Answer the following questions to better understand the text. (本次作业接受打字或手写拍照提交) What did each of the writer's family want after living in Las Vegas for nearly ten years? What was so unusual about the property they finally decided to purchase? How did the writer's family solve the problem of electricity? And how about water? What, in the writer's view, was one of the greatest benefits of living off the grid? What other changes were they trying to make in addtion to becoming more economical with power and water usage?