Scientistsaretryingtodevelopaspecialmaterial, 国语站 题库 2.42W 大中小设置文字大小 问题详情: Scientists are trying to develop a special material, _______ they will make use of in space.A. it B. that C. what D. one【回答】D知识点:代词题型:选择题 TAG标签:#