A:米饭变馊
B:火药爆炸
C:湿衣服晾干
D:铁锅生锈
从该实验可得出浓溶液、稀溶液与饱和、不饱和溶液的辩证关系:____.
下列选项中,不能说明地球大小的是( )
The doctor advises me to take the medicine t____ a day, in the morning and evening.