A．Salt is quite necessary for people's health.
B．Eating too much salt could do harm to the heart.
C．The quantity of salt varies among different people.
D．People are launching a campaign to eat less salt.
A．Eating more salt means more heart attacks.
B．Less salt is sure to reduce many heart-related diseases.
C．Eating less salt may lead to high blood pressure.
D．It's not clear whether eating less salt will have good results.
A．Most people consume similar amount of salt.
B．Americans eat less salt than the others.
C．Different people eat different amount of salt.
D．Salt is relevant to people's health.