听写材料12.环境课程

正确原文：

W:Hi, Jim. What are you doing?
M: Oh. Hi. Linda. I'm working on a report on energy resources for myenvironmental science class. But I'm having trouble finding enough information.
W: You know we were talking about sources of fuel in my class today.
M: Yeah?
W: Prof Collins. He is all authority on energy sources. He was telling us abouta new way of getting fuel oil from coal.
M: I didn't know that was possible.
W: He said something about coal being set on fire and blasted with a mixture ofsteam and oxygen. This process produces a gas made up of hydrogen and carbon,the, um, the basic elements of oil.
M: And then they do something to change that gas to oil?
W: Right. First. Since coal contains fewer hydrogen atoms than oil, they haveto add some extra hydrogen to the gas. Then impurities are washed out withmethanol. I think before this gas is sent on to reactors where it's changedinto oil.
M: Since coal is so plentiful, I guess it won't be long till this new type ofoil will be available all over the place, huh?
W: I doubt it. Prof Collins said something about the process not beingeconomically enough to use in this country. At any rate you really ought totalk to him. He'll be able to help you more than I can and he's got officehours all afternoon today.
M: Thanks! He's over in Anderson Hall, right?
W: Right.

生词摘录：

1.    environmental science:环境科学

2.    authority: n. 权威

3.    blast: v. 爆炸

4.    hydrogen: n. 氢

5.    impurity: n. 杂质，混杂物

6.    methanol: n. 甲醇

7.    plentiful: adj. 许多的，大量的，丰富的