关于and造句的问题this is black,and is less harmful to eyes 这句话有语法错误吗?and后是不是还要加个this?

关于and造句的问题this is black,and is less harmful to eyes 这句话有语法错误吗?and后是不是还要加个this? 关于BL的句子. 微机原理的问题：为什么 “MOV BL,8CH AND 73H ”等于0 改英语语法Who is Victoria and Daniel among those?Is this who they are?2句话都是关于is还是are的问题,Who is Victoria and Daniel among them? 关于BL漫用词的问题,鬼蓄攻、女王攻、万年受等等,这些词是什么意思? this is的用法急不要造句 用This is造句 Is this怎么造句 is this ...for ...造句 css中关于first-child的问题p:first-child{color:blue;} This is some text.This is some text.Note:For :first-child to work in IE8 and earlier,a DOCTYPE must be declared.p:first-child{color:blue;}, 有哪些动画是关于BL的 关于奥运五环颜色英语的问题Red and yellow is Yellow and blue isRed and blue is 关于is this a handbag这句的问题is this a handbag,这句能不能改成is it a handbagis it a car能不能改成is this a car?总之问题就是it和this区别在哪里,为什么? this is because 怎么造句? 胤禩 bl 关于胤禩的BL文,求推荐,最好新文 用this is造句2个六年级的 and this is it This photo is ( )and ( ).