单项选择题


A．preserve
B．specialize
C．approach
D．adapt
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单项选择题
The word exceeded in paragraph 1 most probably means ______.
A．added up to
B．were more than
C．were about
D．were less than
单项选择题
According to the author, the passage mainly deals with ______.
A．a tornado in Edmonton, Alberta
B．what's a "Now casts"
C．the disadvantage of conventional computer models of the weather fore- cast
D．a breakthrough in weather forecast
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