单选题The development of staff cohesion and a sense of team effort in the workplace can be effectively _______by the use of humor.

单选题 Resistance to the 1954 United States Supreme Court decision terminating segregation placed the schools in the middle of a bitter and sometimes violent dispute. By 1965, when a measure of genuine integration had become a reality in many school districts, tile schools again found themselves in the eye of a stormy controversy. This time the question was not which children were going to what schools but what kind of education society should provide for the students. The goal of high academic performance, which had been revived by criticisms and reforms of the 1950s and early 1960s, began to be challenged by demands for more liberal and free schooling. Many university and some high-school students from all ethnic groups and classes had been growing more and more frustrated--some of them desperately so--over what they felt was a cruel and senseless war in Vietnam and a cruel, discriminatory, competitive, loveless society at home. They demanded curriculum reform, improved teaching methods, and greater stress and action on such problems as overpopulation, pollution, international strife, deadly weaponry, and discrimination. Pressure for reform came not only from students but also from many educators. While students and educators alike spoke of the greater need for what was taught, opinions as to what was relevant varied greatly. The blacks wanted new textbooks in which their people were recognized and fairly represented, and some of them wanted courses in black studies. They, and many white educators, also objected to culturally biased intelligence and aptitude tests and to academic college entrance standards and examinations. Such tests, they said, did not take into account the diverse backgrounds of students who belonged to ethnic minorities and whose culture was therefore different from that of the white middle-class student. Whites and blacks alike also wanted a curriculum that touched more closely on contemporary social problems and teaching methods that recognized their existence as individual human beings rather than as faceless robots competing for grades. Alarmed by the helplessness and hopelessness of the urban ghetto schools, educators began to insist on curricula and teaching methods flexible enough to provide for differences in students' social and ethnic backgrounds. Moreover, for educational reformers the urban ghetto school became a symbol of a general failure of American education to accomplish the goal of individual development. Also reminiscent of those decades were the child-centered schools that sprang up in the later 1960s as alternatives to and examples for tile traditional schools. The clash between the academically and the humanistically oriented schools of thought, therefore, was in many ways one more encounter in the continuing battle between conservative and liberals.

单选题Science suggests that the greater part of an optimistic outlook can be ______ with the right instruction.

单选题{{B}}Passage 1{{/B}} "Dimpy," as her friends call her, heard about the hazards of smoking in health class. "They showed pictures of lungs of people who smoked. It was gross," says the petite 14-year-old. Yet, as she shops along the Third Street Promenade in Santa Monica, Calif. , the ninth grader points out all the places where she regularly buys cigarettes without hassle. "All my friends smoke," She shrugs, explaining the habit she developed in the sixth grade. "Once they pressure you, you start. And it's kind of hard to stop. " As the cigarette industry draws increasing fire, teen smokers like Dimpy are becoming the focus of concerned policy makers around the country. Supported by a University of Michigan study showing a dramatic rise in adolescent tobacco use, the White House is considering ways to curb the surge. Among the options: eliminating cigarette vending machines, restricting tobacco advertising, increasing the federal excise tax on cigarettes and launching a national media campaign directed at adolescents. A grand jury in New York has begun an investigation to determine whether Philip Moms Cos. concealed information linking nicotine levels and addictiveness. And the Justice Department is looking into whether tobacco company executives committed perjury in their April 1994 congressional testimony on how smoking affects health. Lack of credibility. But it's tough to get an antismoking message through to teens. The California Department of Health Service spends $12 million a year placing antismoking commercials on television, including popular MTV programs, but many teenagers aren't buying the message. Says Erica leona, who will enter eighth grade in the fail, "I don't think those ads work, because It's like a cartoon, it's too exaggerated. " In fact, teens seem skeptical about the potential effectiveness of any organized efforts to reduce smoking, like increasing taxes. While research shows that every time taxes go up, sales go down, including among teens, young people say the cost is relatively low in comparison with.other vices. "You want weed, it'll cost you," says Robert Caldwell, 14. "For cigarettes, you just go anywhere, put 12 quarters into one of those machines, take it and go. " Other teens maintain that eliminating vending machines won't make cigarettes any harder to buy. "You give a guy enough to buy you a pack and a beer, and he'll buy the pack," says Cameron Davis, 13. And advertising isn't really what entices adolescents to smoke. For the most part, they say, teens smoke because of peer pressure. "It's like sex. " says 13-year-old Frances, who started smoking at age 9. "You feel like, if you don't do it with your boyfriend, he won't like you. " In addition, messages that relate to health don't compute with adolescents, who often feel invincible. It doesn't help, says Roxanne Cannon, editorial director of Teen and Sassy magazines, that so many teen idols such as Ethan Hawke, Jason Priestley and Luke Perry are seen smoking. Teens say any message is more effective if it's communicated by Other kids. But eyen a White House appeal made by Chelsea Clinton might not get through to adolescents eager to smoke. "I don't listen to my morn when she tells me to stop," says Dimpy. "Why would I listen to anyone else."

