When the woman saw that her son was OK after the car accident, she said _____, “Well, dear, you are the most important for me, not the expensive car. ”

A．in peace

B．in danger

C．in surprise

D．in relief

下图为某一河流的部分河段。据此回答下列小题。

若该河流流出山口，常形成的地貌是（）

A.冲积平原

B.山麓冲积扇

C.沙洲

D.三角洲