在“递病递瘳盖十年往矣”中，“往”之义为（）
A.去到
B.过去
C.以前
D.大约
参考答案：B
It was quite a serious accident, ________caused by careless driving.
A．which I think was
B．I think which was
C．which I think it was
D．I think which it was
当船舶排水量一定时，由较大密度水域驶入较小密度水域时（）。
A.排水体积增大，相应吃水增加
B.排水体积增大，相应吃水减少
C.排水体积减少，相应吃水增多
D.排水体积减少，相应吃水减少
