A．Science has not made any steps in making food more fit to eat.B．Science makes people suffer from cancer.C．Some potentially harmful substances have been added to our food.D．Science makes people not know whether certain foods are harmful or not.
A．Science has not made any steps in making food more fit to eat.
B．Science makes people suffer from cancer.
C．Some potentially harmful substances have been added to our food.
D．Science makes people not know whether certain foods are harmful or not.