介绍:
正确原文：
W: Hello?
M: Hi, Amy. This is Bill Johns.
W: Oh. Hi, Bill. You weren't in engineering class today, were you?
M: I have the flu. I was wondering if you could tell me what went on.
W: Actually we had an interesting class. Doctor Colin talked about a new type of fuel.
M: Oh, yeah?
W: Uh hum. It's called dimethyl ether or DME.
M: Oh. I remember reading something about DME. It's mostly used in spray cans, right?
W: Right. DME doesn't destroy the ozone so it's been environmentally friendly.
M: But doesn't DME pollute the air if it's burned in an engine?
W: No. Doctor Colin says something about its exhausts being clear that it doesn't release as many pollutants as diesel fuel. And he mentioned something about DME being more efficient than other alternative fuels.
M: So when will it replace diesel fuel?
W: Not for a while. It's not economical to mass produce.
M: Well, thanks for the information. I guess I won't need to borrow your notes.
W: Well, maybe you should look at them. We are having a test next week.
M: Okay, could you give them to Mike Andrews? I think he is in your psychology class. He is my roommate.
W: Sure. I hope you're feeling better soon.
M: Thanks. Me too. Bye!
W: Bye!
生词摘录：
1.engineering: n. 工程（学）
2.flu: n. 流行性感冒
3.dimethyl ether (DME): 二甲醚
4.ozone: n. 臭氧
5.exhaust: n. 排气，排气装置
6.pollutant: n. 污染物
7.diesel fuel: 柴油机燃料，柴油
8.alternative: adj. 选择性的，二中择一的
9.mass produce: 大规模生产
10.四个人名：Amy 艾米；Bill Johns 比尔·约翰斯；Colin 科林；Mike Andrews 迈克·安德鲁斯
