The experiment shows that proper amounts of physical exercise, if _______ regularly, can make a

difference to our health.[ ]

A. being carried out  

B. carrying out      

C. carried out      

D. to carry out

急性胆囊炎术中发现胆囊内有多发绿豆大小结石，宜采用（）

A.胆囊造口术

B.胆囊切除术

C.胆总管切开T管引流术

D.括约肌切开术

E.胆囊切除、胆总管探查T管引流术