单项选择题
The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the（）.
A.Wall cloud B.Nimbostratus cloud C.Bar D.Funnel
单项选择题 The dense black cumulonimbus clouds surrounding the eye of a hurricane are called（）.
单项选择题 The Beaufort scale is used to estimate the（）.
单项选择题 The area of strong westerly winds occurring between 40°S and 60°S latitude is called the（）.
