Paper-making is _____ ofancient China.[
题型:选择题
问题:
Paper-making is _____ of ancient China.[ ]
A. one of greatest inventor
B. one of the greatest inventors
C. one of greatest invention
D. one of the greatest inventions
Paper-making is _____ of ancient China.[ ]
A. one of greatest inventor
B. one of the greatest inventors
C. one of greatest invention
D. one of the greatest inventions