Summary of second lesson
摘要:
Second lesson mainly talk about the relations between foods and sunlight. Some farmers think vegetable will grow well with plenty of sunlight, but some experts don't think so. They think some v... 阅读全文
posted @ 2006-03-08 22:56 songyujin 阅读(222) 评论(0) 推荐(0) 编辑