A:break off
B:break down
C:break away
D:break up
健康的正确含义是( )
①Ne ②HCl ③P4④Na2O2⑤Na2S ⑥NaOH ⑦H2O2⑧NH4Cl ⑨AlCl3⑩MgCl2
请用上述物质的序号填空: