At present，there is little doubt ________ short message plays an increasingly im

题干

At present，there is little doubt ________ short message plays an increasingly important role in our lives．

A．whether

B．if

C．that

D．which

上一题下一题 0.85难度单项选择更新时间:2011-05-17 09:28:09

小学学科试题库

初中学科试题库

高中学科试题库