A．weakens
B．heightens
C．strengthens
D．sharpens

A．One can avoid a heart disease by eating less foods with little cholesterol.
B．One can avoid a heart disease by taking the doctor's advice to eat low cholesterol foods and anticholesteroldrugs or both.
C．There has been good scientific evidence that cholesterol foods can produce the chance of suffering a heart disease.
D．People usually believe that cholesterol foods are directly linked to heart diseas