题目内容
（请给出正确答案）
提问人：网友c********1
发布时间：2022年3月21日 20:49
[单项选择题]
In many areas atoll clouds (clouds of vertical development) are produced over small islands. These are the result of（）.
A.rising air currents produced by the warm islands
B.warm air from the sea rising over higher land areas
C.cool land air mixing with warm sea air
D.descending air over the islands
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