21世纪大学英语应用型综合教程2 1.docx

21 世纪大学英语应用型综合教程 2 1-5单元课后答案 （完整版） Unit 1 1.In the six-and-onehalf years sincetthe federalgovernment beagan certifyinfgood as “organic”, Americans have taken to the idea with considerable en自th联us邦ia政sm府. 六年半 前认证“有机”食品以来，美国人以极大的热情接受了这一概念。 2.To eat well, says Michael Pollanthe,the author ofIn Defens