The impact of e-commerce is happening in phases, in its first phase(1994—1997)， e-commerce was about presence: making sure that everybody had a Web site, meeting the demand that every company, large or small, get out there and have at least something on the Internet, people weren't quite sure why they were doing it, but they knew that they had to have an online presence. The second phase(1997—2000)of e-commerce was about transactions buying and selling over digital media. The focus in tees phase was on order flow and gross revenue. Some of that was the matching of buyers and sellers who never would have found each other in the past. Some of it was simply taking transactions that would have been done through paper purchase orders and saying that tees business was done on the Internet, although the meaning of that change was quite insignificant. But in this phase, the announcements were all about order flow at any cost: why-sell-it-when-you-can-give-it-away business models. As result, manta of the first movers in this phase such as Value America, are gasping, have gasped their last breath. Today commerce is entering the third phase(2000—?), with a focus on how the Internet can impact profitability. And profitability is not about increasing gross revenues but rather increasing gross margins. We call this phase e-business, and it includes all the applications and processes enabling a company to service a business transaction. In addition to encompassing, e-commerce business includes both front- and back-office applications that form the core of en-gene for modern business. Thus, e-business is not just about e-commerce transactions or about buying and selling over the web; it's the overall strategy of redefining old business models, with the aid of technology, to maximize customer value and profits. To paraphrase business Week Forger B2B and B2C, e-business is about P2P-path to profanity.

38． The writer's attitude toward e-commerce is______.

80． 机器人将要在哪些领域替代人的工作呢?(take over)

78． 她认为她的成功是由于勤奋加上一点儿运气得来的。(attribute to)

79． 据说那个病人曾要求医生助他一死。(be said)

75． 【T5】

76． 他建议我找一份业余工作来挣点钱供我上大学用。(advise)

77． 尽管玛丽看起来有20多岁，可是她坚持说她只有16岁。(insist)

74． 【T4】

73． 【T3】

The differences in relative growth of various areas of scientific research have several causes.【T1】Some of these causes are completely reasonable results of social needs. Others are reasonable consequences of particular advances in science being to some extent self-accelerating.Some, however, are less reasonable processes of different growth in which preconception of the form scientific theory ought to take, by persons in authority, act to alter the growth pattern of different areas. This is a new problem probably not yet unavoidable; but it is a frightening trend.【T2】This trend began during the Second World War, when several governments came to the conclusion that the specific demands that a government wants to make of its scientific establishment cannot generally be foreseen in detail.It can be predicted, however, that from time to time questions will arise which will require specific scientific answers. It is therefore generally valuable to treat the scientific establishment as a resource or machine to be kept in functional order.【T3】This seems mostly effectively done by supporting a certain amount of research not related to immediate goals but of possible consequence in the future.This kind of support, like all government support, requires decisions about the appropriate recipients of funds. Decisions based on utility as opposed to lack of utility are straightforward. But a decision among projects none of which has immediate utility is more difficult. The goal of the supporting agencies is the praisable one of supporting "good " as opposed to "bad" science, but a valid determination is difficult to make. Generally, the idea of good science tends to become confused with the capacity of the field in question to generate an elegant theory.【T4】However, the world is so made that elegant systems are in principle unable to deal with some of the world's more fascinating and delightful aspects.【T5】New forms of thought as well as new subjects for thought must arise in the future as they have in the past, giving rise to new standards of elegance.

71． 【T1】

72． 【T2】