单选题Questions 11-13 are based on the following monologue. You now have 15 seconds to read Questions 11-13.

单选题America university students are usually under pressure of work because _______.

单选题

单选题[此试题无题干]

单选题Ireland is divided into two political parts as [A] Northern Ireland and Southern Ireland. [B] Southern Ireland and the Repubiic of Ireland. [C] The Republic of Ireland and Northern Ireland. [D] Northern Ire[and and Britain.

单选题Bacteria are microscopic organisms which live on the surface of objects. They are one of the most ancient living things, which exist on this planet for nearly 4,000 million years. Do you know the size of bacteria? It can only be measured in microns. Maybe you have not a standard in your mind how long a micron is. One micron is a thousandth of a millimeter, which equals about the diameter of a pinhead. Therefore, even if we enlarged the rounded bacterium a thousand times, it would only be the size of a pinhead. We barely see bacteria by a magnification an ordinary microscope of 100 times, even if we try, we cannot make out anything of their structure. There are normally millions of them together, for they can multiply really fast. Scientists have found that some bacteria have attached to wavy-looking "hairs" called flagella. The flagella rotate, pushing the bacteria through the water. Others can glide along over surfaces by some little-understood mechanism. Bacteria are so small that they are influenced by the movements of the chemical molecules around them. They are active all the time. Even the bacteria without flagella often bound about in the water. They are pushed here and there, colliding with the watery molecules. Bacteria cannot be detected because they don't produce bad odor or change the color or texture of the food. Therefore, when people eat the food with many bacteria, they are likely to get hepatitis A, acute gastroenteritis and a host of other illnesses. Many households have refrigerators to prevent from bacteria. Of course, freezing food slows or stops the growth of bacteria, however, when food is thawed, the bacteria will become reactivated. Bacteria can not be totally destroyed before the food is thoroughly cooked. We need to know that not all bacteria are in connection with illness. Just some bacteria can cause disease. They are called pathogenic bacteria. Fortunately our immune system can protect us from them. Bacteria are prokaryotes ( single cells that do not contain a nucleus). It may seem weird to classify organisms according to such details, but with or without a nucleus is not trivial at all. The division between prokaryotes and eukaryotes (all organisms with a nucleus inside their cells) is of extreme importance in biology, and is the result of a major evolutionary breakthrough. Visit our program tomorrow if you want to know more, thank you.

单选题What is the theme of the passage?

单选题is the last sentence, the word "they" refers to ______.

单选题 Questions 17--20 are based on the following dialogue. You now have 20 seconds to read Questions 17--20.

单选题 Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened {{U}} {{U}} 1 {{/U}} {{/U}}. As was discussed before, it was not {{U}} {{U}} 2 {{/U}} {{/U}}the 19th century that the newspaper became the dominant pre-electronic {{U}} {{U}} 3 {{/U}} {{/U}}, following in the wake of the pamphlet and the book and in the {{U}} {{U}} 4 {{/U}} {{/U}}of the periodical. It was during the same time that the communications revolution {{U}} {{U}} 5 {{/U}} {{/U}}up, beginning with transport, the railway, and leading {{U}} {{U}} 6 {{/U}} {{/U}}through the telegraph, the telephone, radio, and motion pictures {{U}} {{U}} 7 {{/U}} {{/U}}the 20th-century world of the motor car and the air plane. Not everyone sees that process in {{U}} {{U}} 8 {{/U}} {{/U}}. It is important to do so. It is generally recognized, {{U}} {{U}} 9 {{/U}} {{/U}}, that the introduction of the computer in the early 20th century, {{U}} {{U}} 10 {{/U}} {{/U}}by the invention of the integrated circuit during the 1960s, radically changed the process, {{U}} {{U}} 11 {{/U}} {{/U}}its impact on the media was not immediately {{U}} {{U}} 12 {{/U}} {{/U}}. As time went by, computers became-smaller and more powerful, and they became "personal" too, as well as {{U}} {{U}} 13 {{/U}} {{/U}}, with display becoming sharper and storage {{U}} {{U}} 14 {{/U}} {{/U}}increasing. They were thought of, like people, {{U}} {{U}} 15 {{/U}} {{/U}}generations, with the distance between generations much {{U}} {{U}} 16 {{/U}} {{/U}}. It was within the computer age that the term "information society" began to be widely used to describe the {{U}} {{U}} 17 {{/U}} {{/U}}within which we now live. The communications revolution has {{U}} {{U}} 18 {{/U}} {{/U}}both work and leisure and how we think and feel both about place and time, but there have been {{U}} {{U}} 19 {{/U}} {{/U}}view about its economic, political, social and cultural implications. "Benefits" have been weighed {{U}} {{U}} 20 {{/U}} {{/U}}"harmful" outcomes. And generalizations have proved difficult.

