假设你是李华。本周六你班将组织参观位于你市郊区(suburb)的某有机

假设你是李华。本周六你班将组织参观位于你市郊区(suburb)的某有机农场。请你用英语给你们的外籍老师约翰(John)写一封邮件邀请他参加你们的活动。内容包括：

       1. 活动目的：让同学们亲身体验有机农业的耕种方式，了解吃有机食品的益处；

       2. 活动项目：①专人引导参观，探究作物轮作(crop rotation)对土壤保护的重要性；

                ②农场将划出一块地让同学们体验农活。

       注意：1. 词数100左右； 

                2. 可以适当增加细节，以使行文连贯。

 Dear John,

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Yours,

Li Hua

_{Dear John,Our class are going to visit an organic farm in the suburb of the city this Saturday．The aim of this visit is to give us a real experience of how to practice organic farming and a knowledge of the benefits of eating organic food．There will be a guided tour of the farm for us to explore the importance of crop rotation for soil protection．We will also be given a small piece of land to do the actual farm work．You are invited to attend our organic farm visit．For more information, please contact me．Yours,Li Hua}