His parents both died in the traffic accidents, ________ him a lot of debts.

A．having left

B．left

C．to leave

D．leaving

墨子主张“兼相爱”“交相利”，韩非子主张“法治”。造成这种分歧的根源是（）。

A.社会的长期动荡不安

B.代表的阶级不同

C.百家争鸣的趋同现象

D.所处时代不同