单选题First, the spotted owl was threatened by logging in the Pacific Northwest. Now it's in danger from a new enemy, the barred owl. Barred owls have been moving to the Northwest from the eastern part of the United States. Stan Sovern has studied spotted owls. Now when he calls for spotted owls, barred owls are starting to appear. Sovern threw a mouse on the ground, and a barred owl grabbed it. Scientists have learned that spotted owls start to vanish when barred owls come. Some barred and spotted owls have mated and produced hybrid babies. One spotted owl was killed by a barred owl. Professor Ned K. Brown of the University of California-Berkeley says, "In some areas of Washington, the barred owls moved into very dense, deep woods. The same kind of woods that are opened up, or destroyed by logging, that adversely influences the spotted owls." Ten years have passed since the federal government began protecting the spotted owl. Loggers were forced to limit logging on seven million acres of government land. No one is sure how the arrival of the barred owls will impact laws that protect spotted laws. The barred owls like to live in the deep forests where loggers like to cut down trees. The barred owls will likely keep migrating to the Northwest.

单选题This is a nice car but we cannot ______it.A. provideB. affordC. supplyD. manage

单选题It ______ John and Kate who helped me the other day.

单选题His health failing, ______ in 1995.

单选题In fact, there was hardly any activity or social event that could not be set to Music. Weddings, births, christening, funerals, picnics, parades- (21) had their musical accompaniment. After the American Civil War (1860-1865), the Negroes had gained their freedom and were ready (22) a new type of music, (23) that would preserve their musical traditions but be fast and happy (24) their (25) freedom. They wanted something they could play as professional musicians for both black and white audiences. Jazz was the answer. It combined themes from Negro work songs, spirituals and blues, set to a fast beat, (26) the musicians improvising (即兴而作) as they went along, like the funeral marching bands. To be good, a musician had not only to remember his part but also (27) able to invent new variations on the spur (激励) of the moment. Jazz (28) the people, but popular (29) is changed many times in form, style, and tempo. Each change added something (30) .

单选题The two passengers ______ the crash and were given emergency treatment at the scene of the crash.

单选题It's no use _______  with a drunken man.

单选题We can't ______ one to change the habits of a lifetime in a short time. A. hope B. wait C. expect D. imagine

单选题The best title of this passage is ______.

单选题The idea that, if your house is built in the right position, this may affect your success in life seems strange to many people. However, to believers in Feng-Shui, or the art of geomancy, not only the position but also the choice of decorations and even the color of your home can mean the difference between good fortune and disaster. This art has been practiced for centuries in China and is still used all over South East Asia. Even the huge Hong Kong banks call in a geomant if they are planning to build new offices. They have such faith in his knowledge that if he advises them to move, they will alter their plans for even their biggest buildings. Like many Oriental beliefs the geomant's skill depends on the idea of harmony in nature. If there is no imbalance between the opposing forces of Yin and Yang, the building will bring luck to its inhabitants. This means that the house must be built on the right spot as well as facing the right direction, and also be painted an auspicious color. For instance, if there are mountains to the north, this will protest them from evil influences. If the house is painted red, this will bring happiness to the occupants while green symbolizes youth and will bring long life. Other factors, such as the owner's time and date of birth, are taken into account, too. The geomant believes that unless all these are considered when choosing a site for construction, the fortune of the people using it will be at risk. Indeed, to ignore the geomant's advice can have fatal results. The death of the internationally famous Kung-Fu star, Bruce Lee, has been used as an example. It is said that when Lee found out that the house he was living in was an unlucky one, he followed a geomant's advice and installed an eight-sided mirror outside his front door to bring him luck. Unfortunately, a storm damaged the mirror and the house was left unprotected from harmful influences. Soon afterwards Lee died in mysterious circumstances. Not only is Feng-Shui still used in South East Asia, but it has also spread right across the world. Even in modern New York a successful commercial artist called Milton Glaser has found it useful. He was so desperate after his office was broken into six times that he consulted a geomant. He was told to install a fish tank with six black fish and fix a red clock to the ceiling. Since then he has not been burglarized once. It may seem an incredible story, but no other suitable explanation has been offered.

单选题Is technology changing our brains? A new study adds to a growing body of research that says it is. According to the study, a 27 shift in how we gather information and communicate with one another has touched off an era of rapid evolution that may 28 change the human brain as we know it. The impact of technology on our brain should not come as a 29 . Professional musicians have more gray matter in brain regions 30 for planning finger movements. And athletes' brains are bulkier in areas that 31 hand-eye coordination. That's because the more time you devote to a specific activity, the stronger the neural (神经系统的) pathways responsible for executing that activity become. So it makes 32 that people who process a constant stream of digital information would have more neurons dedicated to filtering (过滤) that information. To see how the Internet might be rewiring us, the brains of 24 adults were 33 as they performed a simulated Web search, and again as they read a page of text. During the Web search, those who reported using the Internet 34 in their everyday lives showed twice as much signaling in brain regions responsible for decision-making and complex reasoning, compared with those who had 35 Internet exposure. The findings suggest that Internet use enhances the brain's 36 to be stimulated, and that Internet reading activates more brain regions than printed words. A. abundant F. limited K. scarcely B. capacity G. monitored L. sense C. control H. regularly M. stability D. dramatic I. responsible N. surprise E. immediately J. restrain O. ultimately

单选题 Most of us tend to think that attractive people are always at an advantage in life and enjoy far more opportunities than average-looking or unattractive people, especially when it comes to employment. But a new study suggests this perception is actually not the case for all jobs. Beautiful people are less likely to land menial jobs or positions that involve uninteresting work. The study published Tuesday in the Journal of Personality and Social Psychology finds being beautiful is a liability when it comes to seeking out less desirable positions, which is proof that attractive people don't get everything they want. The researchers found people interviewing and hiring for these jobs favor unattractive candidates because they perceived attractive candidates would be dissatisfied with the pay and the work. The findings are based on a series of experiments that involved more than 750 people. They included university students and hiring managers. The researchers showed the hiring managers profiles that included photos of potential candidates (one attractive and one not so much). The researchers asked the hiring managers a series of questions that were meant to assess their perceived attractiveness. They also asked the participants which candidate they were more likely to hire for the low-paying positions that included warehouse worker, customer service representative and housekeeper versus more appealing jobs such as manager, project director and an IT internship (实习生). The researchers found that the hiring managers' decisions were driven by their belief that the nice-looking candidates would be unhappy and unsatisfied with the menial jobs and maybe even less likely to do the work. The researchers were surprised by this, since previous research has shown that attractive people always have an edge with employment, such as a study in which researchers sent 1100 fake resumes to employers to fill advertised vacancies. They found 54 percent of attractive women were contacted while 47 percent of attractive men received calls, according to the Independent. On the other hand, only 7 percent of unattractive women and 26 percent of unattractive men were contacted by potential employers. The authors of the new study suggest their findings should be considered when it comes to creating policies about job discrimination. This conclusion is likely to be laughable to unattractive people who have landed jobs but didn't win the genetic lottery.

单选题Some plants are very _________ to light; they prefer the shade.

单选题One of the most damaging plant parasites is the stem eelworm.

单选题After dinner the minister made a short ________ at the press conference.

单选题When Mr. Green retired his son ______ the business from him.

单选题Of the many opinions expressed to the council members by the various citizens' group present, ______ was the only opinion that mattered. A. their B. their one C. theirs D. they

单选题If I found the book, I ______ it to you.

单选题Her dress has ______ because of the strong sunlight.

单选题Many citizens appealed to the city government for enacting ______ laws to protect the consumers.