A：元素的非金属性：N＜O＜F
B：酸性：HClO4＞H2SO4＞H3PO4
C：热稳定性：HF＞HCl＞H2S
D：原子半径：Al＞Mg＞Na
____的景观 ____的油菜花 ____的豌豆花
____的水彩画 ____的森林 ____的峡谷
将40 g 10%的氢氧化钠溶液与100 g 3.65%的盐酸混合，所得溶液中溶质的质量分数约为
一I think I've got a bad cold，Doctor．Shall I take some medicine?
一No need．Your body itself is able to the virus. Just drink more water and rest．
一I hear you have a home robot．
一Yes，it's amazing. It do all my housework．
