【知识单一性训练】 Ⅰ.1. litter 2.bottom 3.advantage 4.cost 5.plastics 6. methods 7.cruel 8.industry 9.law 10. afford Ⅱ. 11. fishermen 12. ugly 13. wooden 14. methods 15. harmful 16. transport 17. cruel 18. law 19. related 20. pollution Ⅲ.2122232425262728

【知识单一性训练】 Ⅰ.1. litter 2.bottom 3.advantage 4.cost 5.plastics 6. methods 7.cruel 8.industry 9.law 10. afford Ⅱ. 11. fishermen 12. ugly 13. wooden 14. methods 15. harmful 16. transport 17. cruel 18. law 19. related 20. pollution Ⅲ.2122232425262728