.第一篇56. How do environmentalist opponents view GM foods according to the passage?A. They will eventually ruin agriculture and the environment. B. They are used by big businesses to monopolize agriculture. C. They have proved potentially harmful to consumers health. D. They pose a tremendous threat to current farming practice.57. What does the author say is vital to solving the controversy between the two sides of the debate?A. Breaking the GM food monopoly.
