[单选题]经营者对未销售过的商品开展促销活动,可以使用( )标示。
A. 原价
B. 原售价
C. 零售价
D. 成交价

A recent phenomenon in present-day science and technology is the increasing trend towards "directed" or "programmed" research, i.e. research whose scope and objectives are predetermined by private or government organizations rather than researchers themselves. Any scientist working for such organizations and investigation in a given field therefore tends to do so in accordance with a plan or programm designed beforehand.
At the beginning of the century, however, the situation was quite different. At that time there were no industrial research organizations in tile modern sense: the laboratory unit consisted of a few scientists at the most, assisted by one or two technicians, often working with inadequate equipment in unsuitable rooms. Nevertheless, the scientist was free to choose any subject for investigation he liked, since there was no predetermined programm to which he had to conform.
As the century developed, the increasing magnitude and c
A. because no government would prefer.
B. because there were no industrial research organization.
C. and scientist were allowed complete freedom to do the research they want to.
D. in which insufficient equipment and instruments were available.

A large part of effective leadership is dependent on something called "style". But style is difficult to teach, and what makes one leader great and another mediocre is not easily defined. Leadership always implies power, and a broad definition in this context is that leadership includes the power to influence thoughts and actions of others in such a way that they achieve higher satisfaction and/or performance. Over the past century, there have been three major approaches to understanding leadership.
Identifying leadership traits, or the physical and psychological characteristics of leaders, was the first formal approach, and had a lot of intuitive appeal. It owed its origins to the mm of the century (about 1904) when trait studies began. At this time most American leaders came from certain wealthy families, the vast majority were white males, and there were some social norms about what leaders looked like (tall, square jaw, well groomed, etc.). The
A. That leaders are born, not made.
B. That leadership could be learned.
C. That leadership could be classified into two functions.
D. That every effective group needs someone to fill each of the two roles.