一种交保费灵活、保额可以调整，非约束性的寿险是（）
A、分红保险
B、投资连接保险
C、两全保险
D、万能险
参考答案：D
Hearing his father was seriously ill, ______.
A．he burst into tears
B．his eyes were filled with tears
C．his face lost its colour
D．tears came to his eyes
