题目

One evening Mr. Read took his daughter to a restaurant. They sat down and there were many people in the restaurant. They waited and waited, but no waiter came to their table. Mr. Read said, “I’m hungry. I can’t wait any longer.” He waited for a minute and said, “Now I’m going to do something to get a waiter soon.” He went out of the restaurant and telephoned the restaurant, “My daughter is at a table in your restaurant. She’s wearing a red hat.”The waiter looked around, then he said to Mr. Read. “Yes, she’s here. Do you want to talk to her?”“No, I don’t,” Mr. Re最多能承受4900N拉力的钢丝绳，最多能在绳下端挂0.50.5t的货物，为测量质量约为500g的物体所受的重力，所用弹簧测力计的量程应是4.94.9N．