Read the following passage and...

Câu hỏi: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions  

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