结构化产品嵌入了（）就具有了路径依赖特征。
A.欧式看跌期权空头
B.亚式看涨期权多头
C.回溯看涨期权多头
D.两值看涨期权空头
参考答案：B, C
－Sixteen-year-olds should _____ to drive.
－I agree. They aren't serious enough at that age. [ ]
A. not be allowed
B. be allowed
C. not be allow
D. be allow
活动课程的主要倡导者是（ ）
A．赫尔巴特
B．卢梭
C．柏拉图
D．杜威
