4年级英语演讲稿

　　It was a cloudleday. The warmth of the fall sun made the day seem as if itwould be perfect. Yes, for me perhaps, but not exactly for the technician whowas working on one of my laboratory machines. The technician definitely knewwhat he was doing and seemed exceptionally qualified except for one thing. Hewas no electrician. He had found a motor that he identified as being bad. Themotor shaft was much too difficult to turn and he had indicated that this was amajor problem. "Expect two to three days for a new one to arrive," he said.

　　One thing my friend didn't understand is that when power is supplied to agenerator, it becomes a motor and when mechanical power is applied to a motor,it becomes a generator. During the proceof his working on the machine hedisconnected the leads to the motor and spun the shaft turning the motor into agenerator. Disconnecting the leads in effect took the load off the motor, theleads being connected causing the motor not to turn freely. He looked ratherperplexed to see the motor shaft spin so freely. For reasons unknown to me, hespun the shaft again and grabbed the wires protruding from the motor. I don'tbelieve I have ever heard quite the string of expletives that this man let flyfrom his mouth. With his eyes widened he had to slap his hand loose from thewires as the flow of generated electricity locked the grip of his hand.

　　Now this being funny all by itself, it evidently wasn't funny enough forthe technician because he spun the motor and grabbed the leads again. Anotherstring of expletives that have never been heard previously by man were unleashedunto the world.

　　Several years ago, I had heard about a man who went fishing with an oldcrank type telephone generator. He'd drop the leads into the water and crank thegenerator causing the fish to be shocked whereby they would float to the top forhim to collect. On this warm and cloudlefall day, I'd say, the technician's fishhad all floated to the top.