四六级考试

【单选题】 Yesterday I met' an old friend of mine by ______, which was really a pleasant surprise.
A．occasion
B．accident
C．way
D．purpose

网考网参考答案：B
网考网解析：
[解析] by accident应译成“偶然地”，其他词不能与介词by搭配，故选B。 查看试题解析出处>>