Everything comes with ____price; there is no such ______thing as free lunch in the world.[ ]

A. a; a    

B. the; \  

C. the ; a    

D. a; \

拳尺偏试验阳示提示______；屈腕试验阳性提示______；臂丛神经牵拉试验阳性提示 ______。