鼻咽后外侧结构为
A.鼻腔 B.咽隐窝C.椎前间隙 D.舌骨E.甲状软骨
参考答案:B
补全对话。
A: 1 ?
B: My birthday is on September 10th.
A: Oh, really? It's Teachers'Day, too.
B: Yeah!
A: 2 a birthday present?
B: Yes, I have a computer.
A: Who gives it to you?
B: 3 .
A: Oh, your father is so kind!
B: 4 .
A: 5 .
变色范围必须全部在滴定突跃范围内的酸碱指示剂才可用来指示滴定终点。 ( )