MMP1的缺点是()
A.主观题较多
B.受文化背景影响
C.测试时间长
D.受动机冲突影响
参考答案:B, C
I'm sorry to _____ the recorder for such a long time. [ ]
A. keep
B. have kept
C. be keeping
D. have been kept
买入并持有策略下投资组合价值线的斜率由资产配置的比例决定。()