题目

—Lee Zhai has been watching the Korean TV series Temptation of Wife the whole night.    — _____________. A. So her parents have                 B. So have been her parents C. Her parents have been so                D. So have her parents   答案：D某人射击一次击中目标的概率为0.6，经过3次射击，此人恰有两次击中目标的概率为________．