单选题{{B}}Text 4{{/B}} Queuse are long. Life is short. So why waste time waiting when you can pay someone to do it for you? In Washington D.C. -- a city that struggles with more than its share of bureaucratic practices -- a small industry is emerging that will queue for you to get everything from a driver's license to a seat in a congressional hearing. Michael Dorsey, one of the pioneering" service expediters", began going to traffic courts for other people back in 1988. Today his fees start at $ 20 and can go into the thousands to plead individual cases at the Bureau of Traffic Adjudication( his former employer). Mr. Dorsey knows what properly written parking ticket looks like, and often gets fines invalidated on its failures in formality. His clients include congressmen and diplomats, as well as firms for which tickets are an occupational hazard, such as taxi operators and television broadcasters. Service expediters are not universally loved. Non-tax income, like fines and fees, makes up about 7% of local-government revenue in Washington. Mr. Dorsey alone relieves that fund of $150, 000 a year. Meanwhile, citizen advocacy groups keep complaining about expediters such as the Congressional Services Company and CVK Group that specialise in saving places for congressional hearings. Committees hearing hot topics such as energy regulation often do not have enough seat. Why should a well-heeled lobbyist who has paid $ 30 an hour to a professional place-holder grab the place? Critics say this perpetuates a two-layered system :the rich get good government service, but the poor still have to wait. This seems a little harsh. Service expeditors can hardly be blamed for creating the unfair system they profit from. Anyway, it's not only rich corporate types who benefit from their services. Poor foreigners with little English hire expediters to navigate the ticket-fighting process;so do elderly and disabled people who want to save time on errands that require long hours standing in line. And, who knows, the service expediters might even shame the bureaucrats into pulling their socks up. Back in 1999 ,Washington's mayor, Tony Williams, promised to liberate citizens from the tyranny of the government queue. Things have gotten a bit better, but the 20-minute task of renewing a driver's license can still take days. Hiring an expert to confront the bureaucratic beast on your behalf takes care of that.

单选题 In a democratic society citizens are encouraged to form their own opinions on candidates for public offices, taxes, constitutional amendments, environmental concerns, foreign policy, and other issues. The opinions held by any population are shaped and manipulated by several factors: individual circumstances, the mass media, special-interest groups, and opinion leaders. Wealthy people tend to think differently on social issues from poor people. Factory workers probably do not share the same views as white-collar workers, non-union workers. Women employed outside their homes sometimes have perspectives different from those of full-time homemakers. In these and other ways individual status shapes one's view of current events. The mass media, especially television, are powerful influences on the way people think and act. Government officials note how mail from the public tends to "{{U}}follow the headlines{{/U}}". Whatever is featured in newspapers and magazines and on television attracts enough attention that people begin to inform themselves and to express opinions. The mass media have also created larger audiences for government and a wider range of public issues than existed before. Prior to television and the national editions of newspapers, issues and candidates tended to remain localized. In Great Britain and West Germany, for example, elections to the national legislatures were usually viewed by voters as local contests. Today's elections are seen as struggles between party leaders and programs. In the United States radio and television have been beneficial to the presidency. Since the days ot Franklin D. Roosevelt and his "fireside chats", presidents have appealed directly to a national audience over the heads of Congress to advocate their programs. Special-interest groups spend vast sums annually trying to influence public opinion. Public utilities, for instance, tried to sway public opinion in favor of nuclear power plants. Opposed to them were citizens' organizations successful advertising campaign designed to prevent the passage of medicare. Opinion leaders are usually such prominent public figures as politicians, some business personalities, and celebrity athletes. The opinions of these individuals, whether informed and intelligent or not, carry weight with some segments of the population. Some individuals, such as Nobel Prize winners, are suddenly thrust into public view by the media. By quickly reaching a large audience, their views gain a hearing and are perhaps influential in shaping views on complex issues.

单选题From context clues, we can guess that the word "centenary" (Para.4,line 3) means

单选题According to the passage, the author's attitude towards Turnitin's anti-plagiarism software may be said to be ______.

单选题The boy told his sister______there. [A] not to stay [B] not staying [C] didn't