读对话，判断正(√)误(×)。

Mr. Li: I have a new pen pal, and her name is Amy. Do you have a pen pal?

Mr. Black: Yes, I have. His name is John. He likes swimming. He goes to work by bus.

                What's your pen pal's hobby?

Mr. Li: Amy likes collecting stamps. She usually reads newspapers in the morning. She is a teacher.

Mr. Black: Does she teach English?

Mr. Li: No, she doesn't.

( ) 1. Mr. Black has a pen pal, and his name is John.

( ) 2. John likes collecting stamps.

( ) 3. Amy teaches English.

电能的利用给人们的生活带来了极大的便利，人们使用电器时应注意安全，当用湿手触摸开关时，极易造成触电事故，这是因为生活用水是______，当水流入开关时，会造成______与电源相连，从而发生触电事故．