单选题I sat near the entrance for a long time Uexpecting/U him, but he didn't arrive.

单选题Loud noises can annoying. A. hateful B. painful C. horrifying D. irritating

单选题Medical bills in the United States have risen violently since 1960's and steps need to be taken to reverse this trend or the average American will not be able to afford medical care. The major factor in increasing the cost of medical care has been the dramatic increase in the cost of hospital services. The rise in the cost of hospitalization can be only partly blamed on inflation (通货膨胀)since hospital bills in the last two decades have risen at a considerably higher rate than inflation. Another factor cited by doctors as a major cause for the increase in the cost of medical care is malpractice(治疗错误). Increasingly large awards for malpractice have caused doctors to increase their rates to cover the higher malpractice insurance. Because of the large malpractice awards, doctors are also prescribing more conservative and more extensive and therefore more costly treatment for patients as a defense against malpractice claims. Whatever the causes of the wild increases in the cost of medical care are, the government needs to take strong action before it is too late for Americans.

单选题There is no {{U}}risk{{/U}} to public health．

单选题A storm moved directly over the island, demolishing buildings and flooding streets.

单选题Foreign military aid was prolonging the war. A. broadening B. worsening C. extending D. accelerating

单选题The salesman approached the house {{U}}cautiously{{/U}} because of the vicious dog.

单选题The body thieves contributed in their gruesome way to

单选题It has taken many years to adopt internationally recognized standards for the licensing of aircraft pilots.A. dataB. criteriaC. committeesD. flags

单选题 阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 {{B}} Happy Marriage, Happy Heart{{/B}} Happily married people have lower blood pressure {{U}}(51) {{/U}} unhappily married people or singles, a Brigham Young University study says. On the other hand, even having a supportive social network did not translate into a blood pressure benefit for singles or unhappily {{U}}(52) {{/U}}. people, according to the study. "There seem to be some unique health benefits from marriage. It's not just being married {{U}}(53) {{/U}} benefits health - what's really the most protective of health is having a happy {{U}}(54) {{/U}}," study author Julianne Holt-Lunstad, a psychologist who specializes in relationships and health, said in a prepared statement. The study included 204 married and 99 {{U}}(55) {{/U}} adults who wore portable blood-pressure monitors for 24 hours. The {{U}}(56) {{/U}} recorded blood pressure at random intervals" and provided a total of about 72 readings. "We wanted to capture participants' blood pressure doing whatever they normally {{U}}(57) {{/U}} in everyday life. Getting one or two readings in a clinic is not really {{U}}(58) {{/U}} of the fluctuations that occur throughout the day,"4 Holt-Lunstad said. Overall, happily married people scored four points {{U}}(59) {{/U}} on the blood pressure readings than single adults. The study also found that blood {{U}}(60) {{/U}} among married people -- especially those in happy marriages- {{U}}(61) {{/U}} more during sleep than in single people. "Research has shown that people whose blood pressure remains high throughout the night are at {{U}}(62) {{/U}} greater risk of heart disease than people whose blood pressure drops," Holt-Lunstad said. The study was published in the March 20 {{U}}(63) {{/U}} of the journal Annals of Behavioral Medicine. The study also found that unhappily married 'adults have higher blood pressure than {{U}}(64) {{/U}} happily married and single adults. Holt-Lunstad noted that married couples can encourage healthy habits in one {{U}}(65) {{/U}}, such as eating a healthy diet and having regular doctor visits. People in happy marriages also have a source of emotional support, she said.

单选题Will you {{U}}look through{{/U}} my essay, please, to find out whether I made any mistakes?

单选题He has been granted (asylum) in France.

单选题Thick clouds obscured the stars from view. A. darkened B. held C. blackened D. prevent

单选题 A Trip Every year New Zealanders living in London can be seen loading up Kombi vans and heading off to experience the "classic European holiday". The trip usually starts in the north of France, after crossing the channel from Dover in England to Calais, driving down through France, over the Pyrenees into Spain, west into Portugal and then across the Continent to Italy and often beyond. There are numerous reasons young New Zealanders take this rite of passage—as well as seeing all the fantastic sights and tasting the delights of Europe's food and wine, it's relatively inexpensive. The Kombi is transport and accommodation all in one, cutting down significantly on costs. There is just one problem. As the Kombis become "antique", these trips are usually punctuated with numerous roadside sessions as the van sits idle, in no hurry to start, while you swelter in the hot sun. But do not let this deter you. Travelling Europe in your own vehicle means no public transport schedules to cramp your style, the ability to explore the quaint, off-the-beaten-track villages where the "real" locals live, freedom to not have to book accommodation in advance—you can nearly always get a campsite and can load your vehicle with cheap, fantastic regional wines and souvenirs. With these bonuses in mind, here are some suggestions for planning the great Europe road adventure. The key to a pleasurable driving experience is a good navigator and a driver with a cool head. If you do not feel relaxed driving around New Zealand's cities and highways, then you probably will not enjoy driving around Europe. As copilot to the driver, you need to read (and understand) maps, look out for turn-offs and keep the music playing. Language is not a big problem once a few essential terms are mastered. The biggest challenge is in the cities, where traffic can be chaotic and elaborate one-way systems and narrow, cobbled alleyways can make finding your destination hard work. It can be easier to leave the vehicle on the outskirts of town or in a camping ground and use public transport. This also avoids paying for costly parking.

单选题She gave us an ambiguous answer.

单选题Sleep Lets Brain File Memories To sleep. Perchance to file? Findings published online this week by the Proceedings of the National Academy of Sciences further support the theory that the brain organizes and stows memories formed during the day while the rest of the body is catching zzz's. Gyorgy Buzsaki of Rutgers university and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically, they examined the electrical activity emanating from the somatosensory neocortex (an area that processes sensory information) and the hippocampus, which is a center for learning and memory. The scientists found that oscillation in brain waves from the two regions appear to be intertwined. So-called sleep spindles (bursts of activity from the neocortex) were followed tens of milliseconds later by beats in the hippocampus known as ripples. The team posits that this interplay between the two brain regions is a key step in memory consolidation. A second study, also published online this week by the Proceedings of the National Academy of Sciences, links age-associated memory decline to high glucose levels. Previous research had shown that individuals with diabetes suffer from increased memory problems. In the new work, Antonio Convit of New York University School of Medicine and his collaborators studied 30 people whose average age was 69 to investigate whether sugar levels, which tend to increase with age, affect memory in healthy people as well. The scientists administered recall tests, brain scans and glucose tolerance tests, which measure how quickly sugar is absorbed from the blood by the body's tissues. Subjects with the poorest memory recollection, the team discovered, also displayed the poorest glucose tolerance. In addition, their brain scans showed more hippocampus shrinkage than those of subjects better able to absorb blood sugar. "Our study suggests that this impairment may contribute to the memory deficits that occur as people age. " Convit says. "And it raises the intriguing possibility that improving glucose tolerance could reverse some age-associated problems in cognition" Exercise and weight control can help keep glucose levels in check, so there may be one more reason to go to the gym.

单选题A red flag was placed there as a token of danger.

单选题Though he was born and brought up in Japan, he can speak good English.A. smoothB. fluentC. fluidD. flowing

单选题In 1925 Clarence Darrow competently opposed William Jennings Bryan at the renowned Scopes' "Monkey Trial".A. adeptlyB. maliciouslyC. privatelyD. rashly

单选题We"ll do all we can to assist you.