下列用电器是利用电流做功获得机械能的是（　　）

根据句意及首字母提示完成单词 
Do you like eating ice cream in s ____?
M ____  is not everything, but we must have it. 
Don't run when you see a dog.  It is d____. 
Miss Smith is a good teacher,  and she t____  us English.
As a reporter,  he works for a m____.