To save the drowning child the boy plunged into the icy water without hesitation his ow

问题补充：

To save the drowning child, the boy plunged into the icy water without hesitation, his own safety.

A. despite of

B. regardless of

C. unaware of

D. because of

答案：

A. despite of

(答案→)B. regardless of

C. unaware of

D. because of

解析：考查短语辨析。句意“为了救溺水的儿童，那个男孩毫不犹豫，一头扎进结冰的水里，丝毫不顾自己的安全。”A“尽管”；B“不管，不顾”；C“不知道”；D“因为”。故选B。