单选题The police ______ to emergencies in just a few minutes when the accident happened.

单选题Humans should not develop their economy at the ______ of the ecological environment.

单选题Your headache is likely to ______ if its real cause is not identified and proper treatment should be administered accordingly.

单选题Who won the World Cup 1994 football game? What happened at the United Nations? How did the critics like the new play? 1 an event takes place, newspapers are on the street 2 the details. 3 anything happens in the world, reporters are on the spot to gather the news. Newspapers have one basic 4 , to get the news as quickly as possible from its source, from those who make it to those who want to 5 it. Radio, telegraph, television, and 6 inventions brought competition for newspapers. So did the development of magazines and other means of communication. 7 , this competition merely spurred the newspapers on. They quickly made use of the newer and faster means of communication to improve the 8 and thus the efficiency of their own operations. Today more newspapers are 9 and read than ever before. Competition also led newspapers to 10 out into many other fields. Besides keeping readers informed of the latest news, today"s newspapers entertain and influence readers about politics and other important and serious 11 . Newspapers influence readers" economic choices 12 advertising. Most newspapers depend on advertising for their very 13 . Newspapers are sold at a price that 14 even a small fraction of the cost of production. The main 15 of income for most newspapers is commercial advertising. The 16 in selling advertising depends newspaper"s value to advertisers. This 17 in terms of circulation. How many people read the newspaper? Circulation depends 18 on the work of the circulation department and on the services or entertainment 19 in a newspaper"s pages. But for the most part, circulation depends on a newspaper"s value to readers as a source of information 20 the community, city, county, state, nation and world—and even outer space.

单选题Swarms of ants are always invading my kitchen. They are a thorough ______.

单选题The new guppies I bought have just a Utinge/U of yellow.

单选题Visiting a National Park can be relaxing, inspiring, but it can also be disturbing. As you drive into Rocky Mountain National Park, and you will see starving elk, damaged meadows and dying forests. Our parks are growing old because we have mistakenly protected them from natural processes, such as fire, predation, and insects. We believed that we were saving these remnants of wild America, but actually we have "protected" them to death. If we want to save our National Parks, the National Park Service must change its management priorities to prevent over population of animals and to restore natural process in the forest in order to prevent their stagnation and "death" by old age. We must act soon: our parks are dying of old age because we have altered the forces in nature that keep them young and strong. By tracing the history of our National Parks, we can understand the problem and see why we need active management. In the early part of the 20th century, settlers exploited wildlife heavily, resulting in neat-extinction of many species. Therefore, several National Parks were established by Congress primarily to save endangered animals. However, stricter wildlife protection laws and improved wildlife management techniques resulted in greater populations of animals overcrowding in areas of high concentration, such as the Yellowstone elk herds. Complicating the problem, the National Park Service in the early part of the 20th century adopted a policy of aggressive predator elimination, thus reducing natural wildlife population control. Subsequently, elk and deer populations exploded in many National Parks, resulting in severe damage to native vegetation. Vigorous forest fire and insect suppression in the National Parks through out the 20th century further altered the natural environment by allowing forests t6 over-mature, without natural thinning processes. Park managers thought that they were protecting the land, but actually they were removing important controls from the forest ecosystems. Clearly, we must act immediately if we want to pass down to our children and grandchildren the green legacy of our National Parks: we must step in and restore the natural processes which we have altered through our well-intentioned, but misguided, policies in the past.

单选题Every object in the universe,______large or small, has a tendency to move towards every other object.

单选题In the last few minutes the conversation has become seemingly ______ as if the discussion were of some minor domestic matter and not survival itself.(2003年3月中国科学院考博试题)

单选题Within the bounds of given data, the biographer seeks to illuminate factual information about a person and transform it into insight.

单选题Artists in the period of Renaissance had the advantage of being able to study Roman and Greek literature and sculpture because ______.

单选题Her written English was wonderful, and she had a (n) ______ vocabulary for a freshman.

单选题The meal he served to the guests was rather ______.

单选题Both parties promised to ______ the contract to be signed the following day. A. keep with B. tangle with C. adhere to D. devote to

单选题In calculating the daily calorie requirements for an individual, variations in body size, physical activity and age should be______.