Electricity () by the Greeks a good many y
题型:单项选择题
问题:
Electricity () by the Greeks a good many years ago.
A.was first found
B.was first discovered
C.has first been discovered
D.was seen first
Electricity () by the Greeks a good many years ago.
A.was first found
B.was first discovered
C.has first been discovered
D.was seen first