单选题What is said about cell phone use in paragraph 4?

单选题阅读下面的短文，文中有15处空白，每处空白给-出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。 At the bottom of the world lies a mighty continent still wrapped in the Ice Age and, until recent times, unknown to man. It is a great land mass crisscrossed by mountain{{U}} (51) {{/U}}whose extent and elevation are still uncertain. Much of the{{U}} (52) {{/U}}is a complete blank on our maps. A 1,000-mile stretch of the coastline has never been{{U}} (53) {{/U}}by any ship. Man has{{U}} (54) {{/U}}, on foot, less than one per cent of its ares. Antarctica differs fundamentally from the Arctic regions. The Arctic is an ocean,{{U}} (55) {{/U}}with drifting packed ice and surrounded by the land masses of Europe, Asia, and North America. The Antarctic is a continent nearly as{{U}} (56) {{/U}}as Europe and Au stralia combined, centered roughly{{U}} (57) {{/U}}the South Pole and{{U}} (58) {{/U}}by the most unobstructed water areas of the world—the Atlantic, Pacific, and Indian Oceans. The continental ice{{U}} (59) {{/U}}is more than two miles high at its center; thus, the air over the Antarctic is far more refrigerated than it is over the Arctic regions. This{{U}} (60) {{/U}}air cascades off the land with such{{U}} (61) {{/U}}that it makes the nearby seas the stormiest in the world and renders{{U}} (62) {{/U}}those regions whose counterparts at the opposite end of the{{U}} (63) {{/U}}are inhabited. Thus, more than a million persons live within 2,000 miles of the North Pole in an area that{{U}} (64) {{/U}}most of Alaska, Siberia, and Scandenavia—a region{{U}} (65) {{/U}}in forest and mining industries. Except for a handful of weather stations, within the same distance of the South Pole there is not a single tree, industry, or settlement.

单选题We have never seen such gorgeous hills.

单选题The restaurant has a good reputation .

单选题Outside-the-classroom Learning Putting a group of college students in charge of a $300,000 Dance Marathon, fundraiser surely sounds a bit risky. When you consider the fact that the money is supposed to be given to children in need of medical care, you might call the idea crazy. Most student leaders don"t want to spend a large amount of time on something they care little about, said 22-year-old University of Florida student Darren Heitner. He was the Dance Marathon"s operations officer for two years. Yvonne Fangmeyer, director of the student organization office at the University of Wisconsin, conducted a survey in February of students involved in campus organizations. She said the desire for friendship was the most frequently cited reason for joining. At large universities like Fangmeyer"s, which has more than 40,000 students, the students first of all want to find a way to "belong in their own corner of campus". Katie Rowley, a Wisconsin senior, confirms the survey"s findings. "I wanted to make the campus feel smaller by joining an organization where I could not only get involved on campus but also find a group of friends." All of this talk of friendship, however, does not mean that students aren"t thinking about their résumés. "I think that a lot of people do join to " fatten up their résumés"," said Heitner. "At the beginning of my college career, I joined a few of these organizations, hoping to get a start in my leadership roles." But without passion student leaders can have a difficult time trying to weather the storms (经受风雨) that will come. For example, in April, several student organizations at Wisconsin teamed up for an event designed to educate students about homelessness and poverty. Student leaders had to face the problem of solving disagreements, moving the event because of rainy weather, and dealing with the university"s complicated bureaucracy (官僚机构). "Outside-the-classroom learning really makes a big difference," Fangmeyer said.

单选题The weather was Ucrisp/U and clear and you could see the mountains fiftymiles away.

单选题It can be regarded as the worst day in my entire life.

单选题Although originally a German innovation, kindergarten got its real start in the United States as a movement to provide an improved learning environment for children.

单选题I don't quite {{U}}follow{{/U}} what she is saying A. believe B. understand C. explain D. accept

单选题You should have Ublended/U the butter with the sugar thoroughly.

单选题Why do you want to {{U}}throw away{{/U}} those books?

单选题The heat released by burning oil and coal is the direct cause of global warming.

单选题I wonder who first Uconceived/U the idea of cutting a hole in the door.

单选题It took US. a long time to {{U}}mend{{/U}} the house. A. build B. destroy C. design D. repair

单选题We tried to {{U}}restrict{{/U}} our conversation to arguments relevant to the topic.

