汽车的生产过程
参考答案：
是指将原材料转变为汽车产品的全过程。
— What's the matter with Tom? He seems ____ sad.
— His pet dog died. [ ]
A. feel
B. feels
C. to feel
D. feeling
胃溃疡手术治疗的适应证有哪些?为什么胃溃疡的手术适应证较十二指肠溃疡宽?
