常用的酸碱滴定液有
A．盐酸滴定液
B．硝酸滴定液
C．硫酸滴定液
D．氢氧化钠滴定液
E．高氯酸滴定液
参考答案：A,C,D
用动词be的适当形式填空。
1. I __________ a girl. My name __________ Jenny.
2. We __________ students. __________ you students?
3. How far __________ Beijing?
4. My son and I __________ going on a trip to Beijing.
固态发酵
