He had gone away on business and would not return to the hotel until the next day. I should have to wait till ______ I could thank him for the present.

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

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