两种封面教材1.http://image.baidu.com/i?ct=503316480&z=&tn=baiduimagedetail&ipn=d&word=%E4%BA%BA%E6%95%99%E7%89%88%E9%AB%98%E4%B8%AD%E5%8E%86%E5%8F%B2%E4%B9%A6%E5%B0%81%E9%9D%A2&step_word=&ie=utf-8&in=3759&cl=2&lm=-1&st=-1&pn=1&rn=1&di=170509892300&ln=1846&fr=&&fmq=1382491937279_R&ic=0&s=&se=1&sme=0&tab=&width=&height=&face=0&is=&istype=2&ist=&jit=&objurl=http%3A%2F%2Fimg01.papabao.com%2Fp%2Ft0%2F4160%2Fdf609511-9490-40d4-a97d-a3c5c105b2d2.jpg#pn1&-1&di170509892300&objURLhttp%3A%2F%2Fimg01.papabao.com%2Fp%2Ft0%2F4160%2Fdf609511-9490-40d4-a97d-a3c5c105b2d2.jpg&fromURLippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Brwrwkw5_z%26e3Bv54AzdH3Fr6517vpAzdH3Fdmbblba_z%26e3Bip4s&W300&H300&T10894&S18&TPjpg
2.http://www.pep.com.cn/gzls/js/tbjx/kb/dzkb/bx1/201008/t20100830_831453.htm。
另外这俩个不同封面的教材有什么区别?再次谢谢。