A.洗澡时舒适的水温为80℃
B.纯水的密度为1.0×103kg/m3
C.普通中学生的鞋长约为50cm
D.光在真空中的传播速度为340m/s
答案:B
下列递变规律正确的是
A.热稳定性:HCl>HF>H2O
B.元素的最高正化合价:F>S>C>K
C.碱性:NaOH>Mg(OH)2>Ca(OH)2
D.沸点:金刚石>硫>水>氮气
Shanghai is bigger than_____ in Jiangsu and bigger than_______in China.
A.any city, any city
B.any city, any other city
C.any other city, the other cities
D.any other city, any city