单选题The young trees ______ before they grow up. A. must be taken good care of B. may take good care of C. should taken good care of

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单选题It just isn't fair ______ I was working as a waiter last month, my friends were lying on the beach. A. while B. though C. for D. where

单选题As the volcano erupts in Iceland, more and more people are beginning to concern about the damage volcanic eruption brings. Then, let us learn the influence of volcanic eruption together. We all know that air pollution has an effect on the world's average air temperature. Scientists declare that volcanic eruption leads to weather changes, which is similar to air pollution. How will volcanic eruption impact on weather? Volcanic eruption throws hundreds of millions tons of ash into the stratosphere. The ash from a volcano spreads in a few days. However, this is not the end. The ash will remain in the air for years. Hereby, all the ash turns incoming solar radiation into space, which cools the earth. The eruption would affect every level of ecosystem, from worms to primates. The problem is not only the physical destruction of habitat, but also the sulfur gases over the area. The volcanic eruption makes many people homeless who have to search for food and residence everywhere. The movement of the population and refugees may lead to some instability in the region. They may become one part to damage the environment in face of starvation threat. If the lava pours into lakes, the water will be severely contaminated. The unusual accumulation of carbon dioxide in the lower strata of lake's basin may even cause explosions. The volcanic eruption is a huge disaster for human beings. It will cause massive dislocation in the local place. The Iceland volcano is a good example. More than 63,000 flights had been canceled in 23 European countries, which is severe blow on the economy. Travelers had to give up their journeys. Fresh foods get decayed because of delayed transportation. The factories are not able to operate for lack of machinery parts. In other parts of the world, people canceled their flights to and from Europe, according to the Air Transport Association (ATA). This condition has an awful influence on the world economy. Large quantities of dust and gaseous material will be injected into the upper atmosphere as a result of explosive eruptions. The volcano spurts a kind of glassy material with sharp edges, which is cooled by tiny shards of molten rock. The air is mixed with such material at a microscopic level. As a result, it will contribute to a worldwide rise in deaths of respiratory diseases.

单选题China"s corruption crackdown is helping fuel a second-hand luxury market. As fur coats and Swiss watches fall out of vogue among China"s elites, another luxury sector is quietly thriving. The second-hand luxury market has seen a jump this year, according to a survey of stores by Fortune Character Institute, a Chinese luxury lifestyle publication. China"s second-hand luxury stores range from independent boutiques to chains like Hong Kong"s Milan Station or Japan"s Brand Off, both of which have stores on the mainland. Online operations have sprung up too, such as Secoo.com, which has around 600,000 registered users. Second-hand designer goods can cost as little as a third of their original price. On Secco, a Louis Vuitton bag sells for 2,750 yuan or ＄450, compared to a retail price of 8,350 RMB. Rare or limited-edition items can even fetch more second-hand than the original price. According to the FCI survey of about 200 second-hand luxury shops in Beijing, Shanghai and Guangzhou, sales totalled about 3 billion yuan (＄490 million) in the first half of 2013. That"s pretty small compared to China"s overall luxury market, worth about ＄13 billion in 2012 according to Bain & Company. But it"s a 30% jump from the year before. FCI posits that the second-hand luxury market could grow 20% this year, which is about how much sales in China"s traditional luxury sector grew in 2012. (Analysts are expecting the traditional luxury sector to grow a measly 5% to 7% this year.) The number of second-hand stores has grown too, to a little over 800, from just over 500 last year. "Stores have been setting up in smaller cities like Changsha, Hangzhou and Chengdu as well as in larger, wealthier urban centers," the publication said. While China"s austerity campaign and the increasing check of officials" behavior by Chinese bloggers are likely helping, second-hand stores have been around for a while, as a way for wealthy Chinese to sell off unwanted goods. Pawn shops began appearing in the country in the 1990s and copycat stores of Milan Station, the second-hand luxury chain from Hong Kong, were all over the country by 2011. Today, second-hand stores always see extra business after the holidays when the most "gifting" occurs. Another explanation is that as more Chinese travel abroad—especially in Asia where second-hand luxury stores have been popular for years, such as in Japan and South Korea—they"ve become more accepting of the idea of wearing someone else"s expensive hand-me-downs.

