Conventional (普通) computer models of the atmosphere have limited value in pre-dicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.

A．there were no conventional computers
B．the cost of the equipping and operating was sky-high
C．there were no difficulties in data processing
D．there were not enough meteorologists

A．are better at telling less serious lies than men
B．generally lie far more than men do
C．lie at parties more often than men do
D．often make promises they intend to break