横向
1
Gas essential for breathing
6
Naturally occurring inorganic solid
7
Smallest unit of an element
纵向
2
Natural satellite of Earth
3
Precious yellow metallic element
4
Nerve cell in the brain
5
Unit of heredity
6
Tissue that contracts for movement
Gas essential for breathing
Naturally occurring inorganic solid
Smallest unit of an element
Natural satellite of Earth
Precious yellow metallic element
Nerve cell in the brain
Unit of heredity
Tissue that contracts for movement