Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer.

If you don’t work much harder, you won’t pass the exam.

Unless you__________much harder, you__________the exam.

A. Drug are always given to animals for medical reasons

B. Food may cause forty percent of the cancer in the world

C. Researchers have known about the potential hazard of food additives for more than 45 years

D. Some of the additives in our food are added to the food itself and some are given to the living animals

A. hold on

B. stay on

C. take care of

D. save for

A. researchers

B. nitrates and nitrites

C. meats

D. colors

A. died out

B. wore off

C. went off

D. died out

A. As a result of scientific intervention, some potentially harmful substances have been added to our food

B. The scientists have preserved the color of meats, but not of vegetable

C. It caused a lack of information concerning the value of food

D. Because of science, disease caused by contaminated food has been virtually eradicated.

A. Federal Dairy Additives

B. Food and Drug Administration

C. Final Difficult Analysis

D. Food Direct Additives

A. muddy

B. punctual

C. studious

D. culture