单项选择题

According to the author, the passage mainly deals with_____.

A．a tornado in Edmonton, Alberta
B．what's a"Nowcast"
C．the disadvantage of conventional computer models of the weather forecast
D．a breakthrough in weather forecast

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单项选择题Conventional computer models of the atmosphere fails to predict such a short-lived tornado because_____.

A．the computer is not used to forecast specific local events
B．the computers are not advanced enough to predict it
C．the weather data people collect are often wrong
D．weather conditions in some small regions are not available

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 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

单项选择题According to the passage, the word Nowcast (paragraph 3) means_____.

A．a way of collecting raw weather data
B．a forecast which can predict the weather conditions in the small area in an accurate way
C．a network to collect instant weather data
D．a more advanced system of weather observation

单项选择题According to the author, his friend has bought a television in order to_____.

A．know the current events
B．entertain himself at leisure time
C．escape from the reality
D．kill time