向20mL 0.5mol/L的醋酸溶液中逐滴加入等物质的量浓度的烧碱溶液,测定混合溶液的温度变化如图所示.下列关于混合溶液的相关说法错误的是( )
A:醋酸的电离平衡常数:b点>a点
B:由水电离出的c(OH-):b点>c点
C:从a点到b点,混合溶液中可能存在:c(CH3COO﹣)=c(Na+)
D:b点到c点,混合溶液中一直存在:c(Na+)>c(CH3COO﹣)>c(OH﹣)>c(H+)
Mrs. Green works very long hours every day. She usually gets up(起床 ) at 5:40. She brushes her teeth(刷牙) and goes to her workplace (工作地点). Then she runs with some kids. After that she takes a shower(淋浴). she eats her breakfast at 7:00. Her work starts(开始) at 8:10. she is good at(擅长 ) history and many boys and girls learn history from her. All the kids(孩子) like her very much. She often talks or plays games with the kids. She usually goes to bed(睡觉) after 22:00. she is often very tired(劳累) but she likes her job and loves the kids. She doesn't work on weekends. Mrs. Green likes reading at home on weekends(周末). Sometimes some kids' parents come to her home to talk about their kids. When Monday comes, Mrs. Green gets busy again.
14-7=____ 11-8=____13-7=____5+8=____
马云曾表示,“不行贿”应该是做企业最基本的底线,“这么多年来,我没有给任何(向外面)行贿的机会”。对此,有媒体评论说:“永不行贿”的马云们,好日子还在后头。”对此认识正确的有( )
①价值观有时决定人们对事物的认识和评价
②价值观影响人们的行为选择和活动的结果
③价值判断和价值选择具有社会历史性
④遵循社会发展规律的价值观促进事物发展