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了解今日课堂：
Qlobal warming
dialogue 1
Jingjing: Mark, we talked about COP15 a few weeks ago. Have you been ______ they're _____?
Mark: Not really. I expect ______ in May, and might want to watch ______ if I have the chance to ______.
Jingjing: Same here. So many things have ______ that I've not even had the chance to ______ their documents.
Mark: You'll have a chance to ______, Jingjing.
Jingjing: Oh, but I did find ______ on their website.
Mark: What's that?
Jingjing: It's a ______, with a global map and ______.
Mark: I'll look for that. Mostly I need ______; but it's interesting to see what ______ in other parts of the world.
Jingjing: Yeah, and ______ after it's produced. That's why the site shows wind directions—so you can ______ later.
Mark: So, do you think we'll ever ______?
Jingjing: I'm ______.
Mark: Me too. It just seems like we need to see ______ before ______.
Jingjing: How do you mean?
Mark: Well, take ______ for example. We started to see a hole in ______, then scientists predicted a ______, and the ban took effect quickly.
Jingjing: That was ______, wasn't it?
Mark: Yes; and the ozone layer is still ______.
Jingjing: I read something about that earlier this year. The ban has ______ degrees of ______.
Mark: That sounds ______. Still, ______ that when there's ______, people work together to ______.
Jingjing: ______ come from just about everything, though, and are____.
Mark: I know, I know. Let me ______; and we'll talk about it some more.
Jingjing: OK. See you ______.
dialogue 2
Jingjing: Mark, do you believe the theory that ______ could ______?
Mark: Wasn't that ______ of a movie several years back?
Jingjing: Yeah, ______.
Mark: I suppose it ______. I went to ______, and he gave a much more ______.
Jingjing: What was that?
Mark: ______: Once temperatures go above a certain level, plants ______. Without enough plants and trees ______, carbon dioxide levels could rise very quickly.
Jingjing: Jeez, that would be terrible. Most trees are ______ where it only ______ a few days each summer.
Mark: Sure. But there's a ______ of Earth's ______ if it got only a little hotter.
Jingjing: I guess that's why experts and now politicians are ___________.
Mark: Right. That just leaves ______ of how to calculate and how to_______.
Jingjing: Whew! Luckily we're not ______. Hopefully we can_____those people to ______. Can you think of anything we can do, in our everyday life?
Mark: Of course! ______!
Jingjing: Yeah, ______ or use public transportation; ______, reuse and recycle; ______ when you're not using them.
Mark: Exactly. Say, I heard ______.
Jingjing: I could ______. What was it?
Mark: Well, a group of climatologists ______ and figured out how much smaller their ______ was during ______.
Jingjing: Oh, yeah? What ______?
Mark: Each of them, without ______ to speak about global warming, ______ their carbon emissions by ______ a tribal village produces.
Jingjing: Yeesh! That says something ______ online meetings.
new words and phrases
keeping abreast of :
CFCs:
the ozone layer:
scorched Earth:
on the mend:
climatologist:
scenario:
photosynthesizing:
carbon caps:
carbon footprint:
