問題詳情:
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
知識點:代詞
題型:選擇題
問題詳情:
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
知識點:代詞
題型:選擇題