To save the drowning child, the boy plunged into the icy water without hesitatio

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

试题答案

B

考查介词短语的含义。此处regardless of his own safety意为：不顾个人安危。