横向
1
Particle of light
2
Unit of heredity
4
Path of a planet around the sun
5
Ball of burning gas in space
10
Precious yellow metallic element
11
Naturally occurring inorganic solid
纵向
2
Force that attracts objects together
3
Natural satellite of Earth
6
The Red Planet
7
Gas essential for breathing
8
Unit of power
9
Second lightest element