单选题Prof. Flynn found no students in the lecture hall when he arrived. Only then did he realize that he came ________ early.

单选题It is a wise father that knows his own child, but today a man can boost his paternal (fatherly) wisdom—or at least confirm that he"s the kid"s dad. All he needs to do is shell out $30 for paternity testing kit (PTK) at his local drugstore—and another $120 to get the results. More than 60,000 people have purchased the PTKs since they first become available without prescriptions last years, according to Doug Fog, chief operating officer of Identigene, which makes the over-the-counter kits. More than two dozen companies sell DNA tests directly to the public, ranging in price from a few hundred dollars to more than $2500. Among the most popular: paternity and kinship testing, which adopted children can use to find their biological relatives and latest rage a many passionate genealogists—and supports businesses that offer to search for a family"s geographic roots. Most tests require collecting cells by swabbing saliva in the mouth and sending it to the company for testing. All tests require a potential candidate with whom to compare DNA. But some observers are skeptical, "There is a kind of false precision being hawked by people claiming they are doing ancestry testing." says Trey Duster, a New Y0rk University sociologist. He notes that each individual has many ancestors—numbering in the hundreds just a few centuries back. Yet most ancestry testing only considers a single lineage, either the Y chromosome inherited through men in a father"s line or mitochondrial DNA, which a passed down only from mothers. This DNA can reveal genetic information about only one or two ancestors, even though, for example, just three generations back people also have six other great-grandparents or, four generations back, 14 other great-great-grandparents. Critics also argue that commercial genetic testing is only as good as the reference collections to which a sample is compared. Databases used by some companies don"t rely on data collected systematically but rather lump together information from different research projects. This means that a DNA database may have a lot of data from some regions and not others, so a person"s test results may differ depending on the company that processes the results. In addition, the computer programs a company uses to estimate relationships may be patented and not subject to peer review or outside evaluation.

单选题Although some schools are postponing new projects because of the faltering economy, others are forging ahead with plans to emulate freshman programs that have long existed at some of the nation"s oldest colleges.

单选题A number of researchers have examined the variables/strategies that affect students' learning English as a second language. This report identifies some of the learner variables/ strategies used by two students in a Hong Kong Technical Institute. The instruments for data collection included observation, interviews and questionnaires. The findings are discussed and some implications highlighted. What makes a "good" language learner "good", and what makes a "poor" language learner "poor"? What does this imply for the teaching of language in the Hong Kong context? These are the central questions of this assignment. The existing body of research attributes the differences between language learners to learner variables and learner strategies. Learner variables include such things as differences in personality, motivation, style, aptitude and age (Ellis, 1986: Chap. 5) and strategies refer to "techniques, approaches, or deliberate actions that students take in order to facilitate the learning and recall of both linguistic and content area information" (Chabot, 1987: 71). It is important to note here that what we are considering is not the fact that language learners do and can learn, but why there should be such variations in speed of learning, ability to use the target language, and in achieving examination grades, areas which generally lead to the classification of students as being either "good" or "poor". Learner variables and strategies have been the focus of a number of research projects, (O'Malley et al, 1985, Oxford, 1989). However, to the best of my knowledge, this area has not been researched in Hong Kong classrooms. Since I am a teacher of English working in Hong Kong, gleaning a little of what learner variables and strategies seem to work for local students seems to be a fruitful area of research. In discussing learner variables and strategies, we have to keep in mind the arbitrary nature of actually identifying these aspects. As the existing research points out, it is not possible to observe directly qualities such as aptitude, motivation and anxiety. (Oxford, 1986). We cannot look inside the mind of a language learner and find out what strategies, if any, they are using. These strategies are not visible processes. Also, as Naiman and his colleagues (1978) point out, no single learning strategy, cognitive style or learner characteristic is sufficient to explain success in language learning. The factors must be considered simultaneously to discover how they affect success or failure in particular language learning situation. Bearing these constraints in mind, the aim of this assignment is to develop two small scale studies of the language learners attempting to gain an overall idea of what strategies are in use and what variables seem to make a difference to Hong Kong students.

单选题The word "deterrent"(Line 1, Para. 3) most probably means" ______ ".

