单选题A ______ contest is intended to eliminate less qualified competitors before decisive contests.

单选题I don't know ______ talking about.

单选题— May I go and play football with Dick this afternoon, Dad? — No, you can't go out ______ your work is being done.A. beforeB. untilC. asD. after

单选题As they grow older, most people wonder how increasing age will affect intelligence. Can people in middle age and beyond expect to think as effectively and to solve problems as efficiently as they have in the past? One of the difficulties in comparing the intellectual functioning of people at different ages is the problem of cohort((具有相同特征的)一群人) effects. Different age groups in the population have experienced different historical events (wars, exposure to television, and so on) as well as changes in the general standard of living. Different scores that people of varying ages achieve on intelligence tests could be partly due to changes in diet, housing, or health care or, even more likely, to the amount and quality of education. Since the beginning of this century, there has been a trend for more people to go to school and to remain in school longer. Because it eliminates these cohort effects, a longevous (长寿的) study may be the best way to look at age-related changes in intellectual functioning. One of the few longevous studies of intellectual functioning is the Seattle Longevous Study, conducted by K. Warner Schaie and his associates. The original subjects, who ranged in age from 18 to 67, have now been tested 4 times over a 21 year period. These results have given a reasonably good picture of longitudinal(纵向的) change in cognitive abilities. The data show that there are only trivial changes in the kinds of abilities measured by intelligence tests before the age of 60, and no reliable decrease can be shown in these abilities before age 74. Although there is some decrease in measured ability in the late 60s and the 70s, it is not until age 81 that the average person falls below the middle range of performance for young adults. The data from the Seattle Longevous Study also suggest that there are very great individual differences in intellectual change throughout adulthood. Between the ages of 74 and 81, less than half the subjects showed any significant change. One important factor is health, especially the presence or absence of coronary(冠状) heart disease. Another is a high socioeconomic status, which is related not only to higher initial levels of functioning but to the maintenance of a higher level throughout life. A flexible life style in middle age, probably associated with a flexible personality style, also tends to predict high performance in old age. While some of these variables may have substantial hereditary (遗传的) elements, changes in environment and education could also be important in maintaining a higher level of functioning for many individuals.

单选题Respect for the law is the foundation of civilized living, ______breaks it will be punished.

单选题Can the Internet help patients jump the line at the doctor's office? The Silicon Valley Employers Forum, a sophisticated group of technology companies, is launching a pilot program to test online "virtual visits" between doctors at three big local medical groups and about 8, 000 employees and their families. The six employers taking part in the Silicon Valley initiative, including heavy hitters such as Oracle and Cisco Systems, hope that online visits will mean employees won't have to skip work to tend to minor ailment or to follow up on chronic conditions. "With our long commutes and traffic, driving 40 miles to your doctor in your hometown can be a big chunk of time, " says Cindy Conway, benefits director at Cadence Design Systems, one of the participating companies. Doctors aren't clamoring to chat with patients online for free; they spend enough unpaid time on the phone. Only 1 in 5 has ever E-mailed a patient, and just 9 percent are interested in doing so, according to the research firm Cyber Dialogue. "We are not stupid, " says Stirling Somers, executive director of the Silicon Valley Employers group. "Doctors getting paid is a critical piece in getting this to work. " In the pilot program, physicians will get $ 20 per online consultation, about what they get for a simple office visit. Doctors also fear they'll be swamped by rambling E-mails that tell everything but what's needed to make a diagnosis. So the new program will use technology supplied by Healinx, an Alameda, Calif. -based start-up. Healinx's "Smart Symptom Wizard" questions patients and turns answers into a succinct message. The company has online dialogues for 60 common conditions. The doctor can then diagnose the problem and outline a treatment plan, which could include E-mailing a prescription or a face to face visit. Can E-mail replace the doctor's office? Many conditions, such as persistent cough, require a stethoscope to discover what's wrong—and to avoid a malpractice suit. Even Larry Bonham, head of one of the doctor's groups in the pilot, believes the virtual doctor's visits offer a "very narrow" sliver of service between phone calls to an advice nurse and a visit to the clinic. The pilot program, set to end in nine months, also hopes to determine whether online visits will boost worker productivity enough to offset the cost of the service. So far, the Internet's record in the health field has been underwhelming. The experiment is "a huge roll of the dice for Healinx, " notes Michael Barrett, and analyst at Internet consulting from Forester Research. If the "Web visits" succeed, expect some HMOs (Health Maintenance Organizations) to pay for online visits. If doctors, employers, and patients aren't satisfied, figure on one more E-health start-up to stand down.

单选题The author seems to agree that

单选题You ______ her in her office last Friday；shes been out of town for two weeks． A) neednt have seen B) must have seen C) might have seen D) cant have seen

单选题As an interdisciplinary study of language use, ______ attempts to show the relationship between language and society.

单选题Many teachers believe that the responsibility for learning lies with the student. If a long reading assignment is given, teachers expect students to be familiar with the information in the reading even if they do not discuss it in class or give an examination. The ideal student is considered to be one who is motivated to learn for the sake of learning, not the one only interested in getting high grades. When research is assigned, the professor expects the student to take the initiative and to complete the assignments with minimal guidance. Professors will help students who need it, but prefer that their students not be overly dependent on them. In the United States, professors have other duties besides teaching. Often they are responsible for administrative work within their departments. In addition, they may be obliged to publish articles and books. Therefore, the time that a professor can spend with a student outside of class is limited. If a student have problems with classroom work, the student should either approach a professor during office hours or make an appointment. Participation in the classroom is not only accepted but also expected of the students in many courses. Some professors base part of the final grade on the student's oral participation. Although there are formal lectures during which the student has a passive role ( i. e. listening and taking notes) many courses are organized around classroom discussions, students questions, and informal lectures. In the teaching of science and mathematics , the dominant mode of instruction is generally traditional, with teachers presenting formal lectures and students taking notes. However, new educational , sociology, and psychology classes, for example, are often required to solve problems in groups, design projects, make presentations and examine case studies. Since some college or university courses are"applied" rather than theoretical, they stress "doing"and involvement.

单选题She always felt inferior ______ her older sister. A. with B. from C. to D. on

单选题--Li Lin is very bright and studies hard as well. --It's no ______ he always gets the first place in any examination. A. question B. doubt C. problem D. wonder

单选题In the last paragraph, people are recommended to have ______.

单选题In today's competitive job market, students are looking for degrees outside their home countries to position themselves as global managers fluent in international practices. Among them is Simon Tindall, an American who turned down a scholarship to Georgetown University in Washington in favor of Cambridge. Foreign students make up an average 70 percent to 80 percent of non-U.S. MBA programs. In contrast, the Wharton School, at the University of Pennsylvania, reports one of the highest percentages of international students for an American program at 39 percent, a figure that includes U.S. permanent residents. While the tough recruiting climate for graduates entering the U.S. job market is a factor in the decrease, another pressure point seems to be restrictions on visas for travel, education and work in the States after the war in Iraq, SARS in Asia and political changes related to the terrorist attacks of Sept. 11,2001. One Chinese student said she had been offered a full scholarship to attend the University cf Michigan's MBA program in 2002 but that a visa request had been denied two years in a row. Another could not obtain a visa to enroll at the University7 of California at Los Angeles. Many students are also being attracted bv the affordability of international programs, especially in relation to costs in the United States. Most MBA programs outside the United States can be completed in one year rather than two, representing a huge saving in both tuition and opportunity costs. Britain has an advantage over other international programs in both ranking and brand value. Better rankings attract better students, who in turn improve the rankings. "The applications we received this year were on average of a much higher quality than last year," said Gary, the admission director at Cambridge.”The increase in applications enables us to be more selective. Year to year, we're looking to increase the quality of the student body, which in turn strengthens competition for the whole program. "