()is a high layer of cloud in the front of
题型:单项选择题
问题:
()is a high layer of cloud in the front of small flakes or cauhflower,white in colour with no dark shadows in between.
A.Cirrostratus
B.Cirrus
C.Cirrocumulus
D.Altostratus
()is a high layer of cloud in the front of small flakes or cauhflower,white in colour with no dark shadows in between.
A.Cirrostratus
B.Cirrus
C.Cirrocumulus
D.Altostratus