下列哪项不是理想正常所要求的（）

A．保存全副牙齿

B．牙齿在上下牙弓上排列很整齐

C．有轻微的错畸形，对于生长过程无大妨碍者

D．上下牙的尖窝关系完全正确

E．上下牙弓的关系非常理想

According to Alan Greenspan, which part of the market could spread to other sectors of the economy()

A. The capital market could spread to other sectors of the economy.

B. The stock market could spread to other sectors of the economy.

C. The sub prime mortgage market could spread to other sectors of the economy.

D. The future market could spread to other sectors of the economy.