The finding ( ) smoking, and alcohol intake in the PD (Parkinson’s disease) patients and controls. All smokers among the controls ____ cigarette smokers.
A.shows; are B.shows; were C.showed; were D.shows; have been正确答案B
The finding ( ) smoking, and alcohol intake in the PD (Parkinson’s disease) patients and controls. All smokers among the controls ____ cigarette smokers.
A.shows; are B.shows; were C.showed; were D.shows; have been正确答案B