(单选题)19: Corn originated in the New World and thus was not known in Europe until Columbus found it ________ in Cuba.
A: being cultivated
B: been cultivated
C: having cultivated
D: cultivating
(责任编辑:admin) |
(单选题)19: Corn originated in the New World and thus was not known in Europe until Columbus found it ________ in Cuba.
A: being cultivated
B: been cultivated
C: having cultivated
D: cultivating
(责任编辑:admin) |