横向
1
Positive particle in nucleus
4
Reddish electrical conductor
5
Gas essential for breathing
纵向
2
Element found in all living things
3
Unit of heredity
4
Solid with repeating atomic pattern
6
Curved glass that refracts light
7
Unit of energy
Positive particle in nucleus
Reddish electrical conductor
Gas essential for breathing
Element found in all living things
Unit of heredity
Solid with repeating atomic pattern
Curved glass that refracts light
Unit of energy