The accident is ________ reminder of the potential dangers involved in ________

题干

The accident is ________ reminder of the potential dangers involved in ________ oil production in this area.

A．a; the

B．the; /

C．the; the

D．/; a

上一题下一题 0.85难度单项选择更新时间:2013-09-18 06:15:09

小学学科试题库

初中学科试题库

高中学科试题库