在人寿保险保险费厘定过程中，定价假设因素的确定既困难又有一定的风险，这是因为对未来不能准确预测，因而各种假设因素具有的特征是（）

A.风险特征

B.确定特征

C.概率特征

D.恒定特征

Just consider, it was only one minute when she left school, and the impressions of six years are not got over in that space of time.

A. only one minute she left

B. but one minute that she left
C. one minute when she had left

D. only one minute before she left