单选题______ country in the world should do her best to keep the world peace.

单选题 Evidence is widespread that HIV-infected persons slow to ______ their unsafe behavior.

单选题A variety of significant, attractive short-term benefits will drive the development of modern self-sufficient homes. These include security from severe weather, climate changes, and natural disasters; security from infectious diseases and related health problems; a fresh and nutritious diet; a dependable food supply; and security from global unrest. But the real benefit of Earth Homes will be the long-term sustainability of our planet. It should be no secret that the planet is experiencing unusual weather and climate abnormalities. The 10 hottest years in recorded history have all been in the last 15 years; the 1990s were the hottest decade on record. The Midwestern heat wave of 1995 killed 669 people in Chicago. In 1996, we had a season of record heat spells, and 1997 was the single wan nest year on record--until 1998 shattered global temperature records. Record-high temperatures throughout the southern United States during the summer of 1998 forced the shutdown of Walt Disney World's water parks because of the threat of a viral encephalitis outbreak. The United Nations and insurers blame unusual weather for thousands of deaths and billions of dollars in damage. Many scientists agree that the emissions resulting from human activities are substantially increasing the atmospheric concentration of the greenhouse gases. These increases will enhance the greenhouse effect, resulting in warming of the earth's surface. In 1990, scientists predicted that, if greenhouse gas emissions are not sharply decreased, we might experience a 1C to 3C rise in global temperatures. They suggested that we would have to cut in half our use of coal, oil, and gas in order to lower our emissions enough to maintain concentrations of greenhouse gases at the current levels. Proof of warning includes a decrease in the amount of snow that covers the Northern Hemisphere, a simultaneous decrease in Arctic sea ice, continued melting of alpine glaciers, and a rise in sea level. Rain has even been reported for the first time in Antarctica, and an ice-free patch of ocean about a mile wide has recently opened near the North Pole. Meanwhile, studies have shown that the carbon dioxide concentration in our atmosphere has been steadily increasing since 1958. Even though the rate of emissions from fossil fuels has been reduced, concentration has risen consistently. In 1995, the size of the ozone hole over Antarctica doubled to about the size of Europe. For the first time in recorded history, the hole stretched over populated areas, exposing residents in southern Chile and Argentina to very high levels of ultraviolet (UV) radiation. Studies have shown that a 1% decrease in ozone in the stratosphere produces a 2% increase in UV radiation reaching the ground, posing more risks to humans.

单选题But, in our enthusiasm to discover our heritage, we are ruining the very scenery we go to enjoy, damaging natural habitats, ______ down footpaths, disturbing wildlife, polluting the air and dropping litter.

单选题下面的短文后列出了10个句子，请根据短文的内容对每个句子作出判断：如果该句提供的是正确信息，选择A；如果该句提供的是错误信息，选择B；如果该句的信息文中没有提及，选择C。在答题卡相应位置上将答案选项涂黑。Setting Effective Goals　　Avital Schweitzer, 17, is clearly goal directed.She works hard to achieve

单选题The author's attitude toward Richard Lamm's remark is one of ______.

单选题Cancer is the world's top 'economic killer' as well as its likely leading cause of death. Cancer costs more in 26 and lost life than AIDS, malaria, the flu and other diseases that spread person-to-person. Chronic diseases including cancer, heart disease and diabetes 27 for more than 60 percent of deaths worldwide but less than 3 percent of public and private 28 for global health, said Rachel Nugent of the Center for Global Development, a Washington-based policy research group. Money shouldn't be taken away from fighting diseases that 29 person-to-person, but the amount 30 to cancer is way out of whack (重击) with the impact it has, said Otis Brawley, the cancer society's chief medical officer. Cancer's economic toll (损耗) was $895 billion in 2008—equivalent to 1.5 percent of the world's gross 31 product, the report says. That's in terms of disability and years of life lost—not the cost of treating the disease, which wasn't addressed in the report. Many groups have been pushing for more attention to non-infectious causes of death, and the United Nations General Assembly has set a meeting on this a year from now. Some policy experts are 32 it to the global initiative that led to big increases in spending on AIDS nearly a decade ago. 'This needs to he discussed at the UN—how we are going to deal with this rising burden of 33 disease', said Dr. Andreas Ullrich, medical officer for cancer control at WHO. Researchers used the World Health Organization's death and disability reports, and economic data from the World Bank. They 34 disability-adjusted life years, which reflect the impact a disease has on how long and how 35 people live. A. productively B. supplying C. shifting D. spread E. account F. funding G. calculated H. devoted I. productivity J. chronic K. comparing L. domestic M. doubtful N. clumsily O. disability

单选题From the stories which exemplify Roosevelt' s affection for his family members, we can infer that ______.

单选题People who disagree with women's opinions believe ______.

单选题June came and the hay （干草） was almost ready for cutting. On Midsummers Eve, which was a Saturday, Mr. Jones went into Willington and got so drunk at the Red Lion that he did not come back until m

单选题 Coronary heart attacks occur more commonly in those with high blood pressure, in the obese, in the cigarette smokers, and in those ______ to prolonged emotional and mental strain.

单选题In the Chinese household, grandparents and other relatives play ______ roles in raising children.

单选题Every modern government, liberal or otherwise, has a specific position in the field of ideas; its stability is {{U}}vulnerable{{/U}} to critics in proportion to their ability and persuasiveness.

单选题There are a great many books, web sites, and training 24 today more or less dedicated to the idea that being bored is a major sin, for which the only 25 is to find ways to be busy and productive every waking moment. People who follow this 26 are constantly on-the-go—and feelings of boredom quickly smothered with yet more activities. At work, at home, at play, each 27 must be filled with things to ward off the slightest possibility of being bored. As a society, we're over-stimulated to the point of mania, like hyper-excited children in those few moments at a party before it all goes wrong and everyone starts crying. I suspect the rise in ADHD isn't only 28 to eating strange chemicals in the diet; we're training ourselves to require continual distraction, reducing our attention-span to less than a few seconds before we're bored again. It used to be only teenagers who 29 . 'I'm so bored!' Now almost everyone acts as if not having something truly exciting to do every moment is either the first sign of senility or—much wore—positive proof that they, and their 30 are gone, past it, over the hill, on the way towards oblivion. Yet boredom is, in reality, crucial to any ability to be truly productive, let 31 effective. If you're fiat-out busy and engaged all the time, you may feel important, but the reality is 32 . It's those who are constantly 33 with activities that are most likely to be headed towards a nasty let-down. A. alone B. careers C. courses D. cure E. different F. dissatisfied G. distracted H. due I. felt J. idea K. moment L. sighed M. thanks N. time O. way

单选题 The dawn of the oil age was fairly recent. Although the stuff was used to waterproof boats in the Middle East 6,000 years ago, extracting it in earnest began only in 1859 after an oil strike in Pennsylvania. It was used to make kerosene, the main fuel for artificial lighting after overfishing led to a shortage of whale blubber. Other liquids produced in the refining process, too unstable or smoky for lamplight, were burned or dumped. But the unwanted petrol and diesel did not go to waste for long, thanks to the development of the internal-combustion engine a few years later. Since then demand for oil has, with a couple of {{U}}blips{{/U}} in the 1970s and 1980s, risen steadily alongside ever-increasing travel by car, plane and ship. Three-fifths of it ends up in fuel tanks. With billions of Chinese and Indians growing richer and itching to get behind the wheel of a car, the big oil companies, the International Energy Agency (IEA) and America's Energy Information Administration all predict that demand will keep on rising. We believe that they are wrong, and that oil is close to a peak. This is not the "peak oil" widely discussed several years ago, when several theorists, who have since gone strangely quiet, reckoned that supply would flatten and then fall. We believe that demand, not supply, could decline. In the rich world oil demand has already peaked: it has fallen since 2005. Even allowing for all those new drivers in Beijing and Delhi, two revolutions in technology will dampen the world's thirst for the black stuff. The first revolution was led by a man from Texas who has just died. George Mitchell championed "fracking" as a way to release huge supplies of "unconventional" gas from shale (a smooth soft rock) beds. This, along with vast new discoveries of conventional gas, has recently helped increase the world's reserves from 50 to 200 years. The other great change is in automotive technology. Rapid advances in engine and vehicle design also threaten oil's dominance. Foremost is the efficiency of the internal-combustion engine itself. Petrol and diesel engines are becoming ever more frugal. Not surprisingly, the oil "supermajors" and the IEA disagree. They point out that most of the emerging world has a long way to go before it owns as many cars, or drives as many miles per head, as America. But it would be foolish to predict from the rich world's past to booming Asia's future. The sorts of environmental policies that are reducing the thirst for fuel in Europe and America by imposing ever-tougher fuel-efficiency standards on vehicles are also being adopted in the emerging economies.

单选题 It is necessary that something urgent ______ to combat smuggling.

单选题Waiter: ______. Customer: A peanut butter pancake, together with the meal, please.

单选题Like some foreigners, I ask a lot of questions, some of which are insultingly silly. But everyone I ______ has answered those questions with patience and honesty.

单选题The computer can ______ stored information in a matter of minutes.