根据实际情况回答问题。

1. What's for your breakfast?                                                                

2. Who runs faster, you or your friend?                                                  

3. How do you go to school every day?                                                   

4. What did you do last weekend?                                                           

5. How do you spend your summer holiday?                                            

用兆欧表摇测电缆或电容器绝缘电阻时应注意哪些事项？为什么？