单选题[此试题无题干]

单选题 I made a promise to myself ______ this year

单选题Questions 1 to 10 are based on the following passage.Although interior design has existed since the beginning of architecture, its development into a____1____field is really quite recent.Interior desi

单选题. Questions 5 to 8 are based on the conversation you have just beard.5.

单选题 Connie was told that if she worked too hard

单选题Questions 1 to 5 are based on the following passage.Scientists have found that eating dark chocolate appears to lower the risk of depression by four fold.While 7.6 percent of the 13,000 people surveye

单选题《复合题被拆开情况》 Why does social media trigger feelings of loneliness and inadequacy? Because instead of being real life, it is, for the most part, impression management, a way of marketing yourself, carefu

单选题. Now listen to the following recording and answer questions 16 to 19.1.

单选题Questions 1 to 5 are based on the following passage.Why has crime in the U.S.declined so dramatically since the 1990s?Economists and sociologists have offered a bounty of reasons, including more polic

单选题. Questions 16 to 18 are based on the recording you have just heard.1.

单选题9. They are ______ investors who always make thorough investigations both on local and international markets before making an investment.

单选题. Questions 1 to 4 are based on the conversation you have just heard.1.

单选题. Google recently introduced a new service that adds social-networking features to its popular Gmail system. The service is called Buzz, and within hours of its release, people were howling about privacy issues—because, in its original form, Buzz showed everyone the list of people you e-mail most frequently. Even people who weren't cheating on their spouses or secretly applying for new jobs found this a little unnerving. Google backtracked and changed the software, and apologized for the misstep, claiming that, it just never occurred to us that people might get upset. "The public reaction was something we did not anticipate. But we've reacted very quickly to people's unhappiness," says Bradley Horowitz, vice president for product management at Google. Same goes for Facebook. In December, Facebook rolled out a new set of privacy settings. A spokesman says the move was intended to "empower people" by giving them more "granular (颗粒)" control over their personal information. But many viewed the changes as a sneaky attempt to push members to expose more information about themselves—partly because its default settings had lots of data, like your photo, city, gender, and information about your family and relationships, set up to be shared with everyone on the Internet. (Sure, you could change those settings, but it was still creepy.) Facebook's spokesman says the open settings reflect "shifting social norms around privacy." Five years after Facebook was founded, he says, "we've noticed that people are not only sharing more information but also are becoming more comfortable about sharing more information with more people." Nevertheless, the changes prompted 10 consumer groups to file a complaint with the Federal Trade Commission. What's happening is that our privacy has become a kind of currency. It's what we use to pay for online services. Google charges nothing for Gmail; instead, it reads your e-mail and sends you advertisements based on keywords in your private messages. The genius of Google, Facebook, and others is that they've created services that are so useful or entertaining that people will give up some privacy in order to use them. Now the trick is to get people to give up more—in effect, to keep raising the price of the service. These companies will never stop trying to chip away at our information. Their entire business model is based on the notion of "monetizing" our privacy. To succeed they must slowly change the notion of privacy itself—the "social norm," as Facebook puts it—so that what we're giving up doesn't seem so valuable. Then they must gain our trust. Thus each new erosion of privacy comes delivered, paradoxically, with rhetoric (华丽的词藻)about how Company X really cares about privacy. I'm not sure whether Orwell would be appalled or impressed. And who knew Big Brother would be not a big government agency, but a bunch of kids in Silicon Valley?1. According to the passage, the original form of Buzz______.

单选题 The Spanish team, who are now in superb form

单选题 Thomas Jefferson and John Adams died on July 4

单选题. Exciting new research indicates that growing older might not necessarily mean growing mentally slower. New studies are providing breakthroughs in our understanding of how aging affects memory, language, and other cognitive functions. This information could provide tools for lessening or even averting some loss in brain functioning often associated with old age. If science can help older citizens retain their mental abilities longer, then the whole nation would benefit. That's why it is so important for research on the aging mind to flourish. The government should make studying neural health, the role of life experiences in shaping the brain, and the structure of the aging mind—key priorities in these years. And the National Institute on Aging should undertake major research initiatives in these areas to expand the scientific basis for understanding and promoting healthy mental aging. Revolutionary advances in neuron-science, behavioral science, and the science of learning have opened the door for the development of new techniques and technologies that can preserve mental sharpness in older people. These might be as novel as transplanting genetically engineered cells to replace disfunctional neurons or as familiar as engaging in stimulating intellectual and physical activities. As many jokes about losing brain cells illustrate, it has long been thought that age-related decline in cognitive abilities is a result of diminishing neurons and synapses. But scientists have discovered that as people grow old, a drop in certain mental abilities may have more to do with changes in the health of the nervous system. For example, the mild loss of memory that is often associated with growing old may be linked to biochemical shifts in neurons rather than to actual loss of brain cells. Research aiming at identifying the mechanisms that maintain or impair neural health is critical for advancing our knowledge of aging. In addition, exciting studies under way around the country are exploring the degree to which older people can benefit from certain kinds of mental practice. We are only beginning to understand the pliability of cognitive functioning in people who are already old, but the promise of finding ways to maintain abilities is very real. For example, studies indicate that our life experiences can bring about lasting changes in our brains that shape how we age. Aging people with college or postgraduate degrees, for instance, generally have better cognitive functioning, such as language and reasoning than those with less education. And better-educated people who reach their 80s—when much of the decline in brain functioning typically occurs—experience far fewer cognitive problems than their less-educated peers. Scientists believe that formal education and professional training lead to more dense and complex associations among neurons that maintain functions even when those associations weaken.1. In the past, what did people think of the growing older and growing mentally slower? ______

单选题. For thousands of years man has exploited and often destroyed the riches of land. Now man covets(觊觎) the wealth of the oceans. Even the most conservative estimates of resources in the seabed stagger the imagination. In the millions of miles of ocean that touch a hundred nations live four of five of living things on earth. In the seabed, minerals and oil existed in lavish supply. Man may yet learn to use a tiny fraction of this wealth. However, this fraction alone could set off a new age of colonial war unless international law soon determines how it shall be shared. What is to be done to regulate and control exploitation of the oceans is a problem of international concern. In crowded England, serious plans have been developed to build entire cities just off the coast. Offshore airport may solve the demand for large tracts near such large coastal cities as New York and Los Angeles. Some people, quick to take advantage of the legal confusion that reigns beyond coastal waters, have planned to build independent islands at the top of reefs outside the county's territorial limit—that is indeed, a romantic notion, but one with, it is suspected, the more prosaic aim of avoiding the constrictions of domestic law concerning gambling and taxes. In another case, the United Nations were presented with an application for permission to extract minerals from the bed of Red Sea in an area 50 miles from the coastal states. The secretariat dodged this thorny question, citing lack of authority to act. Such claims are no longer isolated or meaningless. The great wealth from the oceans must be divided equitable among nations. But wealth is not the only thing at debate. We must also learn how to protect the oceans from the threat of pollution. A few years ago, "practical" men dismissed speculations about wealth in the sea. "That is economic foolishness," they said. It will never be economically profitable to exploit the seabeds, no matter how great the riches to be found there. Unfortunately, they underestimated the lure of gold as the mother of invention. Yet the pessimists may be proved right. In these pioneer years of the Ocean Age, the damage done sometimes seems to exceed the benefit gained. Beaches from England to Puerto Rico to California have been soaked in oily mud. Insecticides, seeping into the rivers and then oceans, have killed fish and birds and revived fears that some chemicals may contaminate our waters when they are used as garbage dumps. Largely in ignorance, we are tinkering with our greatest source of life.1. The first paragraph states that ______.