单项选择题

According to the passage, ________ is the key factor to making " Nowcasts" a reality.

A．scientific and technological advances such as radar, or satellites
B．computer scientist
C．meteorologists
D．advanced computer programs
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单项选择题
The word exceeded in paragraph I most probably means ______.
A．added up to
B．were more than
C．were about
D．were less than
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