海洋里的动物，谁是名副其实的潜水冠军？（）
A.抹香鲸
B.海豚
C.海豹
D.海龟
参考答案：A
His son ___________ in the mall yesterday afternoon.[ ]
A. get lost
B. got lost
C. was lose
D.losing
简述贿赂罪的概念及其主要法律特征。
