The problem of air pollution need to be solved urgently.
- M! f7 S1 j7 t/ q3 ]/ }The balance of nutrition includes five key factors: protein, carbohydrate, fat,vitamin and mineral.$ Q* X, W: p \$ P8 G I, W8 `
Police acclaimed that it was a careless driver who induced this serious accident.
7 c+ O$ l" l4 `/ HDeficiency of vitamin D will lead to severe bone diseases.1 I6 r: O; u) s9 F' ]2 \) b Z
In ancient time, the earth is considered as a flat plate.
; o# w, x6 m% D* ^) L3 N5 {少壮不努力,老大图悲伤。 |