横向
1
Our home planet
4
Tissue that contracts for movement
5
Center of an atom or cell
9
Particle of light
12
Unit of force
13
Amplified beam of light
纵向
2
Basic unit of life
3
Reddish electrical conductor
6
Mass per unit volume
7
Group of similar cells
8
Unit of heredity
10
Smallest unit of an element
11
The Red Planet
14
Magnetic metallic element