paper recycling雅思阅读答案
你好，朗阁培训中心为你解答：30. sustamable 31. biodegradable 32. virgin fibre/ pulp 33. governments/ the government 34. advances 35. quality 36. contaminants 37. offices 38. sorted 39. (re)pulped 40. de-ink/ remove ink/ make white 41. refined
