After Effects 6.5中最多能保存几个快照（snapshot）？（）
A.1个
B.2个
C.3个
D.4个
参考答案：D
首次公开发行的股票以( )方式确定股票发行价格。
A．询价
B．协商定价
C．网上竞价
D．资产核算定价
The () of the word is unknown, but it is certainly not from Greek.
A. origin
B. generation
C. descent
D. cause
