在实验室里，下面试剂瓶中所盛放的药品属于碱溶液的是（ ）
A．
B．
C．
D．
答案：B
---He's never late for school, _______ he?
---_______. He gets to school on time every day.
A．isn't; No, he isn't
B．is; Yes, he is.
C．isn't; Yes, he isn't
D．is; No, he isn't.
斑可感受小管液中NaCl的浓度变化，但与肾素的释放无关。
