题目内容

ADSL是一种宽带接入技术,只需路两端加装ADSL设备(专用的Modem),即可实现家庭PC机用户的高速联网。下面关于ADSL的叙述中不正确的是()

A. 它利用普通铜质电话线作为传输介质,成本较低
B. 可在同一条电话线上接听、拨打电话并且同时进行数据传输,两者互不影响
C. 使用的是专线,用户可能始终处于连线(online)状态。
D. 它的带宽很高,无论是数据的下载还是上传,传输速度至少在1Mbps以上

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Part A
Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)
What is time? Is it a thing to be saved or spent or wasted, like money? Or is it something we have no control over, like the weather? Is time the same all over the world? That's an easy question, you say. Wherever you go, a minute is 60 seconds, an hour is 60 minutes, a day is 24 hours, and so forth. Well, maybe. But in America, time is more than that. Americans see time as a very valuable resource. Maybe that's why they are fond of the expression, "Time is money."
Because Americans believe time is a limited resource, they try to conserve and manage it. People in the U.S. often attend seminars or read books on time management. It seems they all want to organize their time better. Professionals carry around pocket planners-some in electronic form-to keep track of appointments and deadlines. People do all they can to squeeze more life out of their time. The early American hero Benjamin Franklin expressed this view best: "Do you love life.'? Then do not waste time, for that is the stuff life is made of."
To Americans, punctuality is a way of showing respect for other people's time. Being more than 10 minutes late to an appointment usually calls for an apology, and maybe an explanation. People who are running late often call ahead to let others know of the delay. Of course, the less formal the situation, the less important it is to be exactly on time. At informal get-togethers, for example, people often arrive as much as 30 minutes past the appointed time. But they usually don't try that at work.
To outsiders, Americans seem tied to the clock, People in other cultures value relationships more than schedules. In these societies, people don't try to control time, but to experience it. Many Eastern cultures, for example, view time as a cycle. The rhythm of nature-from the passing of the seasons to the monthly cycle of the moonshapes their view of events. People learn to respond to their environment. As a result, they find it easier to "go with the flow" than Americans, who like plans to be fixed and unchangeable.
Even Americans would admit that no one can master time. Time-like moneyslips all too easily through our fingers. And time-like the weather-is very haut to predict. Nevertheless, time is one of life's most precious gifts. And unwrapping it is half the fun.
Why Americans are fond of the expression "Time is money"?

A. Because it may be saved or spent or wasted.
Because it is something we have no control over.
C. Because it is equal to everyone.
D. Because it is regarded as an invaluable resource.

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