We learned a lot from her father, an engineer ___ does research ___ science.

A．that; into

B．whom; on

C．who; into

D．which ; on

“花气袭人知骤暖，鹊声穿树喜新晴”，这是南宋诗人陆游《村居书喜》中的两句诗，对于前一句，从物理角度可理解为：花朵分泌的芬香油分子___________加快，说明当时周边的气温突然____________。