题目内容
A．Their operation speed increases.B．Their operation speed also decreases.C．Their micro
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听力原文：M: So, what do you want to do tomorrow？
W: Well, let's look at this city guide here. Uh, here's something interesting. Oh! Why don't we first visit the art museum in the morning.
M: Okay. I like that idea. And where do you want to eat lunch？
W: How about going to an Indian restaurant？ Humm. The guide recommends one downtown a few blocks from the museum.
M: Now that sounds great. After that, what do you think about visiting the zoo？ Umm, well, it says here that there are some very unique animals not found anywhere else.
W: Well, to tell the truth, I'm not really interested in going there. Why don't we go shopping instead？ There are supposed to be some really nice places to pick up souvenirs.
M: Nail, I don't think that's a good idea. We only have few traveler's checks left, and I only have fifty dollars left in cash.
W: No problem. We can use your credit card to pay for MY new clothes.
M: Oh, no. I remember the last time you used my credit card for your purchases.
W: oh well. Let's take the Subway down to the seashore and walk along the beach,
M: Now that sounds like a wonderful plan.
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A．The student's parents have had an accident.B．The student is in a serious condition.C
A．The man wants to meet the woman's parents.B．The man doesn't know the woman's plan.C．
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： The use of silicon is basic to the developments which have taken place since the 1950s. This element has special electrical properties. It is a semiconductor, half way between a full conductor such as copper and an insulator like plastic. By adding small amounts of other chemicals to pieces of silicon and then joining the resulting different types together in various ways, a very fast, efficient "switch" can be produced.
As manufacturing processes grew more and more sophisticated, it became possible to pack more and more individual transistors onto a single piece of silicon called chip. These chips are at most 1 centimeter square and a fraction of a millimeter thick. In 1960 a chip could hold one transistor. Today it can contain as many as a million.
Silicon chips are changing our world at an enormous pace. They affect or will affect all aspects of our lives—industry, transportation, finance, education, medicine, communication, domestic and recreational spheres. By using micro-technology, computers can now be made with an almost infinite operational capacity. The cost is actually decreasing while their speed of operation is increasing. Their micro-components will last indefinitely under normal conditions.
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