What is the professors opinion about the dot－com crash？A．She thinks that people should hav

What is the professors opinion about the dot-com crash？

A．She thinks that people should have realized it would happen.

B．She does not believe that anything like it will happen again.

C．She is surprised that it did not have more serious consequences.

D．She is confident that people learned a valuable lesson from it.

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！