单项选择题

How are tornadoes distinguished from whirlwinds

A．Whirlwinds rotate in a different direction than tornadoes do.
B．Tonadoes travel over land and whirlwinds over water.
C．Tonadoes are larger than whirlwinds.
D．Only tornadoes are funnel-shaped.

<上一题目录下一题>

热门试题

单项选择题

Which of the following is NOT mentioned by the author as a criterion for determining a person's place in a traditional society

A．Family background.
B．Age.
C．Religious belief.
D．Custom.

单项选择题

According to the passage, which of the following behaviors is frequently characteristic of funnel clouds

A．Descending from different cloud bases.
B．Occurring in isolated areas.
C．Lasting a long time.
D．Occurring in groups.