| 
 UID420714 帖子24 积分25 学分257 个 金币0 个 在线时间1 小时 
 | 
| it is very important for improving the lives of individuals,however,it is estimate that 880 millions adults are illiterate,that is they are unable to read or write. to learn his system.people must first know how to write letters of ...and learn which sound they represent.
 | 
 
1
评分人数
 |