Oil is derived from the ______ of microsco
问题:
Oil is derived from the ______ of microscopic sea creatures, and is even older, according to most geologists.
A.layouts
B.reminders
C.remains
D.leftovers
Oil is derived from the ______ of microscopic sea creatures, and is even older, according to most geologists.
A.layouts
B.reminders
C.remains
D.leftovers