单项选择题
A．used B．using C．to use D．use
What does the work "pest" in the second sentence of the...
单项选择题What does the work "pest" in the second sentence of the first paragraph mean（）
A．Harmful thing. B．Insignificant thing. C．Troublesome thing D．Trivial thing
Dawson was dissatisfied with soft iron pitons because （...
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
A．funny B．only C．July D．lucky
填空题
