1 Today's parents tend to expose their children to as many kinds of arts and cultures as possible.
2 Only by combining theories with practice can we make a success.
3 All our concepts about the universe are based on the theory of Copernicus
1 Today's parents tend to expose their children to as many kinds of arts and cultures as possible.
2 Only by combining theories with practice can we make a success.
3 All our concepts about the universe are based on the theory of Copernicus