Ⅰ.单词拼写
1．When you find someone hurt，you should perform first a________ as soon as possible.
2．He s________ the tube hard and the last bit of toothpaste came out.
3．He got an e________ shock when pushing the button.
4．The injured person lay on the ground，b________ heavily.
5．It is neither cold nor hot.It is m________.
