A.to test whether smoking has a positive effect on the mental capacity of smokers |
B.to show how smoking damages people’s mental capacity |
C.to prove that smoking affects people’s regular performance |
D.to find out whether smoking helps people’s short-term memory |
A.Active smokers in general performed better than deprived smokers. |
B.Active smokers responded more quickly than the other subjects. |
C.Non-smokers were not better than other subjects in performing simple tasks. |
D.Deprived smokers gave the slowest responses to the various tasks. |
A.smokers should not expect to become airline pilots |
B.smoking in emergency cases causes mental illness |
C.no airline pilots smoke during flights |
D.smokers may prove unequal to handing emergency cases |