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单选题 As Eleanor Roosevelt once said, "Universal human rights begin in small places, close to home." And Tolerance.org, a Web site from the Southern Poverty Law Center, is helping parents across the country create homes in which tolerance and understanding are guiding themes. "The goal of nurturing open-minded, empathetic children is a challenging one," says Jennifer Holladay, director of Tolerance. org. "To cultivate tolerance, parents have to instill in children a sense of empathy, respect and responsibility—to oneself and to others—as well as the recognition that every person on earth is a treasure." Holladay offers several ways parents can promote tolerance: Talk about tolerance. Tolerance education is an ongoing process; it cannot be captured in a single moment. Establish a high comfort level for open dialogue about social issues. Let children know that no subject is taboo. Identify intolerance when children are exposed to it. Point out stereotypes and cultural misinformation depicted in movies, TV shows, computer games and other media. Challenge bias when it comes from friends and family members. Do not let the moment pass. Begin with a qualified statement: "Andrew just called people of XYZ faith 'lunatics.' What do you think about that, Zoe?" Let children do most of the talking. Challenge intolerance when it comes from your children. When a child says or does something that reflects biases or embraces stereotypes, confront the child: "What makes that joke funny, Jerome?" Guide the conversation toward internalization of empathy and respect—"Mimi uses a walker, honey. How do you think she would feel about that joke?" or "How did you feel when Robbie made fun of your glasses last week?" Support your children when they are the victims of intolerance. Respect children's troubles by acknowledging when they become targets of bias. Don't minimize the experience. Provide emotional support and then brainstorm constructive responses. For example, develop a set of comebacks to use when children are the victims of name-calling. Create opportunities for children to interact with people who are different from them. Look critically at how a child defines "normal." Expand the definition. Visit playgrounds where a variety of children are present—people of different races, socioeconomic backgrounds, family structures, etc. Encourage a child to spend time with elders—grandparents, for example. Encourage children to call upon community resources. A child who is concerned about world hunger can volunteer at a local soup kitchen or homeless shelter. The earlier children interact with the community, the better. This will help convey the lesson that we are not islands unto ourselves. Model the behavior you would like to see. As a parent and as your child's primary role model, be consistent in how you treat others. Remember, you may say, "Do as I say, not as I do," but actions really do speak louder than words.

单选题What can be inferred form the passage?

单选题Driving through snowstorm on icy roads for long distances is a most nerve-racking experience. It is a paradox that the snow, coming (21) gently, blowing gleefully in a high wind, all the while (22) down a treacherous carpet, freezes the windows, (23) the view. The might of automated man is (24) The horses, the powerful electrical systems, the deep-tread tires, all go (25) nothing. One minute the road feels (26) , and the next the driver is sliding over it, light as a (27) , in a panic, wondering what the heavy trailer trucks coming up (28) the rear are going to do. The trucks are like (29) when you have to pass them, not at sixty or seventy (30) you do when the road is dry, but at twenty-five and thirty. (31) their engines sound unnaturally loud. Snow, slush and (32) of ice spray from beneath the wheels, obscure the windshield, and rattle (33) your car. Beneath the wheels there is plenty of (34) for you to slide and get mashed to a pulp. Inch (35) inch you move up, past the rear wheels, the center wheels, the cab, the front wheels, all (36) too slowly by. Straight ahead you continue, (37) to cut over sharply would send you into a slip, (38) in front of the vehicle. At last, there is enough (39) , and you creep back over, in front of the truck now, but (40) the sound of its engine still thundering in your ears.