单选题The question of whether war is inevitable is one which has concerned many of the world's great writers. Before considering this question, it will be useful to introduce some related concepts. Conflict, defined as opposition among social entities directed against one another, is distinguished from competition, defined as opposition among social entities independently striving for something which is in inadequate supply. Competitors may not be aware of one another, while the parties to a conflict are. Conflict and competition are both categories of opposition, which has been defined as a process by which social entities function in the disservice of one another. Opposition is thus contrasted with cooperation, the process by which social entities function in the service of one another. These definitions are necessary because it is important to emphasize that competition between individuals or groups is inevitable in a world of limited resources, but conflict is not. Conflict, nevertheless, is very likely to occur, and is probably an essential and desirable element of human societies. Many authors have argued for the inevitability of war from the premise that in the struggle for existence among animal species, only the fittest survive. In general, however, this struggle in nature is competition, not conflict. Social animals, such as monkeys and cattle, fight to win or maintain leadership of the group. The struggle for existence occurs not in such fights, but in the competition for limited feeding areas and for the occupancy of areas free from meat-eating animals. Those who fail in this competition starve to death or become victims to other species. This struggle for existence does not resemble human war, but rather the competition of individuals for jobs, markets, and materials. The essence of the struggle is the competition for the necessities of life that are insufficient to satisfy all. Among nations there is competition in developing resources, trades, skills, and a satisfactory way of life. The successful nations grow and produce efforts to expand territory at the expense of others, and thus lead to conflict, it cannot be said that war-like conflict among nations is inevitable, although competition is.

单选题While he was in the office he______ doing something to doing nothing.

单选题At least since the Industrial Revolution, gender roles have been in a state of transition. As a result, cultural scripts about marriage have undergone change. One of the more obvious (31) has occurred in the roles that women (32) . Women have moved into the world of work and have become adept at meeting expectations in that arena, (33) maintaining their family rules of nurturing and creating a(n) (34) that is a haven for all family members. (35) many women experience strain from trying to "do it all," they often enjoy the increased (36) that can result from playing multiple roles. As women's roles have changed, changing expectations about men's roles have become more (37) . Many men are relinquishing their major responsibility (38) the family provider. Probably the most significant change in men's roles, however, is in the emotional (39) of family life. Men are increasingly (40) to meet the emotional needs of their families, (41) their wives. In fact, expectations about the emotional domain of marriage have become more significant for marriage in general. Research on (42) marriage has changed over recent decades points to the increasing importance of the emotional side of the relationships and the importance of sharing in the "emotion work" (43) to nourish marriages and other family relationships. Men and women want to experience marriages that are interdependent, (44) both partners nurture each other, attend and respond to each other, and encourage and promote each other. We are thus seeing marriages in which men's and women's roles are becoming increasingly more (45) .

单选题According to the passage, all the following can affect economy EXCEPT _____________ .

单选题Florida's______ warm climate and plentiful rainfall make the state a center of citrus productions,

单选题She ______ for a while and was unable to make a decision, so she asked for my help. A. flickered B. glittered C. faltered D. blinked

单选题You know yourself better than anyone else. Do not undertake that project unless you can ______ it. A.complement B.compliment C.implement D.supplement

单选题I'm sorry I'm late. I had a mental ______ and forget that we would have a meeting today. A. aberration B. perversion C. imbalance D. sanity

单选题Most parents encourage their children to take an active part in social events, ______ those events do not interfere with their studies.

单选题Telecommuting—substituting the computer for the trip to the job—has been hailed as a solution to all kinds of problems related to office work. For workers it promises freedom from the office, less time wasted in traffic, and help with child-care conflicts. For management, telecommuting helps keep high performers on board, minimizes lateness and absenteeism by eliminating commuters, allows periods of solitude for high-concentration tasks, and provides scheduling flexibility. In some areas, such as Southern California and Seattle, Washington, local governments are encouraging companies to start telecommuting programs in order to reduce rush-hour traffic and improve air quality. But these benefits do not come easily. Making a telecommuting program work requires careful planning and an understanding of the differences between telecommuting realities and popular images. Many workers are seduced by rosy illusions of life as a telecommuter. A computer programmer from New York City moves to the quiet Adirondack Mountains and stays in contact with her office via computer. A manager comes in to his office three days a week and works at home the other two. An accountant stays home to care for her sick child; she hooks up her telephone modem connections and does office work between calls to the doctor. These are powerful images, but they are a limited reflection of reality. Telecommuting workers soon learn that' it is almost' impossible to concentrate on work and care for a young child at the same time. Before a certain age, young children cannot recognize, much less respect, the necessary boundaries between work and family. Additional child support is necessary if the parent is to get any work done. Management, too, must separate the myth from the reality. Although the media has paid a great deal of attention to telecommuting, in most cases it is the employee's situation, not the availability of technology, that precipitates a telecommuting arrangement. That is partly why, despite the widespread press coverage, the number of companies with work-at-home programs of policy guidelines remains small.

单选题The old couple decided to ______ a boy and a gift though they had three children of their own.

单选题NASA is casting a wider net in the space shuttle investigation as to what caused the spacecraft to swing out of control and ______ moments before it was to land.

单选题Since the situation is changing, let"s take some ______ measures to deal with it.

单选题In his ______ to further his knowledge of the universe, man has now begun to explore space.