根据对话情景，填入恰当的单词。（每空一词，每词1分，共6分）

A: I’m tired because I can’t sleep well.

B: Do you drink coffee before you go to bed?

A: No, I don't.

B: If I 小题1:_________you, I would take a long walk before going to bed.

A: What would you do if the teacher asked you to give a speech? I can’t sleep well小题2:___________ I’m worrying about this.

B: I’d say I was ill. I’m very shy. I would be小题3:_________ to speak in front of many people.

A: Oh, but I have小题4:___________ problem. There is a new student in our school. What if I want to be her friend?

B: That’s easy. You can introduce小题5:__________ to her.

A: Maybe she will be glad to make小题6:         with me.

B: Wish you good luck!

下图甲表示反射弧中三个神经元及其联系，其中­­—○—<表示从树突到胞体，再到轴突及末梢（即一个完整的神经元模式）；图乙表示突触的亚显微结构模式图。联系图解回答下列问题：

手术过程中，使用某种局部麻醉剂，能使乙图中［］（）中释放的（）发生变化，从而暂时失去兴奋传导功能。