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

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

What is the space at Quincy Market now used for

A．Boston's new city hall.
B．Sports and recreational facilities.
C．Commercial and industrial warehouses.
D．Restaurant, offices, and stores.