单选题Without his glasses, he's ______ to smash into a tree.

单选题Eileen：I like your speech．It’s very impressive． Val：Thanks．______ A．I advise you to try it some time，too． B．And I appreciate your support． C．It is worthwhile doing something． D．You’re kidding．

单选题被誉为启蒙主义最杰出的现实主义戏剧家是( )。

单选题Changes in climate ______ slowly through the years.

单选题He is quite sure that it's ______ impossible for him to fulfill the task within two days. A. roughly B. exclusively C. fully D. absolutely

单选题 Paper is different from other waste produce because it comes from a sustainable resource: trees. {{U}} {{U}} 1 {{/U}} {{/U}}the minerals and oil used to make plastics and metals, trees are {{U}} {{U}} 2 {{/U}} {{/U}}. Paper is also biodegradable, so it does not pose as much threat to the environment when it is discarded. {{U}} {{U}} 3 {{/U}} {{/U}}45 out of every 100 tonnes of wood fibre used to make paper in Australia comes from waste paper, the rest comes directly from virgin fibre from forests and plantations. By world standards this is a good {{U}} {{U}} 4 {{/U}} {{/U}}since the world-wide average is 33 percent waste paper. Governments have encouraged waste paper collection and {{U}} {{U}} 5 {{/U}} {{/U}}schemes and at the same time, the paper industry has responded by developing new recycling technologies that have {{U}} {{U}} 6 {{/U}} {{/U}}even greater utilization of used fibre. {{U}} {{U}} 7 {{/U}} {{/U}}, industry's use of recycled fibres is expected to increase at twice the rate of virgin fibre over the coming years. Already, waste paper {{U}} {{U}} 8 {{/U}} {{/U}}70% of paper used for packaging and advances in the technology {{U}} {{U}} 9 {{/U}} {{/U}}to remove ink from the paper have allowed a higher recycled {{U}} {{U}} 10 {{/U}} {{/U}}in newsprint and writing paper. To achieve the benefits of recycling, the community must also {{U}} {{U}} 11 {{/U}} {{/U}}. We need to accept a change in the quality of paper products; {{U}} {{U}} 12 {{/U}} {{/U}}stationery may be less white and {{U}} {{U}} 13 {{/U}} {{/U}}a rougher texture. There also needs to be {{U}} {{U}} 14 {{/U}} {{/U}}from the community for waste paper collection programs. Not only do we need to make the paper {{U}} {{U}} 15 {{/U}} {{/U}}to collectors but it also needs to be separated into different types and sorted from contaminants such as staples, paperclips, string and other miscellaneous {{U}} {{U}} 16 {{/U}} {{/U}}. There are technical {{U}} {{U}} 17 {{/U}} {{/U}}to the amount of paper which can be recycled and some paper products cannot be collected for reuse. These include paper {{U}} {{U}} 18 {{/U}} {{/U}}books and permanent records, photographic paper and paper which is badly contaminated. The four most common {{U}} {{U}} 19 {{/U}} {{/U}}of paper for recycling are factories and retail stores which gather large amounts of packaging material {{U}} {{U}} 20 {{/U}} {{/U}}goods are delivered, also offices which have unwanted business documents and computer output, paper converters and printers and lastly households which discard newspapers and packaging material. The paper manufacturer pays a price for the paper and may also incur the collection cost.

单选题If you want to see a combination of Eastern and Western art, you can go to see______.

单选题The fee for getting information from BDU should be paid______.

单选题Community cancer clusters are viewed quite differently by citizen activists than by epidemiologists. Environmentalists and concerned local residents, for instance, might immediately suspect environmental radiation as the culprit when a high incidence of cancer cases occurs near a nuclear facility. Epidemiologists, in contrast, would be more likely to say that the incidences were "inconclusive" or the result of pure chance. And when a breast cancer survivor, Lorraine Pace, mapped 20 breast cancer cases occurring in her West Islip, Long Island, community, her rudimentary research efforts were guided more by hope that a specific environmental agent could be correlated with the cancers than by scientific method. When epidemiologists study clusters of cancer cases and other noncontagious conditions such as birth defects or miscarriage, they take several variables into account, such as background rate (the number of people affected in the general population), cluster size, and specificity (any notable characteristics of the individual affected in each case). If a cluster is both large and specific, it is easier for epidemiologists to assign blame. Not only must each variable be considered on its own, but it must also be combined with others. Lung cancer is very common in the general population. Yet when a huge number of cases turned up among World War II shipbuilders who had all worked with asbestos, the size of the cluster and the fact that the men had had similar occupational asbestos exposures enabled epidemiologists to assign blame to the fibrous mineral. Although several known carcinogens have been discovered through these kinds of occupational or medical clusters, only one community cancer cluster has ever been traced to an environmental cause. Health officials often discount a community's suspicion of a common environmental cause because citizens tend to include cases that were diagnosed before the afflicted individuals moved into the neighborhood. Add to this the problem of cancer's latency. Unlike an infectious disease such as cholera, which is caused by a recent exposure to food or water contaminated with the cholera bacterium, cancer may have its roots in an exposure that occurred 10 to 20 years earlier. Do all these caveats mean that the hard work of Lorraine Pace and other community activists is for nothing? Not necessarily. Together with many other reports of breast cancer clusters on Long Island, the West Islip situation highlighted by Pace has helped epidemiologists lay the groundwork for a well designed scientific study.

