16. Electronic commerce becomes a new type of commerce when______.
［A］ paperbased transactions are moved on to the Web
［B］ the efficiency of the existing process is improved by Internet
［C］ new buyers and sellers find each other on the Internet
［D］ a book site offers the books several bookstores have altogether
17. The use of computer will be as common as the use of cars when_______.
［A］ governments begin to move administration on-line
［B］ electronic commerce causes a fundamental change
［C］ computer and communication become simpler and cheaper
［D］ the boundary between the computer and the TV disappears
18. What is the current problem with the Web according to the passage?
［A］ Too much information. ［B］ Lack of response.
［C］ Ineffective interaction. ［D］ Slowness of speed.
19. The example of potato chips is used to illustrate_____.
［A］ the defect of computers at the present stage of development
［B］ the similarity between a computer chip and a potato chip
［C］ the richness of information available on the web
［D］ the irrelevant responses the web sometimes offers
20. The passage is mainly trying to show that______.
［A］ the web is becoming a way of conveying information
［B］ the web will bring about a new way of life
［C］ electronic commerce develops with the internet
［D］ interaction with the Web will become easier
核心词汇
bring in *① to allow or invite someone to become involved in a discussion, investigation, etc 让……参与 例：They brought the police in when it all became serious. 当事态变得很严重时，他们叫来了警察。 ② to introduce(legislation, a custom, fashion, topic etc)提出(新法案)；引入（时尚、习俗、话题等） ③ to earn or produce a particular amount of profit赢利，赚钱 例：The sale of the house only brought in about $45,000. 卖房子只赚了约4.5万美元。
measure vt. ① to find the size, length or amount of sth. using standard units测量，度量 *② to judge the importance, value, or true nature of sth.估量，判定（重要性、价值或影响等） 例：Education should not be measured purely by examination results. 教育不应该只用考试成绩来衡量。
n. ① 尺寸，大小 ② ［常用复数］ 措施，办法 例：take measures to do sth. 采取措施应对（某种情况）
obscure a. *① not well known and usually not very important 默默无闻的，没有名气的 例： an obscure poet 名不见经传的诗人 ② difficult to understand 难理解的，晦涩的 例：The environment is obviously important, but its role has remained obscure. 环境显然很重要，但它的作用却仍不为人所知。（2002考研翻译 ）
vt. to make sth. difficult to know or understand 搞混，使难理解 例：Recent successes obscure the fact that the company is still in trouble. 近来的一些成功使人看不清公司依然处于困境。
resolution n. ① ［C］ 正式决定, 决议 ② ［U］ （问题、纷争的）解决 例：The lawyers advice led to the resolution of the problem. 律师的忠告使这个问题得以解决。 *③ ［C, U］ （电视、显微镜等的）清晰度；分辨率
超纲词汇
notch n. ①（表面或边缘的）V形刻痕、槽口；圆形切口 ②（记数等用的）刻痕 ③ 等级，档次 例：a notch above others比其他的高一等 vt. ① 开槽口；（用凹口）嵌入 ②