选项
甲
乙
丙
戊
A
NH3
O2
NO
H2O
B
Fe
H2
Fe2O3
C
Al(OH)3
NaOH溶液
NaAlO2溶液
过量CO2
D
Na2O2
CO2
Na
A:A
B:B
C:C
D:D
“稻花香里说丰年,听取蛙声一片”,这里的蛙声是谁发出的?有何意义?( )
the great teacher Zhang Lili was in hospital, many people hoped she would get better soon.