A:Cl﹣、SO42﹣
B:NO3﹣、CO32﹣
C:Cl﹣、SO32﹣
D:Cl﹣、CO32﹣
真爱自然,保护环境是大人们的事,与我们小学生没关系。
一些食物的近似pH如下:
食物
葡萄汁
苹果汁
牛奶
鸡蛋清
pH
3.5~4.5
2.9~3.3
6.3~6.6
7.6~8.0
其中显碱性的食物是( )
The fire was so damaging that the store had to close its doors.
My brother is going _________ to be a doctor.