单选题The italicized phrase "under fire" (Par. 1, sentence 1) means ______.

单选题At the foot of the mountain ______.

单选题Generations of Americans have been brought up to believe that a good breakfast is essential to ones life. Eating breakfast at the start of the day, we have been told,and told again, is as necessa

单选题 The inner voice of people who appear unconscious can now be heard. For the first time, researchers have struck up a conversation with a man diagnosed as being in a vegetative (植物的) state. All they had to do was monitor how his brain responded to specific questions. 'They can now have some involvement in their destiny,' says Adrian Owen of the University of Cambridge, who led the team doing the work. In an earlier experiment, Owen's team asked a woman previously diagnosed as being in a vegetative state to picture herself carrying out one of two different activities. The resulting brain activity suggested she understood the commands and was therefore conscious. Now Owen's team has taken the idea a step further. A man also diagnosed with VS was able to answer yes and no to specific questions by imagining himself engaging in the same activities. The results suggest that it is possible to give a degree of choice to some people who have no other way of communicating with the outside world. 'We are not just showing they are conscious, we are giving them a voice and a way to communicate,' says neurologist (神经病学家) Steven Laureys of the University of Liège in Belgium, Owen's partner. Doctors traditionally base these diagnoses on how someone behaves: for example, whether they can glance in different directions in response to questions. The new results show that you don't need behavioural indications to identify awareness and even a degree of cognitive proficiency. All you need to do is tap into brain activity directly. The work 'changes everything', says Nicholas Schiff, a neurologist at Weill Cornell Medical College in New York, who is carrying out similar work on patients with consciousness disorders. 'Knowing that someone could persist in a state like this and not show evidence of the fact that they can answer yes/no questions should be extremely disturbing to our practice.' One of the most difficult questions you might want to ask someone is whether they want to carry on living. But as Owen and Laureys point out, the scientific, legal and ethical challenges for doctors asking such questions are formidable.

单选题 Directions: For this part, you are allowed 30 minutes to write an essay commenting on the remark 'Make up your mind to act decidedly and take the consequences. No good is ever done in this world by hesitation.' You can cite examples to illustrate your point. You should write at least 150 words but no more than 200 words.

单选题He often sat in a small bar drinking considerably more than ______.

单选题Mrs Edwards’s husband tried to ______.

单选题Having finished the letter, he ______ it carefully and sealed the envelop with a kiss.

单选题______couples generally share the same values and have similar lifestyles and goals.

单选题Not until the 1980's ______ in Beijing start to find ways to preserve historic buildings from destruction. A. some concerned citizens B. some concerning citizens C. did some concerning citizens D. did some concerned citizens

单选题 At the present time, 98 percent of the world energy consumption comes from stored sources, such as fossil fuels or nuclear fuel. Only hydroelectric and wood energy represent completely renewable sources on ordinary time scales. Discovery of large additional fossil fuel reserves, solution of the nuclear safety and waste disposal problems, or the development of controlled thermonuclear fusion will provide only a short-term solution to the world's energy crisis. Within about 100 years, the thermal pollution resulting from our increased energy consumption will make solar energy a necessity at any cost. Man's energy consumption is currently about one part in ten thousand that of the energy we receive from the sun. However, it is growing at a 5 percent rate, of which about 2 percent represents a population growth and 3 percent a per capita energy increase. If this growth continues, within 100 years our energy consumption will be about 1 percent of the absorbed solar energy, enough to increase the average temperature of the earth by about one degree centigrade if stored energy continues to be our predominant source. This will be the point at which there will be significant effects in our climate, including the melting of the polar ice caps, a phenomenon which will raise the level of the oceans and flood parts of our major cities. There is positive feedback associated with this process, since the polar ice cap contributes to the partial reflectivity of the energy arriving from the sun: As the ice caps begin to melt, the reflectivity will decrease, thus heating the earth still further. It is often stated that the growth rate will decline or that energy conservation measures will preclude any long-range problem. Instead, this only postpones the problem by a few years. Conservation by a factor of two together with a maintenance of the 5 percent growth rate the problem by only 14 years. Reduction of the growth rate to 4 percent postpones the problem by only 25 years; in addition, the inequities in standards of living throughout the world will provide pressure toward an increase in growth rate, particularly if cheap energy is available. The problem of a changing climate will not be evident until perhaps ten years before it becomes critical due to the nature of an exponential growth rate together with the normal annual weather variations. This may be too short a period to circumvent the problem by converting to other energy sources, so advance planning is a necessity. The only practical means of avoiding the problem of thermal pollution appears to be the use of solar energy. (Schemes to "air-condition" the earth do not appear to be feasible before the twenty-second century. ) Using the solar energy before it is dissipated to heat does not increase the earth's energy balance. The cost of solar energy is extremely favorable now, particularly when compared to the cost of relocating many of our major cities.

单选题 America's recent history has been a persistent tilt to the West—of people, ideas, commerce and even political power. California and Texas are the twin poles of the West, but very different ones. For most of the 20th century the home of Silicon Valley and Hollywood has been the brainier and trendier of the two. Texas has trailed behind: its stereotype has been a conservative Christian in cowboy boots. But twins can change places. Is that happening now? It is easy to find evidence that California is in a panic. At the start of this month the once golden state started paying creditors in IOUs (欠条). The gap between projected outgoings and income for the current fiscal (财政的) year has leapt to a horrible $ 26 billion. With no sign of a new budget to close this gulf, one credit agency has already downgraded California's debt. As budgets are cut, universities will let in fewer students, prisoners will be released early and schemes to protect the vulnerable will be rolled back. By contrast, Texas has coped well with the recession, with an unemployment rate two points below the national average and one of the lowest rates of housing repossession. In part this is because Texan banks, hard hit in the last property bust, did not overexpand this time. Texas also clearly offers a different model, based on small government. It has no state capital-gains or income tax, and a business-friendly and immigrant-tolerant attitude. It is home to more Fortune 500 companies than any other state. Despite all this, it still seems too early to hand over America's future to Texas. To begin with, that lean Texan model has its own problems. It has not invested enough in education, and many experts rightly worry about a 'lost generation' of mostly Hispanic Texans with insufficient skills for the demands of the knowledge economy. Second, it has never paid to bet against a state with as many inventive people as California. Even if Hollywood has gone into depression, it still boasts an unequalled array of sunrise industries and the most brisk venture-capital industry on the planet. The state also has an awesome ability to reinvent itself—as it did when its defence industry collapsed at the end of the cold war. The truth is that both states could learn from each other. Texas still lacks California's great universities and lags in terms of culture. California could adopt not just Texas's leaner state, but also its more bipartisan (两党的) approach to politics. There is no perfect model of government; it is America's genius to have 50 public-policy laboratories competing to find out what works best.

单选题She ______ herself bitterly for her behavior that evening. A. blamed B. accused C. reproached D. scolded

单选题It is high time we ______. A. leave B. left C. will leave D. have left

单选题It was a cold spring morning in London. People walking in the street were wearing heavy clothes. The weather had been very bad for the past week, and now many people were ill. Today there were quite a few people in the doctor's waiting room. There were still a few minutes before the doctor started seeing the patients (患者). A man of about seventy years old was at the front of the queue (排队). He did not live in this city. He came from a farm north of London, he was here to visit his daughter who was a secretary in a big company. He wanted to see the doctor because of his back problem. Soon an Indian (印度人) came into the waiting room, and walked straight to the doctor's door. When he saw this, the old man stood up and took hold of his arm. He said slowly, "We were all here before you. You must wait for your mm. Do... you... understand?" The Indian answered, "No, Sir. You don't understand! You're all after me! I am the doctor!/

单选题All of the plants now raised on farms have been developed from plants ______ in the wild. A. once they grew B. that once grew C. they grew once D. once grew

单选题Yesterday you were acclaimed; today you are ______.Isn't life full of ups and downs? A. lauded B. censured C. savored D. appraised

单选题More than thirty people are______in this event.