单项选择题

The thirty-day forecast is determined by examining ______.

A．daily weather maps
B．upper air levels
C．satellite reports
D．changing fronts
<上一题 目录 下一题>
热门 试题

单项选择题
All the following characteristics of weather maps are mentioned in this passage EXCEPT ______.
A．barometric pressure
B．fronts
C．thermal changes
D．wind speed
单项选择题
At the present time, experiments are being conducted in ______.
A．manipulating weather
B．determining density of pressure groups
C．30-day "outlooks"
D．controlling storms
相关试题