Water is the most widely used resource in ______ industry, and plays ______ majo

题干

Water is the most widely used resource in ______ industry, and plays ______ major role in energy production.

A．不填; a

B．the; a

C．an; 不填

D．an; the

上一题下一题 0.64难度单项选择更新时间:2013-12-02 02:47:58

小学学科试题库

初中学科试题库

高中学科试题库