单项选择题
In the relatively calm area near the hurricane center，the seas are（）.
A.moderate but easily navigated B.calm C.mountainous and confused D.mountainous but fairly regular as far as direction is concerned
单项选择题 In the doldrums you will NOT have（）.
单项选择题 In the doldrums you can expect（）.
单项选择题 In reading a weather map，closely spaced pressure gradient lines would indicate（）.
