题目内容

听力原文:W: Hello, Michael. Would you come to my office for a minute? I want to discuss something with you.
M: Sure. I'll be there in a minute. What is the matter?
W: (22)Many of our elderly customers have never tried to use our computerized banking services. Could you tell me why?
M: (23)Hmm. it could be that they might find it strange to use those computers or machines and they didn't like to ask for help. (24)Maybe we should offer some programs to show them how easy and convenient it is to use such devices as ATM.
W: It's a good idea. It will help those senior citizens to know better about the bank computers, to understand how it will save them from waiting in line during regular banking hours.
M: We could also arrange some of our staff to help those who might do their business with a computer while waiting in line. The customers would be happy to find that they could enjoy a more efficient service.
W: (25)We could do that. How about a pamphlet or something to distribute on a Seniors' Day? A beautiful booklet will enable them to learn how to handle the machines quickly.
M: Sounds good. Actually the elderly need more assistance and instruction in such modern matters.
W: (25)Let's go forward with it right now.I want our customers to know just how convenient the computers are and how much we care about their concerns.
M: Ok. I'll make some arrangements for that soon.
(23)

A. She wants Michael to check about the ATM service.
B. She wants to know why the elderly avoid using computerized banking services.
C. She wants Michael to have a try with their automatic banking services.
D. She wants more information about modern machines in banks.

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A.She thinks they are impractical.B.She thinks they are useful but too expensive.C.She

A. She thinks they are impractical.
B. She thinks they are useful but too expensive.
C. She thinks they are feasible.
D. She thinks they are not instructive enough.

听力原文:M: I have to go to Professor Hudson's place to discuss my thesis. But if time allowed, I'd go to the movies with you when I come back the dorm.
W: It's too bad. I am going to the cinema right now with Jane, and I don't think you could make it.
Q: What is the man going to do?
(19)

A. He is going to Professor Hudson's home.
B. He is going to the movies with the woman.
C. He is going to the cinema with Jane.
D. He is going to the dorm to write his thesis.

What can we learn about the device designed by David Whitten and Kirk Schanze?

A. The two layers of polymers are charged differently.
B. The empty capsule they designed is used to trap mouse.
C. The absorbed-light can kill bacteria inside the capsule directly.
D. Singlet oxygen is an insulated form. of element.

Natural-gas Vehicles
Kermit the Frog once said, "It's not that easy be in green." Although he wasn't referring to cars, his observation seems particularly appropriate for the auto industry today: Designing, developing and marketing "green" cars has not been an easy task, which is why gasoline-powered vehicles still rule the road and fossil fuels still account for almost 75 percent of the world's energy consumption. As gasoline prices soar and concern over harmful emission mounts, however, cars that run on alternate fuel sources will become increasingly important. A natural-gas vehicle, or NGV, is the perfect example of such a car -- it's fuel-efficient, environmentally friendly and offers a relatively low cost of ownership.
Natural Gas Basics
The word "gas" is a confusing term because it is used to describe many different substances that are similar but not exactly the same. For example, the "gas" you put in your car is gasoline, one component of crude oil, or petroleum. Petroleum is a dark, sticky liquid mixture of compounds formed underground by the decay of ancient marine animals.
Natural gas also comes from the decay of ancient organisms, but it naturally takes a gaseous form. instead of a liquid form. Natural gas commonly occurs in association with crude oil. It is derived from both land plants and aquatic (水生的) organic matter and forms above or below oil deposits. It is often dissolved in crude oil at the high pressures existing in a reservoir. There are also reservoirs of natural gas, known as non-associated gas, that contain only gas and no oil.
Natural gas consists primarily of methane (沼气) and other hydrocarbon gases. Hydrocarbons are organic compounds composed only of the elements carbon and hydrogen. The hydrocarbons in natural gas are called saturated hydrocarbons because they contain hydrogen and carbon bound together by single bonds.
Like gasoline, natural gas is combustible (易燃的), which means it can be used in a combustion engine like gasoline. But cars that could burn natural gas didn't appear on the scene until the 1930s.
From Field to Ford
We extract natural gas trapped in underground reservoirs by drilling wells into the earth. A modern well. equipped with diamond-studded drill bits, can drill to depths approaching 25.000 feet.
Throughout the 19th century, the use of natural gas remained localized because there was no way to transport large quantities of gas over long distances, in 1890, the invention of a leakproof pipeline coupling made it possible to transport gas miles from the source. Improvements in pipeline technology continued over the next two decades until long-distance gas transmission became practical. From 1927 to 1931, ,laborers constructed more than t0 major natural gas transmission systems in the United States, making natural gas a viable energy source for many applications. The oil shortages of the late 1960s and early 1970s brought renewed interest in natural gas as a fuel source, especially for automobiles.
Today, owners of natural-gas vehicles can fill up their cars at one of 1,300 fueling stations located in the United States. Honda also offers a personal natural gas pump to people who purchase its natural-gas-powered Civic. The pump uses a home's existing natural gas lines and can be installed for $ 500 to $1500.
Natural-gas Vehicle Design
Natural-gas vehicles use the same basic principles as gasoline-powered vehicles. In other words, the fuel (natural gas in this case) is mixed with air in the cylinder of a four-stroke engine and then ignited by a spark plug to move a piston (活塞) up and down. Although there are some differences between natural gas and gasoline in terms of flamability and ignition temperatures, NGVs themselves operate on the same fundamental concepts as gasoline-powered vehicles.
Still, some

A. Y
B. N
C. NG

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