用所给词的适当形式填空。

1. He'd like some dumplings _______ (eat) .

2. The students stop _______ (write) and _______ (listen) to the teacher.

3. The bus _______ (turn) left at the second _______ (turn).

4. There _______ (有) some birds in the tree.

5. Look, can you see the thief ______ (run) out of the shop?

用局麻药阻滞周围神经末梢或神经干（节丛）的冲动传导，产生一个局限性麻醉区，称局部麻醉。可供临床使用的局麻药品很多。

下列哪一项为引起局麻药中毒的原因（）。

A.局麻药注入蛛网膜下腔

B.局麻药注入血管

C.局麻药过敏反应

D.局麻药高敏反应

E.注入硬膜下间隙