本期导读：
1． 怎样提高英语听力
http://english.cersp.com/ziyuan/200705/2020.html
2．趣味英文俚语：“当猪都飞起来”是何意？
http://english.cersp.com/ziyuan/beike/200705/2022.html
3．What Are the Origins of May Day?
http://english.cersp.com/ziyuan/beike/200704/1905.html
4．如何完美表达书信中的“谢谢”
http://english.cersp.com/ziyuan/beike/200704/1989.html
5．美丽的英语名言
http://english.cersp.com/ziyuan/200703/1830.html