An engineer has designed _______ robot that can work in _______ deep sea to clea

题干

An engineer has designed _______ robot that can work in _______ deep sea to clean waste.

A．a; the

B．a; a

C．/; the

D．the; /

上一题下一题 0.85难度单项选择更新时间:2011-10-27 12:40:31

小学学科试题库

初中学科试题库

高中学科试题库