A：熔点：NaI>NaBr
B：硬度：MgO>CaO
C：晶格能：NaCl<NaBr
D：熔沸点：CO2>NaCl
How to keep healthy
As a middle school student, I think it is really important to keep healthy.
阅读诗歌，回答问题
初夏睡起
【宋】杨万里
梅子流酸溅齿牙，芭蕉分绿上窗纱。
日长睡起无情思，闲看儿童捉柳花。
