He was sitting there ________ his cigarette. Without any words, he seemed to be ________ deep

thought.   [ ]

A. at; in        

B. over; in        

C. with; at      

D. with; over

肋骨摄影检查一般不采用下列哪种体位

A．后前位

B．前后位

C．切线位

D．斜位

E．侧位