team has developed a device that listens for the vibrations caused when particles begin moving within a slope. The device takes the form of a steel pipe dropped into a borehole in a slope. The borehole is filled in with gravel around the pipe to help transmit high-frequency vibrations generated by particles within the slope. These vibrations pass up the tube and are picked up by a sensor on the surface. Software analyses the vibration signal to determine whether a landslide may be imminent. The device is currently being tested in a 6-metre-tall artificial clay embankment in Newcastle, UK. Early results suggest it should provide fewer false positives than existing systems. Once it has been carefully and thoroughly tested, the device could be used to create a complete early-warning system for dangerous slopes. "Locations with a significant risk of landslides could definitely benefit from a machine like this," says Adam Poulter, an expert at the British Red Cross, "as long as it doesn"t cost too much." But, Poulter adds that an early-warning system may not be enough on its own. "You need to have the human communication," he says. "Making systems that get warnings to those who need them can be difficult."

单选题The African had a {{U}}passion{{/U}} to keep his African origin alive.

单选题Saving Money Where you save your money often depends on what you are saving for. If you are saving to buy a CD(光盘)or to go to a concert，then probably you would keep your money somewhere in your room. If you ale saving for a big purchase like a mountain bike or a school trip，where would you save your money? One place to save money is the bank Putting your money in a savings account will help your money earn more money If you put your money in a piggy bank(猪形储蓄罐)，one year later you'll still have the same amount of money you put in. If you put your money in a savings account，one year later,you'll have more money than you put in Why? When you keep your money in a bank. your money earns interest. Interest is an amount of money a bank pays you to use your money The bank uses your money(and the money of other people，too)to loan money to people and businesses The bank will send you a statement several times a year. A bank statement tells you how much money you have in your account It also tells you how much interest you have earned If you leave your money in the bank，you can watch it grow! Another way you can save money is to buy a certificate of deposit or CD. If you have some money that you don't need to use for a long time，this is a good way to make your money grow. You Can buy a CD. at a bank You agree not to use the money for a certain period of time That period might be from six months to five years. You can't touch your money during that time If you do，you must pay a penalty，or fee

单选题He could not tolerate the extremes of heat in the desert.

单选题The benefits of giving up smoking include all the following EXCEPT

单选题The love of money is the root of all evil.

单选题The chairman {{U}}proposed{{/U}} that we should stop the meeting. A. showed B. suggested C. agreed D. believed

单选题Job Woes, Health Blues? After Susan Joyce was laid off from Digital Equipment Corp. , she was horrified to hear of two suicides in her layoff group. Then she learned about a colleague who stabbed his wife to death and hung himself. "I worked with him for 10 years, maybe more," says Joyce. "He seemed like a nice guy. These cases may sound extreme, but being fired or laid off is undeniably one of life' s biggest blows and can lead to clinical depression, violence and alcohol abuse, as well as strokes and heart attacks. Even the fear of losing a job produces more doctor visits and health worries. In short, the recent news about rising unemployment and job insecurity may be bad news for our health. Layoffs create a sense of hopelessness. Stress - related complaints such as insomnia and headaches tend to follow, lingering even after victims find new jobs, says University of Michigan psychologist Richard Price, who tracked more than 700 layoff victims for two years. Research based on 17 years of Pennsylvania unemployment records concluded that employees affected by a mass layoff at a plant were 15 percent more likely to die of any cause over the next two decades. Experts blame the cascade (大量倾泻) of misfortune that often follows after a layoff, including the loss of health insurance. Your health can suffer simply from fear of losing your job, says Sarah Burgard, a sociologist at the University of Michigan. After crunching data from two large national surveys, she concluded that chronic job insecurity over a two - year period rivals the anxiety of a job loss or a major illness. Burgard adjusted her data for what psychologists call "neuroticism" and found that even people who aren' t typically worriers report worse health when they believe their jobs are in danger. Fears of poor job prospects may have similar consequences. When Swedish researchers asked 21 - year - olds about their health during a recession, they reported more problems than a comparison group during a boom. Economic stress may even show up in national public -health measures, although experts disagree about how to calculate those effects. Harvey Brenner, professor emeritus ([大学教师]退休后仍保留头衔的，荣誉退休的) at Johns Hopkins's Bloomberg School of Public Health and a professor of public health at the University of North Texas, argues that the 1 percentage point increase in unemployment since a year ago could have serious health repercussions (持续影响，反响) for the next two years. According to Brenner' s projections, there could be as many as 47,000 more deaths than would have otherwise occurred, including 1,200 more suicides, as well as nearly 26,000 more heart attacks. Should unemployment continue to rise, these numbers are likely to increase too, he says.

单选题Many people leave their hearing problem untreated．because

单选题Our aim was to (update) the health service, and we succeeded.

单选题The closer a plant is to its natural state, the less suitable it is to ______ .

单选题Which is NOT true of sparklers?

单选题The doctor's pills worked Umarvels/U for me.

单选题It is virtually impossible to persuade him to apply for the job.

单选题 Medicine Award Kicks off Nobel Prize Announcements Two scientists who have won praise for research into the growth of cancer cells could be candidates for the Nobel Prize in medicine when the 2008 winners are presented on Monday, kicking off six days of Nobel announcements. Australian-born U.S. citizen Elizabeth Blackburn and American Carol Greider have already won a series of medical honors for their enzyme research and experts say they could be among the front-runners for Nobel. Only seven women have won the medicine prize since the first Nobel Prizes were handed out in 1901. The last female winner was U.S. researcher Linda Buck in 2004, who shared the prize with Richard Axel. Among the pair's possible rivals are Frenchman Pierre Chambon and Americans Ronald Evans and Elwood Jensen, who opened up the field of studying proteins called nuclear hormone receptors. As usual, the award committee is giving no hints about who is in the running before presenting its decision in a news conference at Stockholm's Karolinska Institute. Alfred Nobel, the Swede who invented dynamite, established the prizes in his will in the categories of medicine, physics, chemistry, literature and peace. The economics prize is technically not a Nobel but a 1968 creation of Sweden's central bank. Nobel left few instructions on how to select winners, but medicine winners are typically awarded for a specific breakthrough rather than a body of research. Hans Jornvall, secretary of the medicine prize committee, said the 10 million kronor (US $1.3 million) prize encourages groundbreaking research but he did not think winning it was the primary goal for scientists. "Individual researchers probably don't look at themselves as potential Nobel Prize winners when they're at work," Jornvall told The Associated Press. "They get their kicks from their research and their interest in how life functions." In 2006, Blackburn, of the University of California, San Francisco, and Greider, of Johns Hopkins University in Baltimore, shared the Lasker prize for basic medical research with Jack Szostak of Harvard Medical School. Their work set the stage for research suggesting that cancer cells use telomerase to sustain their uncontrolled growth.

单选题The U.S. faces severe economic problems.

单选题She was a puzzle. A. girl 　 B. woman C. problem D. mystery

单选题The boy is{{U}} intelligent. {{/U}}