将28 g KOH固体溶于172 g水中形成溶液A。（1）溶液A的质量分数为 ；（2）若将该溶液蒸发掉100 g水后形成溶液B，体积为80mL。则溶液B的物质的量浓度
I think doing sports is _____our health. A. good at B. bad for C. good for D. good to
The character was such a social ___, but was loved for his optimism and determination to overcome all difficulties. A . success B. pity C. winner D. failure
It was my birthday last Thursday. I decided to __36__ by inviting a few friends out to supper. I chose a restaurant in a __37__ part of town. It is one of my favorite restaurants because t
In Modem society there is a great deal of argument about competition. Some value it highly, believing that it is responsible for social progress and prosperity; others say that competition is bad;
下列句子中，没有语病的一项是 A．歌王的这次告别演出将是一场顶级的艺术盛典，老帕已经做好了最后一次在中国观众 面前秀出他无与
对加粗词语解释全对的一组是①怎不将天地也生（产生）埋怨 ②不提防遭刑宪（刑法，刑律） ③错勘（分辨、判断）贤愚枉（徒然）作天 ④待我嘱
