t sunqjy. frankly, all these materials are from different friends and from differnet resources, so, maybe we will meet across all kinds of ciruation. and the earlier the materials are hand in, the more possilbe that the lower version softwares are needed. hope you are satisfied by my explain about your question.
to henyu: as a greenhand, you are always be welcomed here. however, in your practice life, if you are a person who used to complainning others in an unpolite way at the first glance, i do not think that is a positive way. before you enjoy these materials, do you know how many people have done how many works for them? also , we need the good advices to improve our work. and about the money charged problem, will solve it in near future.
wish you a qualified peron without moral problem in future.