A-A+
When Otis came up with the idea of a lift ___
问题详情
When Otis came up with the idea of a lift, ________．
A．he sold it to the architects and builders immediately．
B．The Egyptians used it to build the Pyramids．
C．It was accepted favorably by the public．
D．Most people had doubt about its safety． 请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：D
问题问“当Otis想出电梯这个想法的时候,…”。利用问题句中的特征词“Otis"作为答案线索，在第4段找到答案相关内容：Otis发明的刹车使人们对这个新玩意儿增加了信心，他在游乐场里让大家试乘J，几年后才把这个想法出售给建筑师和营运商。这说明刚开始人们还是对电梯的安全性心存顾虑。
