下列属于土地行政法律的是（）。
A.《民法通则》
B.《土地管理法实施条例》
C.《农村土地承包法》
D.《土地登记规则》
参考答案：B
The risk-free interest rate is 5 percent, and the return on market portfolio is 8 percent. A stock with a beta of 0. 5 that has an estimated rate of return of 7 percent is most likely:（）
A. overvalued.
B. undervalued.
C. correctly valued.
断电会使存储数据丢失的存储器是
A．RAM
B．硬盘
C．ROM
D．软盘
