城市通信工程规划系统中，( )被誉为国家的神经系统。
A．邮政通信 B．电信通信C．移动通信 D．广播电视系统
参考答案：B
把4本书分给3个小朋友，那么肯定有一个小朋友分到______本书．
The most likely motivation for a speculator to sell a security short is based on the investor’s belief that the:（）
A. security is overpriced.
B. required rate of return on the security will decline.
C. short sale proceeds could be invested for extra returns.
