We should eat more fruits and v____ every day.
Prices are r____ fast nowadays. 100 yuan can’t go a long way.
组别
10%硫酸体积/mL
温度/℃
其他物质
Ⅰ
2mL
20
Ⅱ
10滴饱和MnSO4溶液
Ⅲ
30
Ⅳ
1mL
1mL蒸馏水
能够发生银镜反应且与丙酸互为同分异构体的是( )