单选题The policeman tried to ______ the teenage driver to obey the traffic laws rather than fine him directly.(2002年厦门大学考博试题)

单选题Teachers need to be aware of the emotional, intellectual, and physical changes that young adults experience. And they also need to give serious (21) to how they can be best (22) such changes. Growing bodies need movement and (23) , but not just in ways that emphasize competition. (24) they are adjusting to their new bodies and a whole host of new intellectual and emotional challenges, teenagers are especially self-conscious and need the (25) that comes from achieving success and knowing that their accomplishments are (26) by others. However, the typical teenage lifestyle is already filled with so much com petition that it would be (27) to plan activities in which there are more winners than los ers, (28) , publishing newsletters with many student-written book reviews, (29) student artwork, and sponsoring book discussion clubs. A variety of small clubs can pro vide (30) opportunities for leadership, as well as for practice in successful (31) dynam ics. Making friends is extremely important to teenagers, and many shy students need the (32) of some kind of organization with a supportive adult (33) visible in the back ground. In these activities, it is important to remember that the young teens have (34) at tention spans. A variety of activities should be organized (35) participants can remain ac tive as long as they want and then go on to something else without feeling guilty and with out letting the other participants down.

单选题The author's view on the historical development of toys is ______.

单选题It can he inferred from the passage that the author was ______. ( )

单选题There was a traffic jam, but she ______ get to the destination in time. A. could B. might C. ought to D. was able to

单选题Distance education is enrollment and study with an educational institution that provides lesson materials prepared in a sequential and logical order for study by students on their own. When each lesson is completed, the student mails or transmits the assigned work to the institution for correction, grading, comment, and subject matter guidance by qualified instructors. Corrected assignments are returned promptly to the student. This exchange provides a personalized student-teacher relationship. If a student slows his or her pace or fails to send assignments, the school provides encouragement. Although some institutions provide employment placement information and assistance, no reputable school ever guarantees a job to graduates. Distance education and self-study are different. Self-study materials provide no instructional service. Corrected assignments, examinations, and special help provided by a qualified facility are vital to a good learning situation. However, these are not part of self-study. There are many self-study courses and recordings available, and they may have value, but they clearly are not correspondence or distance education courses. Some institutions offer combination courses that provide training-in-residence for students who complete their distance education lessons. In-service or on-the-job training is required or provided with other courses and is a feature of many vocational distance education programs. Quality distance education institutions screen prospective students to assure that only those who can benefit from the courses are enrolled. While there are educational prerequisites for some academic subjects, interest and aptitude are the primary factors leading to success in most distance education courses. Because they provide alternative educational opportunities, distance education institutions try not to deny a prospective student the opportunity to succeed in a course—interest and experience are good indicators of future success. Distance education courses vary greatly in scope, level, and length. Some have few lessons and require only weeks to complete, while others have a hundred or more assignments requiring three or four years of conscientious study. Also, a wide variety of subjects is offered. Subjects include yacht design, accounting, medical transcription, nutrition, robotics, travel agent training, gun-repair, gem identification, computer programming, catering and cooking, and earning an entire high school diploma, just to name a few. There is an increasing recognition of "distance education" and many colleges offer credit for their distance learning courses or accept some distance education credits of resident students working toward a degree. In fact, many distance education institutions award their own academic degrees. Acceptance of students and awarding of academic credit is the prerogative of the receiving academic institution. Also, the employing organization may set its own credit acceptance policies.

单选题There ______ some mistakes in your composition. A. have B. has C. seems to be D. seem to be

单选题Nuclear fission is the splitting of the nucleus of an atom. Only a few elements are suitable for use in this way, the most important ones being Uranium-235, Uranium-233, and Plutonium-239. When a nucleus of one of these elements is struck by a free neutron it breaks down into two lighter nuclei which fly apart at high speed, colliding with surrounding atoms. Their kinetic energy is converted into heat energy. At the same time, two or three free neutrons are released and one of them enters the nucleus of a neighbouring atom, causing fission to occur again; and so on. The reaction spreads very quickly, with more and more heat energy released. This is called a "chain" reaction because the splitting of each nucleus is linked to another, and another and another. If this reaction takes place in an atomic bomb, where nothing is done to slow it down, the result is a violent explosion that can destroy a town in a few seconds. Fission can also, however, take place within a construction called a nuclear reactor, or atomic pile. Here the highly fissile material (U-235, U-233, Pu-239) is surrounded by a substance that is non-fissile, for instance graphite. This material is called a moderator. The neutrons lose some of their energy and speed through colliding with the atoms of the moderator. Energy—heat energy—is still created on an enormous scale, but no expansion takes place. The moderator has another function: by slowing down the speed of the free neutrons, it makes it more likely that one of them will collide with the nucleus of a neighbouring atom to continue the chain reaction. The chief advantage of nuclear energy is that it does not depend on any local factors. A nuclear reactor, unlike an oil-well or a coalmine, does not have to be sited on top of a fossil-fuel source; unlike the solar energy unit, it does not have to go out of production when the sun is not shining; unlike hydro-electric power, it does not depend on a large flow of water which may be reduced during some seasons of the year. With an atomic power station, the only limiting factor is that of safety. In the opposite process, nuclear fusion, two nuclei come together, to form a new nucleus of a different kind and this process also releases energy on an enormous scale. Fusion can only occur under conditions of very great heat—at least 50000000 degrees Celsius. (The temperature at the centre of the sun is estimated as 130000000 degrees Celsius.) A fusion reaction on earth has already been created—the hydrogen bomb. This is an uncontrolled reaction. It is not yet possible to produce a controlled fusion reaction that can be used for the production of useful energy. Nuclear energy can be thought of as a kind of square, Three of the quarters of the square are known and used, but the fourth cannot yet be used.

单选题Michasson may NOT support the idea to

单选题When you are driving on a motorway, you must obey the signs telling you to get into the right______.

单选题The flies buzzing and whizzing around their ears kept them from finishing the experiment at the swamp.

单选题Although this could be seen as a strength because it allows flexibility, it can also be argued that it invalidates the theory; in this case several people's rights must be relinquished to reach a conclusion.

单选题What can be concluded from the last paragraph?

单选题Children model themselves largely on their parents. They do so mainly through identification. Children identify 1 a parent when they believe they have the qualities and feelings that are 2 of that parent. The things parents do and say—and the 3 they do and say to them—therefore strongly influence a child"s 4 However, parents must consistently behave like the type of 5 they want their child to become. A parent"s actions 6 affect the self-image that a child forms 7 identification. Children who see mainly positive qualities in their 8 will likely learn to see themselves in a positive way. Children who observe chiefly 9 qualities in their parents will have difficulty 10 positive qualities in themselves. Children may 11 their self-image, however, as they become increasingly 12 by peers groups standards before they reach. Isolated events, 13 dramatic ones, do not necessarily have a permanent 14 on a child"s behavior. Children interpret such events according to their established attitudes and previous training. Children who know they are loved can, 15 , accept the divorce of their parents or a parent"s early 16 But if children feel unloved, they may interpret such events 17 a sign of rejection or punishment. In the same way, all children are not influenced 18 by toys and games, reading matter, and television programs. 19 in the case of a dramatic change in family relations, the 20 of an activity or experience depends on how the child interprets it.

单选题Strange things happen to time when you travel, because the earth is divided into twenty-four time zones, one hour apart. You can have days with more or fewer than twenty-four hours, and weeks with more or fewer than seven days. If you make a five-day trip across the Atlantic Ocean, your ship enters a different time zone every day. As you enter each zone, the time changes one hour. Traveling west, you set clock back; traveling east, you set it ahead. Each day of your trip has either twenty-five or twenty-three hours. If you travel by ship across the Pacific, you cross the International Date Line. By agreement, this is the point where a new day begins. When you cross the line, you change your calendar one full day, backward or forward. Traveling east, today becomes yesterday; traveling west, it is tomorrow.