68. The tomato was shut out of the door of early Europeans mainly because ______.
A. it made Christians evil.
B. it was the apple of Eden
C. it came from a forbidden land
D. it was religiously unacceptable
69. What can we infer the underlined part in Paragraph 3 ?
A. The process of ignoring the tomato slowed down
B. There was little progress in the study of the tomato
C. The tomato was still refused in most western countries
D. Most western people continued to get rid of the tomato
70. What is the main reason for Robert Johnson to eat the tomato publicly?
A. To make himself a hero
B. To remove people's fear of the tomato
C. To speed up the popularity of the tomato
D. To persuade people to buy products from his factory
71. What is the main purpose of the passage ?
A. To challenge people's fixed concepts of the tomato
B. To give an explanation to people's dislike of the tomato
C. To present the change of people's attitudes to the tomato
D. To show the process of freeing the tomato from religious influence