单选题 A great deal of attention is being paid today to the so-called digital divide--the division of the world into the info(information)rich and the info poor. And that divide does exist today. My wife and I lectured about this looming danger twenty years ago. What was less visible then, however, were the new, positive forces that work against the digital divide. There are reasons to be optimistic. There are technological reasons to hope the digital divide will narrow. As the Internet becomes more and more commercialized, it is in the interest of business to universalize access-after all, the more people online, the more potential customers there are. More and more governments, afraid their countries will be left behind, want to spread Internet access. Within the next decade or two, one to two billion people on the planet will be netted together. As a result, I now believe the digital divide will narrow rather than widen in the years ahead. And that is very good news because the Internet may well be the most powerful tool for combating world poverty that we've ever had. Of course, the use of the Internet isn't the only way to defeat poverty. And the Internet is not the only tool we have. But it has enormous potential. To take advantage of this tool, some impoverished countries will have to get over their outdated anti-colonial prejudices with respect to foreign investment. Countries that still think foreign investment is an invasion of their sovereignty might well study the history of infrastructure (the basic structural foundations of a society) in the United States. When the United States built its industrial infrastructure, it didn't have the capital to do so. And that is why America's Second Wave infrastructure--including roads, harbors, highways, ports and so on--were built with foreign investment. The English, the Germans, the Dutch and the French were investing in Britain's former colony. They financed them. Immigrant Americans built them. Guess who owns them now? The Americans. I believe the same thing would be true in places Like Brazil or anywhere else for that matter. The more foreign capital you have helping you build your Third Wave infrastructure, which today is an electronic infrastructure, the better off you're going to be. That doesn't mean lying down and becoming fooled, or letting foreign corporations run uncontrolled. But it does mean recognizing how important they can be in building the energy and telecom infrastructures needed to take full advantage of the Internet.

单选题The word "scouts" ( Line 8, Para. 2) probably means" ______.

单选题What does" brain drain" ( Line 4, Paragraph 4) mean?

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单选题Environmental issues raise a host of difficult ethical questions, including the ancient one of the nature of intrinsic value. Whereas many philosophers in the past have agreed that human experiences have intrinsic value and the utilitarians at least have always accepted that the pleasures and pains of non-human animals are of some intrinsic significance, this does not show why it is so bad if dodos become extinct or a rainforest is cut down. Are these things to be regretted only' because of the loss to humans or other sentient creatures.9 Or is there more to it. than that? Some philosophers are now prepared to defend the view that trees, rivers, species (considered apart from the individual animals of which they consist), and perhaps ecological systems as a whole have a value independent of the instrumental value they may have for humans or other sentient creatures. Our concern for the environment also raises the question of our obligations to future generations. How much do we owe to the future? From a social contract view of ethics or for the ethical egoist, the answer would seem to be: nothing. For we can benefit them, but they are unable to reciprocate.. Most other ethical theories, however, do give weight to the interests of coming generations. Utilitarians, for one, would not think that the fact that members of future generations do not exist yet is any reason for giving less consideration to their interests than we give to our own. provided only that we are certain that they will exist and will have interests that will be affected by what we do. In the case of. say, the storage of radioactive wastes, it seems clear that what we do will indeed affect the interests of generations to come. The question becomes much more complex, however, when we consider that we can affect the size of future generations by the population policies we choose and the extent to which we encourage large or small families. Most environmentalists believe that the world is already dangerously over-crowded. This may well be so, but the notion of overpopulation conceals a philosophical issue that is ingeniously explored by Derek Parfit in Reasons and Persons (1984). What is optimum population? Is it that population size at which the average level of welfare will be as high as possible? Or is it the size at which the total amount of welfare — the average multiplied by the number of people — is as great as possible? Both answers lead to counter-intuitive outcomes, and the question remains one of the most baffling mysteries in applied ethics.

单选题 {{I}}Questions 17-20 are based on the following passage. You now have 20 seconds to read questions 17-20.{{/I}}