初中英语核心词汇五百讲之stay，steal，step
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/27be98c35285890...
TEACHERAY 第113页
初中英语核心词汇五百讲之start
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/2a254dc85285890...
初中英语核心词汇五百讲之stand
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/2980aee05285890...
初中英语核心词汇五百讲之square，stamp，stable
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/29cbd2a45285890...
初中英语核心词汇五百讲之spirit，spring
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/deee62065285890...
初中英语核心词汇五百讲之spell
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/e132f9405285890...
初中英语核心词汇五百讲之speech，speed
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/dedc33165285890...
初中英语核心词汇五百讲之spare，speak
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/dc89c9615285890...
初中英语核心词汇五百讲之soon，sort
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/dd2dcf505285890...
初中英语核心词汇五百讲之sometimes
http://1301668301.vod2.myqcloud.com/b5f2afc7vodtranscq1301668301/df1389245285890...