A、A.不同深度的颜色
B、B.晕消线
C、C.等高线
D、D.示坡线
第7题
A、It's founded in the heyday of the Song Dynasty.
B、It's founded in the heyday of the Tang Dynasty.
C、It's founded in the heyday of the Ming Dynasty.
D、It's founded in the heyday of the Yuan Dynasty.
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