Our school is famous _____________ its sports. [ ]
A. on
B. in
C. for
D. of
答案:C
一般而言,期权的协定价格与市场价格间的差距越大,时间价值越大。 ( )
()是计算机的输出设备。
A.打印机
B.鼠标
C.扫描仪
D.键盘