单项选择题
Dawson was dissatisfied with soft iron pitons because （）
A．they were too soft to bear the climber’s weight B．they were the only pitons he could afford to buy C．they coul not last long D．they were made of iron
单项选择题 What does the work "pest" in the second sentence of the first paragraph mean（）
填空题 A．funny B．only C．July D．lucky
填空题 A．town B．gown C．show D．drown