单选题Joanne: Hey, you look concerned. ______ Harry: The final exam. I"m not fully prepared yet.

单选题 The Main Library has five floors open to the public. FOURTH FLOOR: Social Sciences & History. 300--399, 650--659, 900--999. Law books are shelved in a separate area--follow signs for the Law Library. THIRD FLOOR: Humanities. 100--199, 200---299, 400--499, 700--709 & 800--899. SECOND FLOOR: Science and Technology. 500--599, 600--649 & 660--699. FIRST FLOOR: Current (unbound) Periodicals. An information point is inside the Periodicals Office. GROUND FLOOR: Reference. General reference books and bibliographies. The Reference Librarians on each floor are available to answer queries during office hours. At other times you can ask at the Issue Desk, on the Ground Floor. Books are shelved according to size= normal size and large size. The shelves are color coded to help you identify them: RED Large books WHITE Normal size books YELLOW Large periodicals BLUE Normal size periodicals Books returned the previous day may be on the Recent Returns shelves, next to the Reference Librarians' desks.

单选题A national debate is now ______ about whether we should replace golden weeks with paid vacations. A. in the way B. by the way C. under way D. out of the way

单选题Peter: What's there to do at night? Clerk: There are clubs, concerts, players and so on.______! A. You make it R You find it C. You manage it D. You name it

单选题 The way people hold to the belief that a fun filled pain free life equals happiness actually reduces their chances of ever attaining real happiness. If fun and pleasure are equal to happiness, then pain must be equal to unhappiness. But in fact, the opposite is true: more often than not things that lead to happiness involve some pain. As a result, many people avoid the very attempts that are the source of true happiness. They fear the pain inevitably brought by such things as marriage, raising children, professional achievement, religious commitment (承担的义务), self-improvement. Ask a bachelor (单身汉) why he resists marriage even though he finds dating to be less and less satisfying. If he is honest he will tell you that he is afraid of making a commitment. For commitment is in fact quite painful. The single life is filled with fun, adventure, excitement. Marriage has such moments, but they are not its most distinguishing features. Couples with infant children are lucky to get a whole night's sleep or a three day vacation. I don't know any parent who would choose the word fun to describe raising children. But couples who decide not to have children never know the joys of watching a child grow up or of playing with a grandchild. Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating realizations. It liberates time: now we can devote more hours to activities that can genuinely increase our happiness. It liberates money: buying that new car or those fancy clothes that will do nothing to increase our happiness now seems pointless. And it liberates us from envy: we now understand that all those who are always having so much fun actually may not be happy at all.

单选题The tomato juice left brown______on the front of my jacket. A. spot B. point C. track D. trace

单选题What does the word "novel" probably mean in Par

单选题If you want to borrow books about American history, which floor would you go to? ______.

单选题Human beings are animals. We breathe, eat and digest, and reproduce the same life (3) common to all animals. In a biological laboratory, rats, monkeys and humans seem very much the same. However, biological understanding is not enough: (2) itself, it can never tell us what human beings are. (3) to our physical equipment the naked human body—we are not an (4) animal. We are tropical creatures, (5) hairless and sensitive to cold. We are not fast and have neither claws nor sharp teeth to defend ourselves. We need a lot of food but have almost no physical equipment to help us get it. In the purely physical (6) , our species seems a poor (7) for survival. But we have survived—survived and multiplied and (8) the earth. Some day we will have a (9) living on the moon, a place with neither air nor water and with temperatures that turn gases into solids. How can we have done all these things? Part of the answer is physical. (10) its limitations, our physical equipment has some important potentials.

单选题The teacher warned that whoever was caught ______ during the test would be punished. A. cheat B. cheating C. to cheat D. to be cheating