Scientists are trying to develop a special material, _______ they will make use

题干

Scientists are trying to develop a special material, _______ they will make use of in space.

A．that

B．what

C．it

D．one

上一题下一题 0.64难度单项选择更新时间:2013-02-20 06:57:10

小学学科试题库

初中学科试题库

高中学科试题库