—I hear there was a road accident this morning.

—Yes. _____ car hit the blocks and _____ driver was badly injured.[ ]

A. /; /          

B. The; a        

C. The; the        

D. A; the

内燃机混合加热理想循环的组成依次为：绝热压缩过程、定容加热过程、定压加热过程、绝热膨胀过程和（）。

A.定容放热过程

B.定压放热过程

C.定容排气过程

D.定压排气过程