Điền từ thích hợp vào chỗ chấm
People was ...........by the Chinese in the first century AD. Most paper is made ...........wood . when trees are ........... they are transported ............. land or water to paper mill . here they are cut ............ and the wood is broken up into fibres . which are ................. with water and chemiscals . this wood pulp is then dried on a machine and .................. into paper
One tree is needed for every 400 ............... of a...
Đọc tiếp
Điền từ thích hợp vào chỗ chấm
People was ...........by the Chinese in the first century AD. Most paper is made ...........wood . when trees are ........... they are transported ............. land or water to paper mill . here they are cut ............ and the wood is broken up into fibres . which are ................. with water and chemiscals . this wood pulp is then dried on a machine and .................. into paper
One tree is needed for every 400 ............... of a typical forty - page newspaper . If half the adults in Britaint each buy one daily paper , this uses up over 40.000 trees a day . Trees are being cut down faster than they are being .............. so there may be a(n)................. paper shortage before the year 2010
Điền từ thích hợp vào chỗ chấm
People was ......invented.....by the Chinese in the first century AD. Most paper is made ...from........wood . when trees are ......cut down..... they are transported ......by....... land or water to paper mill . here they are cut .......up..... and the wood is broken up into fibres . which are .....mixed ............ with water and chemiscals . this wood pulp is then dried on a machine and ..........copies........ into paper
One tree is needed for every 400 ......replaced......... of a typical forty - page newspaper . If half the adults in Britaint each buy one daily paper , this uses up over 40.000 trees a day . Trees are being cut down faster than they are being ........serious...... so there may be a(n)................. paper shortage before the year 2010