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人教2003课标版《Warming up、Pre-reading、Reading、Comprehending》PPT课件优质课下载
Vocabulary revision
Sentence revision
Topic revision
During the 20th century the temperature
of the earth _____ about one degree.
The carbon dioxide in the atmosphere
__________ from around 315 parts to
around 370 pearts per million.
rose
went up
a phenomenon----- global warming
human activities
How did it come about ?
a random and natural
phenomenon
or
There is no doubt that it is human activity that has caused this globlal activity rather than a random but natural phenomenon.
There is (some) doubt whether ...
I doubt whether...
review
it is/ was + 被强调部分+ that / who...
it is / was not until... that...
human activities
the burning of _____ _____ like coal, natural gas and oil
more ____________ gases, the most