单选题There are some ______ between their two descriptions; we are puzzled which we should believe.(2005年春季电子科技大学考博试题)

单选题Modern printing equipment quickly turns out duplicate copies of textual and pictorial matter.

单选题If humans use up too much soil—which they have often done and are doing—then they will starve down to the carrying capacity of their habitat. This is nature's "indifferent" ______. A. flexibility B. justice C. plasticity D. sensibility

单选题Who are most likely to lie for serving purposes?

单选题Although women cluster to him like moths around a flame, he is none ______ happier for it.

单选题Did you notice how that girl______ all the younger children about?

单选题The company, EDS, is smart enough to______90,000-person workforce into independent microteams that work directly with individual clients on creative business solutions.

单选题In many countries now, smoking is not ______ in public places. A. permissive B. permissible C. permutable D. pernicious

单选题He had more dictionaries than ______ for his work.

单选题I didn't stop at John's house because he had visitors, and I didn't want to butt in. A. intrude B. incur C. infer D. intercept

单选题It was obvious that she and her husband were ______ and she wished she'd never married him.

单选题Some authorities trace the jury system to Anglo Saxon or even more ______ Germanic times.

单选题You are afraid to attack him directly. You, therefore, are resorting to ______.

单选题Sleep is (controlled) by (the brain) and (associated by) characteristic (breathing) rhythms.

单选题In ______ , it is now clear that this battle was turning point in the war.

单选题There are four basic types of competition in business that form a continuum from pure competition through monopolistic competition and oligopoly (商品应垄断) to monopoly. At one end of the continuum, pure competition results when every company has a similar product. Companies that deal in commodities such as wheat or corn are often involved in pure competition. In pure competition, it is often the ease and efficiency of distribution that influences purchase. In contrast, in monopolistic competition several companies may compete for the sale of items that may be substituted. The classic example of monopolistic competition is coffee and tea. If the price of one is perceived as too high, consumers may begin to purchase the other. Coupons and other discounts are often used as part of a marketing strategy to influence sales. Oligopoly occurs when a few companies dominate the sales of a product or service. For example, only five airline carriers control more than 70 percent of all ticket sales in the United States. In oligopoly, serious competition is not considered desirable because it would result in reduced revenue for every company in the group. Although price wars do occur, in which all companies offer substantial savings to customers, a somewhat similar tendency to raise prices simultaneously is also usual. Finally, monopoly occurs when only one firm sells the product. Some monopolies have been tolerated for producers of goods and services that have been considered basic or essential, including electricity and water. In these cases, it is government control, rather than competition, that protects and influences sales.