横向
1
Naturally occurring inorganic solid
2
Particle of light
4
Infectious microscopic agent
5
Compound containing oxygen
8
Push or pull on an object
10
Substance with pH below 7
纵向
2
Tectonic landmass section
3
Chemical element in table salt
6
Element found in all living things
7
Gas essential for breathing
9
Substance with pH above 7