单选题{{B}}第二篇{{/B}} {{B}}The Net Cost of Making a Name for Yourself{{/B}} Companies are paying up to $10,000 to register a domain name on the Internet even though there is no guarantee that they will get the name they want. The task of registering domains ending in. com, org, .edu and. net is at present contracted out by the US government to the Virginia-based company Network Solutions. The contract runs out this year, and the government wants to bring in a different scheme. But last year, an ad hoc committee of the Internet's great and good revealed its own plan. This involved setting up seven new domains, each indicating the kind of business or organisation using that name. The committee recruited 88 companies around the world to act as registrars for its firm, . shop, . web, . arts, . rec, . info and. nom domains. The US government has still to give the system its blessing, and may yet push ahead with its original scheme. Despite this, the 88 registrars have been taking applications for several months. They are due to start registering names this month with the Internet Council of Registrars, which grew out of the ad hoc committee. To prevent conflicting names from being registered, the council will take one name from each registrar in mm before going back for the second name in their queues, and so on. This has led to a flourishing trade, with companies trying to buy a place near the head of the queue. Global Names of Singapore is charging $10,000 to make sure a request for a name is the first one it sends off to the central database. Other registrars are charging nonrefundable deposits for places at the top of the queue. David Maher, chairman of the Policy Oversight Committee that is helping to set up and oversee the system, says that all registrars are subject to local laws regarding consumer protection and competition. But he says that the committee "will not act as an enforcement body in this area."

单选题The FBI Uselected/U out possible traitors out of the organization.

单选题Experts Call for Local and Regional Control of Sites for Radioactive Waste The withdrawal of Nevada's Yucca Mountain as a potential nuclear waste repository has reopened the debate over how and where to dispose of spent nuclear fuel and high-level nuclear waste. In an article in the July 10 issue of Science, University of Michigan geologist Rodney Ewing and Princeton University nuclear physicist Frank von Hippel argue that, although federal agencies should set standards and issue licenses for the approval of nuclear facilities, local communities and states should have the final approval on the siting of these facilities. The authors propose the development of multiple sites that would service the regions where nuclear reactors are located. "The main goal..., should be to provide the United States with multiple process that requires acceptance by host communities and states," the authors write. Ewing and von Hippel also analyze the reasons why Yucca Mountain, selected by Congress in 1987 as the only site to be investigated for long-term nuclear waste disposal, finally was shelved after more than three decades o often controversial debate. The reasons include the site's geological problems, management problems, important changes in the Environmental Protection Agency's standard, unreliable funding and the failure to involve local communities in the decision-making process. Going forward, efforts should be directed at locating storage facilities in the nation's northeastern, southeastern, midwestern and western regions, and states within a given region should be responsible for developing solutions that suit their particular circumstances. Transportation of nuclear waste over long distances, which was a concern with the Yucca Mountain site, would be less of a problem because temporary storage or geological disposal sites could be located closer to reactors. "This regional approach would be similar to the current approach in Europe, where spent nuclear fuel and high-level nuclear waste from about 150 reactors and reprocessing plants is to be moved to a number of geological repositories in a variety of rock types," said Rodney Ewing, who has written extensively about the impact of nuclear waste management on the environment and who has analyzed safety assessment criteria for the controversial Yucca Mountain nuclear waste repository.

单选题The staffs of the company are always courteous and helpful.A. efficientB. respectableC. well-informedD. respectful

单选题Radioactive Wastes One of the major problems of nuclear energy is the inability of scientists to discover a safe way to dispose of the radioactive wastes which occur throughout the nuclear process. Many of these wastes remain dangerously active for tens of thousands of years, while others have a life span closer to a quarter of a million years. Various methods have been used to date, but all have revealed weaknesses, forcing scientists to continue their search. The nuclear process involves several stages, with the danger of radioactivity constantly present. Fuel for nuclear reactors comes from uranium ore (铀矿石), which, when mined, spontaneously produces radioactive substances as by-products. This characteristic of uranium ore went undetected for a long time, resulting in the deaths, due to cancer, of hundreds of uranium miners. The United States attempted to bury much of its radioactive waste material in containers made of steel covered in concrete and capable of holding a million gallons. For a long time it was believed that the nuclear waste problem had been solved, until some of these tanks leaked, allowing the radioactive wastes to seep into the environment. Canada presently stores its nuclear waste in underwater tanks, with the long-term effects largely unknown. However, plans are under consideration for above-ground storage of spent fuel from reactors. These plans include the building of three vast concrete containers, which would be two stories high and approximately the length and width of two football fields. Other suggestions include enclosing the waste in glass blocks and storing them in underground caverns, or placing hot containers in the Antarctic region, where they would melt the ice, thereby sinking down about a mile. This idea has since been abandoned because of the possible adverse effect on the ice sheets.