问题
选择题
—How did you manage to get such a nice old painting?
—Quite _______.
A．by accidents
B．by a chance
C．by accident
D．by incident
答案
答案：C
考查固定短语：偶然地，无意地by accident =" by" chance，句意：你是怎么成功的得到了如此好的古老的一幅油画。非常偶然。所以选C。