- 搜标题
- 搜题干
- 搜选项
单项选择题
How did “columnar joints” come into being?
A．The magma condensed into stone columns.
B．The pumice stones piles layer by layer.
C．The volcanoes look like columnar joints.
D．Creatures were gradually fossilized and they slowly turned into a thick limestone layer on the seabed
B．The pumice stones piles layer by layer.
C．The volcanoes look like columnar joints.
D．Creatures were gradually fossilized and they slowly turned into a thick limestone layer on the seabed
