A cloud sequence of cirrus,cirrostratus,and altostratus clouds followed by rain usually signifies the approach of a(n) ______.(1.0)
A.occluded front B.stationary front C.warm front D.cold front正确答案D
A cloud sequence of cirrus,cirrostratus,and altostratus clouds followed by rain usually signifies the approach of a(n) ______.(1.0)
A.occluded front B.stationary front C.warm front D.cold front正确答案D
