Merge pull request #40 from hopesfish/dev

Dev
Merge pull request #41 from hopesfish/dev

增加无效区间
Merge pull request #42 from hopesfish/dev

完善UI
Merge pull request #43 from hopesfish/dev

完善UI
1.修改测试回复2次提交出现的问题
Merge pull request #39 from pengqin/dev

Dev