问题详情

The author says ". . . the public has no reason to panic" (Paragraph 5) because ______.
A．the transition is still thousands of years away
B．the new transition will come 780 000 years from now
C．the transition can be precisely predicted by scientists
D．the process of the transition will take a very long time to finish请帮忙给出正确答案和分析，谢谢！