What do scientists know about prehistoric dinosaurs?
A.They were killed by one vast volcanic explosion.
B.They lived on the earth for about 10. 000 years.
C.They could not coexist with other animals.
D.They died out 65 million years ago.
正确答案是D
What do scientists know about prehistoric dinosaurs?
A.They were killed by one vast volcanic explosion.
B.They lived on the earth for about 10. 000 years.
C.They could not coexist with other animals.
D.They died out 65 million years ago.
正确答案是D