公共英语考试

【单选题】 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.

网考网参考答案：D
网考网解析：
[解析] 由文中Tornadoes often occur in groups可知应选D。而其它三个选项文中没有提到。 查看试题解析出处>>